Fujitsu ASTG30KMTC Service Manual
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Fujitsu ASTG30KMTC Service Manual

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AIR CONDITIONER
Wall mounted type
INDOOR
OUTDOOR
SERVICE MANUAL
ASTG30KMTC
ASTG34KMTC
AOTG30KMTC
AOTG34KMTC
SR_AS004EF_04
2020.05.12

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  • Page 1 AIR CONDITIONER Wall mounted type SERVICE MANUAL INDOOR ASTG30KMTC ASTG34KMTC OUTDOOR AOTG30KMTC AOTG34KMTC SR_AS004EF_04 2020.05.12...
  • Page 2 • Product specifications and design are subject to change without notice for future improvement. • For further details, please check with our authorized dealer. Trademarks The following term and logo are trademarks of Fujitsu General Limited in the United States, other countries or both: ™...
  • Page 3 CONTENTS 1. GENERAL INFORMATION 2. TECHNICAL DATA AND PARTS LIST 3. TROUBLESHOOTING 4. CONTROL AND FUNCTIONS 5. FILED WORKING...
  • Page 5 1. GENERAL INFORMATION 2019.06.27 SR_CH01_AS004EF_01...
  • Page 6 CONTENTS 1. GENERAL INFORMATION 1. Specifications....................01-1 1-1. Indoor unit ........................01-1 1-2. Outdoor unit........................01-2 2. Dimensions....................01-3 2-1. Indoor unit ........................01-3 2-2. Outdoor unit........................01-5...
  • Page 7 1. Specifications 1-1. Indoor unit Wall mounted Type Inverter heat pump Model name ASTG30KMTC ASTG34KMTC Power supply 240 V ~ 50 Hz Power supply intake Outdoor unit Available voltage range 198—264 V Cooling Star rating index 10-star standard Heating 8.50 9.40...
  • Page 8 1-2. Outdoor unit Type Inverter heat pump Model name AOTG30KMTC AOTG34KMTC Power supply 240 V ~ 50 Hz Available voltage range 198—264 V Starting current 10.7 11.2 Cooling 861 (3,100) 1,139 (4,100) Airflow rate l/s (m Heating 945 (3,400) 1,139 (4,100) Type ×...
  • Page 9 2. Dimensions 2-1. Indoor unit ¢ Models: ASTG30KMTC and ASTG34KMTC Unit: mm 1,150 1,150 Outline of unit - (01-3) - 2-1. Indoor unit 2. Dimensions...
  • Page 10  Installation space requirement Provide sufficient installation space for product safety. CAUTION Do not place any other electrical products or household belongings under the product. Conden- sation dripping from the product might get them wet, and may cause damage or malfunction to the property.
  • Page 11 2-2. Outdoor unit ¢ Model: AOTG30KMTC Unit: mm Top view Front view Side view Airflow Drain cap Drain pipe 4-Ø12 mm hole mounting places mounting place Bottom view - (01-5) - 2-2. Outdoor unit 2. Dimensions...
  • Page 12 ¢ Model: AOTG34KMTC Unit : mm Top view ø28: Cable port ø 28: Cable port ø28: Cable port ø28: Cable port Pipe port Pipe port Pipe port Front view Rear view Side view Airflow Pipe & cable port Drain cap Drain pipe Detail A mounting places...
  • Page 13 2. TECHNICAL DATA AND PARTS LIST 2020.05.12 SR_CH02_AS004EF_05...
  • Page 14 CONTENTS 2. TECHNICAL DATA AND PARTS LIST 1. Precautions....................02-1 2. Indoor unit parts list..................02-2 2-1. Models: ASTG30KMTC and ASTG34KMTC ..............02-2 3. Outdoor unit parts list.................02-4 3-1. Model: AOTG30KMTC ....................02-4 3-2. Model: AOTG34KMTC ....................02-7 4. Accessories ....................02-10 4-1. Indoor unit ........................02-10 4-2.
  • Page 15 • Service parts information and design are subject to change without notice for product improve- ment. • For the latest information of the service parts, refer to our Service Portal. https://fujitsu-general.force.com/portal/ • Precise figure of the service parts listed in this manual may differ from the actual service parts. - (02-1) -...
  • Page 16 2. Indoor unit parts list 2-1. Models: ASTG30KMTC and ASTG34KMTC ¢ Exterior parts Item no. Part no. Part name Service part 9386990004 Bracket panel ♦ 9387056006 Drain hose assy ♦ 9387063004 Link holder assy ♦ 9900139186 Step motor ♦ 9387062007 Gear cover assy ♦...
  • Page 17 9387064070 Evaporator total assy ♦ — Rear panel — — Box shield assy — — Control box — — PCB holder A — — Control cover — - (02-3) - 2-1. Models: ASTG30KMTC and ASTG34KMTC 2. Indoor unit parts list...
  • Page 18 3. Outdoor unit parts list 3-1. Model: AOTG30KMTC ¢ Exterior parts and chassis Item no. Part no. Part name Service part 9375381011 Protective net M ♦ 9374417032 Top panel sub assy ♦ 9375211011 Thermo holder ♦ 9374416240 Right panel sub assy ♦...
  • Page 19 ¢ Inverter Yellow White Blue Item no. Part no. Part name Service part 9900223014 Choke coil ♦ 9707592016 ACTPM ♦ 9709681220 Transistor PCB ♦ 9900514013 Heat exchanger thermistor ♦ 9900827021 Compressor thermistor ♦ 9900463007 Outdoor temp. thermistor ♦ 9901041020 Discharge thermistor ♦...
  • Page 20 ¢ Compressor Item no. Part no. Part name Service part 9374426133 Accumulator sub assy ♦ 9321644009 4-way valve assy ♦ 9900186012 Pressure switch ♦ 9970110122 Solenoid ♦ 9374470112 3-way valve sub assy ♦ 9970095030 Expansion valve coil ♦ 9321629006 Expansion valve assy ♦...
  • Page 21 3-2. Model: AOTG34KMTC ¢ Exterior parts and chassis Item no. Part no. Part name Service part 9379431002 Left panel ♦ 9379404006 Protective net (rear) ♦ 9379416047 Top panel sub assy ♦ 9374177011 Thermo holder ♦ 9379420013 Right panel sub assy ♦...
  • Page 22 ¢ Inverter Item no. Part no. Part name Service part 9900624019 Choke coil ♦ 9709682951 Transistor PCB ♦ 9707592016 ACTPM ♦ 9711371003 Filter PCB ♦ 9704265012 Thermistor ♦ 9900435028 Terminal ♦ 9709904589 Main PCB ♦ 9708678016 Display PCB ♦ 9709315057 Demand PCB ♦...
  • Page 23 ¢ Compressor Item no. Part no. Part name Service part 9970178023 Sensor ♦ 9374425495 4-way valve assy ♦ 9900186012 Pressure switch ♦ 9380032014 3-way valve assy ♦ 9374426232 Accumulator sub assy ♦ 9377973016 Special nut ♦ 9375347024 Sleeve A (comp) ♦...
  • Page 24 4. Accessories 4-1. Indoor unit ¢ Models: ASTG30KMTC and ASTG34KMTC Part name Exterior Q’ty Part name Exterior Q’ty Operating manual Drain hose insulation Installation manual Cloth tape Wall hook bracket Tapping screw (large) Remote controller Tapping screw (small) Battery Air cleaning filter...
  • Page 25 5. Optional parts 5-1. Indoor unit ¢ Controllers Exterior Part name Model name Summary Easy finger touch operation with LCD panel. Backlit LCD enables easy operation in a dark room. Wired remote UTY-RNRYZ* Wire type: Non-polar 2-wire controller Optional communication kit is necessary for installation.
  • Page 26 ¢ Others Exterior Part name Model name Summary Required when external device is External connected. UTY-XWZXZ5 connect kit Use to connect with external devices External input and air conditioner PCB. UTY-XCSXZ2 and output PCB Optional External connect kit is necessary for installation. Communication Use to connect Non-polar 2-core wired UTY-TWRXZ2...
  • Page 27 6. Refrigerant system diagrams 6-1. Model: AOTG30KMTC Heat exchanger 3-way 3-way (INDOOR) valve valve Pressure switch Strainer 4-way valve Expansion valve Accumulator Heat exchanger Strainer Pressure (OUTDOOR) check valve Cooling Heating : Thermistor (Discharge temperature) : Thermistor (Outdoor temperature) : Thermistor (Heat Exchanger Out temperature) : Thermistor (Compressor temperature) : Thermistor (Room temperature) : Thermistor (Pipe temperature)
  • Page 28 6-2. Model: AOTG34KMTC Heat exchanger 3-way 3-way (INDOOR) valve valve Pressure switch Muffler Muffler Pressure sensor Strainer 4-way valve Expansion valve Accumulator Heat exchanger Strainer Pressure (OUTDOOR) check valve Cooling Heating : Thermistor (Compressor temperature) : Thermistor (Discharge temperature) : Thermistor (Heat Exchanger Med temperature) : Thermistor (Heat Exchanger Out temperature) : Thermistor (Outdoor temperature) : Thermistor (Room temperature)
  • Page 29 7. Wiring diagrams 7-1. Indoor unit ¢ Models: ASTG30KMTC and ASTG34KMTC - (02-15) - 7-1. Indoor unit 7. Wiring diagrams...
  • Page 30 7-2. Outdoor unit ¢ Model: AOTG30KMTC - (02-16) - 7-2. Outdoor unit 7. Wiring diagrams...
  • Page 31 ¢ Model: AOTG34KMTC - (02-17) - 7-2. Outdoor unit 7. Wiring diagrams...
  • Page 32 8. PC board diagrams 8-1. Models: ASTG30KMTC and ASTG34KMTC CONTROL UNIT ASTG30KMTC : EZ-01838HSE ASTG34KMTC : EZ-01839HSE 2-WIRE REMOTE CONTROL UNIT ( OPTION ) UTY-TWRXZ2 UL1007 AWG22 CN300 REMOTE CN13 UL1007 AWG22 WHITE B03B-XNISK-A-1 CONTROLLER UL1061 AWG26 B07B-PASK-1 CN301 WHITE...
  • Page 33 8-2. Model: AOTG30KMTC INVERTER ASSEMBLY EZ-0170HUE EMI FILTER ZCAT2132-1130 1 TURN UL1015 AWG14 POWER SOURCE WHITE EMI FILTER AC240V UL1015 UL1015 ZCAT2132-1130 50Hz AWG14 250V AWG14 2 TURNS BLACK BLACK UL1015 UL3271 AWG14 TM101 AWG20 ORANGE UL1015 AWG20 EMI FILTER FILTER PCB WHITE ZCAT1518-0730...
  • Page 34 8-3. Model: AOTG34KMTC INVERTER ASSEMBLY EZ-01182FHUE TERMINAL JXO-SXC-6P-A-2 EMI FILTER GRFC-13 F103 F104 2 TURNS POWER SOURCE AC250V AC250V EMI FILTER UL1015 AC240V W100 3.15A ZCAT2132-1130 AWG12 50Hz BLACK 1 TURN UL1015 W101 AWG12 TM101 W102 UL1015 AWG12 ORANGE WHITE FILTER PCB INDOOR UNIT F100...
  • Page 35 3. TROUBLESHOOTING 2020.05.08 SR_CH03_AS004EF_02...
  • Page 36 CONTENTS 3. TROUBLESHOOTING 1. Error code ....................03-1 1-1. Error code table (Indoor unit and wired remote controller)..........03-1 1-2. Error code table (Outdoor unit: for 34 model only)............03-3 1-3. Error code table (Wireless LAN indicator)...............03-5 1-4. Error code table (Mobile app) ..................03-6 1-5.

  • Page 37: Table Of Contents

    CONTENTS (continued) 2-36. E: A5. Low pressure error (Outdoor unit)..............03-54 3. Troubleshooting without error code............03-56 3-1. Indoor unit—No power....................03-56 3-2. Outdoor unit—No power....................03-57 3-3. No operation (Power is on) ...................03-58 3-4. No cooling/No heating ....................03-59 3-5. Abnormal noise......................03-61 3-6. Water leaking........................03-62 4.
  • Page 39 1. Error code 1-1. Error code table (Indoor unit and wired remote controller) The operation, timer, and economy indicators operate according to the error contents. For confirmation of the error contents, refer the flashing pattern as follows. Indoor unit display Wired remote Error contents...
  • Page 40 Indoor unit display Wired remote Error contents Operation [ ] Timer [ ] Economy [ ] controller (Green) (Orange) (Green) display E: 74. Outdoor temperature thermistor error 7 times 4 times Continuous (Outdoor unit) E: 84. Current sensor error (Outdoor unit) 8 times 4 times Continuous...
  • Page 41 1-2. Error code table (Outdoor unit: for 34 model only) The operation status is determined by the lighting up and blinking of the LED lamp. After check that ERROR LED lamp blinks, press the ENTER button once. NOTE: For the positions of LED lamp and buttons, refer to "Function settings (For outdoor unit: AOTG34KMTC only)"...
  • Page 42 PUMP LOW NOISE PEAK CUT POWER/ DOWN Error contents ERROR MODE E: 95. Compressor motor control error ■ ● ■ ■ ○ ○ ○ ● (Outdoor unit) E: 97. Outdoor unit fan motor error ■ ● ■ ■ ○ ○ ●...
  • Page 43 1-3. Error code table (Wireless LAN indicator) • Wireless LAN control system diagram example Indoor unit Internet Controller PCB Cloud Wireless Parts: Mobile app Outdoor unit WLAN adapter (Smart device) router • Name of parts Wireless LAN adapter Wireless LAN label MAC: SSID: AP-WF PIN:...
  • Page 44 1-4. Error code table (Mobile app) • Error display If there is an abnormality on the air conditioning, refer to as follows. When the (error button) on the home screen is tapped, error code and error name is displayed. – For Android Error button Error code Error Name...
  • Page 45 • Error code Error message Error contents Error code 11.1 Serial communication error "E: 11. Serial communication error (Serial (Serial Reverse Transfer Error) reverse transfer error) (Outdoor unit)" 11.2 11.3 Serial communication error "E: 11. Serial communication error (Serial (Serial Forward Transfer Error) forward transfer error) (Indoor unit)"...
  • Page 46 1-5. Error message for wireless LAN control (Mobile app) • Error display If there is an abnormality on the wireless control system, refer to error messages as follows. The error message disappears after 5 seconds and the normal screen is displayed. For Android For iOS Error message...
  • Page 47 • Error message list – For Android Registration error Error message Cause Solution Wi-Fi must be enabled to set The user has disabled Wi-Fi Enable the Wi-Fi on the smart device. up new device on the smart device. We weren’t able to sign you The smart device and air Connect the mobile device to the same onto null.
  • Page 48 General error Error message Cause Solution No connectivity to Wi-Fi or The smart device has no Connect the mobile device to the internet. the cloud. Please check your internet access. network connection. An error occurred while trying to update your profile. Please try again later.
  • Page 49 Registration error Error message Cause Solution Could not register the device. The router the air conditioner Check if the router connected to the air Make sure the device is is connected to, has no conditioner has internet access. (You can ready for registration.
  • Page 50 2. Troubleshooting with error code 2-1. E: 11. Serial communication error (Serial reverse transfer error) (Outdoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 11 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 51 Check point 4. Check serial signal (Reverse transfer signal) Check serial signal (Reverse transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 90 V and AC 270 V at the outdoor unit terminal 1 —3.
  • Page 52 2-2. E: 11. Serial communication error (Serial forward transfer error) (Indoor unit) Operation indicator 1 time flash Timer indicator 1 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 11 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 53 Check point 4. Check serial signal (reverse transfer signal) Check serial signal (Forward transfer signal) GREEN WHITE BLACK WHITE BLACK • Check if indicated value swings between AC 30 V and AC 130 V at outdoor unit terminal 2—3. • If it is abnormal, replace main PCB.
  • Page 54 2-3. E: 12. Wired remote controller communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 2 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 12 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 55 2-4. E: 18. External communication error (Indoor unit) Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 18 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 56 2-5. E: 22. Indoor unit capacity error (Indoor unit) Operation indicator 2 time flash Timer indicator 2 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 22 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 57 2-6. E: 23. Combination error (Outdoor unit) Operation indicator 2 time flash Timer indicator 3 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 23 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 58 2-7. E: 26. Address setting error in wired remote controller (Indoor unit) Operation indicator 2 time flash Timer indicator 6 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 26 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 59 2-8. E: 29. Connected unit number error (Indoor unit) Operation indicator 2 time flash Timer indicator 9 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 29 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 60 2-9. E: 32. Indoor unit main PCB error (Indoor unit) Operation indicator 3 time flash Timer indicator 2 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 32 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 61 2-10. E: 33. Indoor unit motor electricity consumption detection error (Indoor unit) Operation indicator 3 time flash Timer indicator 3 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 33 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 62 2-11. E: 35. MANUAL AUTO button error (Indoor unit) Operation indicator 3 time flash Timer indicator 5 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 35 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 63 2-12. E: 39. Indoor unit power supply error for fan motor (Indoor unit) Operation indicator 3 time flash Timer indicator 9 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 39 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 64 2-13. E: 3A. Indoor unit communication circuit error (Indoor unit) Operation indicator 3 time flash Timer indicator 10 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 3A Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 65 2-14. E: 41. Room temperature sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 1 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 41 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 66 2-15. E: 42. Indoor unit heat exchanger sensor error (Indoor unit) Operation indicator 4 time flash Timer indicator 2 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 42 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 67 2-16. E: 51. Indoor unit fan motor error (Indoor unit) Operation indicator 5 time flash Timer indicator 1 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 51 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 68 2-17. E: 5U. Indoor unit error Operation indicator 5 time flash Timer indicator 15 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 5U Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)” on page 1 Check point.
  • Page 69 2-18. E: 62. Outdoor unit main PCB error (Outdoor unit) Operation indicator 6 time flash Timer indicator 2 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 62 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 70 2-19. E: 63. Inverter error (Outdoor unit) Operation indicator 6 time flash Timer indicator 3 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 63 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 71 2-20. E: 64. Active filter voltage error (Outdoor unit) Operation indicator 6 time flash Timer indicator 4 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 64 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 72 2-21. E: 64. PFC circuit error (Outdoor unit) Operation indicator 6 time flash Timer indicator 4 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 64 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 73 2-22. E: 65. IPM error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 65 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 74 Check point 4. Check compressor Check compressor. (Refer to inverter compressor in "Service parts information".) ↓ Check point 5. Check transistor PCB Check transistor PCB. (Refer to transistor PCB in "Service parts information" on page 03-75.) ↓ Check point 6. Replace main PCB If Check point 1 to 5 do not improve the symptom, change main PCB.
  • Page 75 2-23. E: 65. Trip terminal L error (Outdoor unit) Operation indicator 6 time flash Timer indicator 5 time flash Indoor unit Indicator Economy indicator Continuous flash Error code E: 65 outdoor unit No indicated Main PCB When the signal from FO terminal of IPM is “L” (0 V) Detective actuator Outdoor unit during the compressor stopping.
  • Page 76 2-24. E: 71. Discharge thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 1 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 71 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 77 2-25. E: 72. Compressor thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 2 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 72 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 78 2-26. E: 73. Outdoor unit heat exchanger thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 3 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 73 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 79 2-27. E: 74. Outdoor temperature thermistor error (Outdoor unit) Operation indicator 7 time flash Timer indicator 4 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 74 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 80 2-28. E: 84. Current sensor error (Outdoor unit) Operation indicator 8 time flash Timer indicator 4 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 84 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 81 2-29. E: 86. High pressure switch error (Outdoor unit) Operation indicator 8 time flash Timer indicator 6 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 86 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 82 2-30. E: 94. Over current error (Outdoor unit) Operation indicator 9 time flash Timer indicator 4 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 94 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 83 2-31. E: 95. Compressor motor control error (Outdoor unit) Operation indicator 9 time flash Timer indicator 5 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 95 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 84 2-32. E: 97. Outdoor unit fan motor error (Outdoor unit) Operation indicator 9 time flash Timer indicator 7 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 97 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 85 Check point 4. Check output voltage of main PCB Check outdoor unit circuit diagram and the voltage. (Measure at main PCB side con- nector) FAN MOTOR BLACK WHITE YELLOW BROWN NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2.
  • Page 86 2-33. E: 99. 4-way valve error (Outdoor unit) Operation indicator 9 time flash Timer indicator 9 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 99 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 87 Check point 4. Check the solenoid coil and 4-way valve • Solenoid coil Remove CN30 from PCB and check the resistance value of coil. Resistance value is 2.085 kΩ (at 20°C). → If it is open or abnormal resistance value, replace solenoid coil. •...
  • Page 88 2-34. E: A1. Discharge temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 1 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: A1 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 89 Check point 5. Check the refrigerant amount Check the refrigerant leakage. ↓ Check point 6. Replace main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. ↓ - (03-51) - 2-34. E: A1. Discharge temperature error (Outdoor unit) 2.
  • Page 90 2-35. E: A3. Compressor temperature error (Outdoor unit) Operation indicator 10 time flash Timer indicator 3 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: A3 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 91 Check point 5. Check the refrigerant amount Check the refrigerant leakage. ↓ Check point 6. Replace main PCB If check point 1 to 5 do not improve the symptom, replace the main PCB. ↓ - (03-53) - 2-35. E: A3. Compressor temperature error (Outdoor unit) 2.

  • Page 92: E: A5. Low Pressure Error (Outdoor Unit)

    2-36. E: A5. Low pressure error (Outdoor unit) Operation indicator 10 time flash Timer indicator 5 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: A5 Refer to “Error code table (Outdoor unit: for 34 model outdoor unit only)”...
  • Page 93 Check point 6. Check the refrigerant amount Check the refrigerant leakage. ↓ Check point 7. Replace main PCB If check point 1 to 6 do not improve the symptom, replace the main PCB. ↓ - (03-55) - 2-36. E: A5. Low pressure error (Outdoor unit) 2.

  • Page 94: Troubleshooting Without Error Code

    3. Troubleshooting without error code 3-1. Indoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Isn’t the breaker down? • Check loose or removed connection cable. -> If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”.

  • Page 95: Outdoor Unit-No Power

    3-2. Outdoor unit—No power Power supply failure Forecast of cause External cause Electrical components defective Check point 1. Check installation condition • Isn’t the breaker down? • Check loose or removed connection cable. → If abnormal condition is found, correct it by referring to the installation manual or the “DESIGN & TECHNICAL MANUAL”.

  • Page 96: No Operation (Power Is On)

    3-3. No operation (Power is on) Setting/ Connection failure Forecast of cause External cause Electrical components defective Check point 1. Check indoor and outdoor installation condition • Indoor unit: – Check incorrect wiring between indoor unit and remote controller. – Check if there is an open cable connection.

  • Page 97: No Cooling/No Heating

    3-4. No cooling/No heating Indoor unit error Outdoor unit error Forecast of cause Effect by surrounding environment Connection pipe/Connection wire failure Refrigeration cycle failure Check point 1. Check Indoor unit • Does Indoor unit fan run in the HIGH mode? •...
  • Page 98 NOTES: • Strainer normally does not have temperature difference between inlet and outlet as shown be- low. Pipe (In) Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, re- place the strainer.

  • Page 99: Abnormal Noise

    3-5. Abnormal noise Abnormal installation (indoor unit/outdoor unit) Forecast of cause Fan failure (indoor unit/outdoor unit) Compressor failure (outdoor) Diagnosis method when abnormal noise is occurred Abnormal noise is coming from Indoor unit. Abnormal noise is coming from Indoor unit. (Check and correct followings) (Check and correct followings) ↓...

  • Page 100: Water Leaking

    3-6. Water leaking Erroneous installation Forecast of cause Drain hose failure Diagnosis method when water is spitting Diagnosis method when water leak occurs • Is main unit installed in stable condi- tion? Is the filter clogged? • Is main unit broken or deformed at the time of transportation or maintenance? ↓...

  • Page 101: Troubleshooting With Error Code (For Wireless Lan Adapter)

    4. Troubleshooting with error code (For wireless LAN adapter) 4-1. E: 18. External communication error between indoor unit and WLAN adapter Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 18 LED1 (green) Flashing fast...

  • Page 102: Wireless Lan Adapter Error

    4-2. Wireless LAN adapter error Operation indicator No indication Timer indicator No indication Indoor unit Economy indicator No indication Indicator Error code — LED1 (green) Flashing fast Wireless LAN adapter LED2 (orange) Flashing fast Wireless LAN adapter setting When the setting button becomes on for consecutive 60 button seconds or more.

  • Page 103: Network Communication Error Between Wireless Lan Router And Wlan Adapter

    4-3. Network communication error between wireless LAN router and WLAN adapter Operation indicator No indication Timer indicator No indication Indoor unit Economy indicator No indication Indicator Error code — LED1 (green) Wireless LAN adapter LED2 (orange) Flashing fast Wireless LAN router When the not connection between wireless LAN adapter and wireless LAN router.
  • Page 104 Check point 4. Replace wireless LAN adapter. If check point 3 do not improve the symptom, replace the wireless LAN adapter and cancel the reg- istration of air conditioner on the mobile app. After replacing the adapter, perform the pairing on the mobile app. For the method of the mobile app, refer to "Mobile app setting method"...

  • Page 105: E: 18. Communication Error

    4-4. E: 18. Communication error Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 18 LED1 (green) Flashing fast Wireless LAN adapter LED2 (orange) Flashing fast Wireless LAN router When the external communication error between indoor unit and WLAN adapter and network communication Wireless LAN adapter PCB...
  • Page 106 Check point 3-1. Turn on the power again of air conditioner. If check point 1 to 2 do not improve the symptom, turn on the power of the air conditioner again and wait for 60 seconds. -> When the flashing pattern of the LED 2 (orange) is on, go to "Check point 3-2".

  • Page 107: E: 18. Wireless Lan Adapter Non-Energized

    4-5. E: 18. Wireless LAN adapter non-energized Operation indicator 1 time flash Timer indicator 8 time flash Indoor unit Economy indicator Continuous flash Indicator Error code E: 18 LED1 (green) Wireless LAN adapter LED2 (orange) Indoor unit controller PCB When the voltage (DC 12 V) does not output from the Detective actuator controller PCB.

  • Page 108: Mobile App Setting Method

    4-6. Mobile app setting method ¢ Air conditioner deregistration method When the wireless LAN adapter is replaced, deregistration of all air conditioner is necessary on the mobile app. Launch the mobile app. FGL air Press and hold the registered device name of the air conditioner. If the Unregister button is displayed, tap the button.
  • Page 109 ¢ Air conditioner registration pairing method Choose the following modes to connect the air conditioner to the wireless LAN router. NOTES: • Before starting this setting, wait for 60 seconds or more after the power supply is connected to the air conditioner (via breaker or plug). •...
  • Page 110 Confirm LED 2 is flashing (On/Off at 2 seconds intervals). Then press and hold the setting but- ton on the wireless LAN adapter for 3 seconds. on/off: 2 sec/2 sec on/off: 2 sec/0.5 sec LED 2 lighting will change. (On/Off: 2 sec./2 sec. → 2 sec./0.5 sec.) Confirm both of the LED 1 and 2 are on to proceed.
  • Page 111  Manual mode (For Android) Launch the mobile app. FGL air Sign in with your E-mail address and password following the screen on the mobile app. john@fgl.com Sign in Press the + button to add a new air conditioner. Select manual mode. Button mode Manual mode If both of the LED 1 and 2 are off, push the setting button once.
  • Page 112  Manual mode (For iOS) Launch the mobile app. FGL air Sign in with your E-mail address and password following the screen on the mobile app. john@fgl.com Sign in Press the + button to add a new air conditioner. Select manual mode. Button mode Manual mode If both of the LED 1 and 2 are off, push the setting button once.

  • Page 113: Service Parts Information

    5. Service parts information 5-1. Compressor Diagnosis method of compressor (If outdoor unit LED displays error, refer to troubleshooting) Does not start up Stops soon after starting up Abnormal noise ↓ ↓ ↓ Check if vibration noise by Is there open or loose con- Is there open or loose con- loose bolt or contact noise of nection cable?

  • Page 114: Inverter Compressor

    5-2. Inverter compressor Check point 1. Check connection Check connection of transistor PCB. Check terminal connection of compres- (loose or incorrect wiring) sor. (loose or incorrect wiring) W (C) (T) Transistor PCB (IPM) V (S) (Black) (White) TM305 TM304 TM303 Transistor PCB (IPM) Black White...

  • Page 115: Outdoor Unit Electronic Expansion Valve (Eev)

    5-3. Outdoor unit Electronic Expansion Valve (EEV) Check point 1. Check connections Check connection of connector. (Loose connector or open cable) NOTE: For details of wiring diagram, refer to "Wiring diagrams" in Chapter 2. TECHNICAL DATA AND PARTS LIST on page 02-15. Check point 2.
  • Page 116 Check point 6. Check strainer • Strainer normally does not have temperature difference between inlet and outlet as shown be- low. Pipe (In) Pipe (Out) • If there is a difference like shown below, there is a possibility of inside clogged. In this case, replace the strainer.

  • Page 117: Indoor Unit Fan Motor

    5-4. Indoor unit fan motor Check point 1. Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) → If fan or bearing is abnormal, replace it. Check point 2.

  • Page 118: Outdoor Unit Fan Motor

    5-5. Outdoor unit fan motor Check point 1. Check rotation of fan Rotate the fan by hand when operation is off. (Check if fan is caught, dropped off or locked motor) → If Fan or Bearing is abnormal, replace it. Check point 2.

  • Page 119: Active Filter Module

    5-6. Active filter module Check point 1. Check open or short circuit and diode (D1) Remove connector, check the open or short-circuit and the diode in the module. Check the open or short-circuit. LOT No. of PM-601 [FGEL] type Label position (+IN)* ( -IN)* (N)*...
  • Page 120 Table 2. Standard value is changed by the tool specification (Type A and B are same value) Terminal Multimeter Resistance value 1.32 MΩ/0.66 MΩ  (Ref. value 1/Ref. value 2) 1.01 MΩ/0.76 MΩ  (Ref. value 1/Ref. value 2) : By kind of multimeter, the value may change significantly. Specifications of Ref.

  • Page 121: Ipm On Transistor Pcb

    5-7. IPM on transistor PCB Check point 1 Disconnect the connection wires between the transistor PCB—capacitor PCB and transistor PCB—inverter PCB. Set the tester to the resistance mode, and measure the resistance between the following termi- nals. TM301 (P)—TM305 (U)/TM304 (V)/TM303 (W) TM302 (N)—TM305 (U)/TM304 (V)/TM303 (W) Judge the result of 2 as follows: Terminal...
  • Page 122 Check point 2 Set tester to the diode mode, and measure the voltage value between the following terminals. Judge the result of 4 as follows: Terminal Tester Tester screen ∞ 0.3 to 0.7 V ∞ - (03-84) - 5-7. IPM on transistor PCB 5.

  • Page 123: Suction Pressure Sensor

    5-8. Suction pressure sensor Check point 1. Check voltage from main PCB With the connector connected to the PCB, measure the voltage between CN91 (terminal3—4) of the main PCB CN91 White Black Pressure sensor Characteristics of pressure sensor Pressure (MPa) - (03-85) - 5-8.

  • Page 124: Thermistor Resistance Values

    6. Thermistor resistance values 6-1. Indoor unit ¢ Room temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -10.0 58.25 0.73 -5.0 44.03 0.93 33.62 1.15 25.92 1.39 10.0 20.17 1.66 15.0 15.84 1.94 20.0 12.54 2.22 25.0 10.00 2.50 30.0 8.04 2.77 35.0...

  • Page 125: Outdoor Unit

    6-2. Outdoor unit ¢ Discharge temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 1,013.11 0.06 -25.0 729.09 0.09 -20.0 531.56 0.12 -15.0 392.31 0.16 -10.0 292.91 0.21 -5.0 221.09 0.28 168.60 0.36 129.84 0.46 10.0 100.91 0.57 15.0 79.12 0.71 20.0 62.55...
  • Page 126 ¢ Compressor temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 1,013.11 0.06 -25.0 729.09 0.09 -20.0 531.56 0.12 -15.0 392.31 0.16 -10.0 292.91 0.21 -5.0 221.09 0.28 168.60 0.36 129.84 0.46 10.0 100.91 0.57 15.0 79.12 0.71 20.0 62.55 0.86 25.0 49.84...
  • Page 127 ¢ Heat exchanger temperature thermistor Temperature (°C) Resistance (kΩ) Voltage (V) -30.0 92.31 0.24 -25.0 66.97 0.33 -20.0 49.20 0.44 -15.0 36.58 0.57 -10.0 27.51 0.74 -5.0 20.91 0.93 16.05 1.14 12.44 1.38 10.0 9.73 1.64 15.0 7.67 1.91 20.0 6.10 2.19 25.0...
  • Page 128 - (03-90) - 6-2. Outdoor unit 6. Thermistor resistance values...
  • Page 129 4. CONTROL AND FUNCTIONS 2020.05.08 SR_CH04_AS004EF_02...
  • Page 130 CONTENTS 4. CONTROL AND FUNCTIONS 1. Compressor frequency control..............04-1 1-1. Cooling operation ......................04-1 1-2. Heating operation ......................04-2 1-3. Dry operation ........................04-3 1-4. Compressor frequency at normal start-up ..............04-3 2. Auto changeover operation................04-6 3. Fan control....................04-8 3-1. Indoor fan control......................04-8 3-2. Outdoor fan control.......................04-11 4.
  • Page 131 CONTENTS (continued) 8-7. Low outdoor temperature protection................04-28 8-8. High temperature and high pressure release control (heating mode) ......04-29...

  • Page 133: Compressor Frequency Control

    • Compressor frequency range Model name Minimum frequency Maximum frequency ASTG30KMTC 14 rps 65 rps ASTG34KMTC 16 rps 77 rps •...

  • Page 134: Heating Operation

    • When the room temperature is within the range of +1.0°C to -6.0°C of the setting temperature, the compressor frequency is controlled within the range shown below. • Compressor frequency range Unit: rps Model name Minimum frequency Maximum frequency ASTG30KMTC ASTG34KMTC - (04-2) - 1-2. Heating operation 1. Compressor frequency control...

  • Page 135: Dry Operation

    Zone is defined by set temperature and room temperature. • Compressor frequency range Unit: rps Model name Outdoor temperature zone Operating frequency X zone ASTG30KMTC Y zone Z zone X zone ASTG34KMTC Y zone Z zone • Compressor control based on room temperature...
  • Page 136 • Special operation Frequency (rps) Time (sec) NOTES: • Normal operation: – Cooling and dry mode • Below 3 hours from the compressor stop and the compressor thermistor ≥ 32 °C in heating mode • After defrost operation – Other than when the compressor starts for the first time since the breaker turns on •...
  • Page 137 ¢ Model: AOTG34KMTC Compressor frequency soon after starting is controlled as below. Frequency IV Frequency III Frequency II Frequency I Time 4 Time 1 Time 2 Time 3 Condition Operation Compressor stop Compressor temp. Outdoor temp. Control pattern mode time Cooling —...

  • Page 138: Auto Changeover Operation

    2. Auto changeover operation When the air conditioner is set to AUTO mode by remote controller, operation starts in the optimum mode from among heating, cooling, dry and monitoring modes. During operation, the optimum mode is automatically switched in accordance with temperature changes. The temperature can be set be- tween 18°C and 30°C in 1.0°C steps.
  • Page 139 Operation flow chart Start Ts: Setting temperarure Monitor mode Room temp. > Ts+2°C? Room temp. < Ts-2°C? Middle zone Auto change over is second or more? Operation mode before the monitor mode is cooling mode? Operation mode of Heating operation Cooling operation outdoor unit: Cooling? Thermostat remains...

  • Page 140: Fan Control

    3. Fan control Tr: Room temperature Ts: Setting temperature 3-1. Indoor fan control ¢ Fan speed Indoor fan speed is defined as below. Speed (rpm) Operation mode Fan mode ASTG30KMTC ASTG34KMTC POWERFUL 1,520 1,520 HIGH 1,370 1,370 MED+ 1,260 1,260...
  • Page 141 ¢ Dry operation During dry operation, fan speed setting can not be changed as shown in “Fan speed” above. ¢ Heating operation Switch the airflow AUTO, and the indoor fan motor will run according to a room temperature, as be- low.
  • Page 142 • Powerful operation Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 42°C 37°C HIGH 39°C 34°C 37°C 32°C Cool air prevention 30°C 28°C S-LOW 7 minutes later: Indoor heat exchanger temperature rises Indoor heat exchanger POWERFUL temperature drops 42°C 37°C HIGH...

  • Page 143: Outdoor Fan Control

    3-2. Outdoor fan control ¢ Outdoor fan motor This outdoor unit has a DC fan motor. (Control method is different between AC and DC motors.) ¢ Fan speed  Model: AOTG30KMTC Fan speed is defined by outdoor temperature and compressor frequency. •...
  • Page 144  Model: AOTG34KMTC Fan speed is defined by outdoor temperature and compressor frequency. Unit: rpm Cooling or dry Heating — — • When the compressor frequency increases, the outdoor fan speed also changes to the higher speed. • When the compressor frequency decreases, the outdoor fan speed also changes to the lower speed.

  • Page 145: Louver Control

    4. Louver control 4-1. Vertical airflow direction louver control Each time the button is pressed, the air direction range will change as below: Side view • Remote controller display is not changed. • Vertical airflow direction is set automatically as shown, in accordance with the type of operation selected.

  • Page 146: Swing Operation

    4-3. Swing operation • To select vertical airflow swing operation When the swing signal is received, the vertical airflow direction louver starts to swing. – Swinging range • Cooling mode/dry mode/fan mode (1 to 3): 1 ↔ 4 • Heating mode/fan mode (4 to 6): 3 ↔ 6 –...

  • Page 147: Timer Operation Control

    5. Timer operation control 5-1. Wireless remote control On/Off timer Program timer Sleep timer Weekly timer ○ ○ ○ ○ ¢ On/Off timer • Off timer: When the clock reaches the set timer, the air conditioner will be turned off. Operation mode Stop mode Set time of timer...
  • Page 148 ¢ Sleep timer If the sleep timer is set, the room temperature is monitored and the operation is stopped auto- matically. If the operation mode or the set temperature is change after the sleep timer is set, the operation is continued according to the changed setting of the sleep timer from that time on. •...

  • Page 149: Defrost Operation Control

    6. Defrost operation control Tn: Outdoor unit heat exchanger temperature Ta: Outdoor temperature Tn10: Temperature at 10 minutes after compressor start Tnb: Temperature before 5 minutes Triggering condition • The defrost operation starts when outdoor unit heat exchanger temperature sensor detects the temperature lower than the values shown below.
  • Page 150 Flowchart • The defrost proceed by integrating operation time, outdoor temperature, and outdoor heat ex- changer temperature as follows. Heating operation start : Compressor ON (Not defrosted for 10 minutes) 1st defrost 2nd and later defrost Integrating defrost (Constant monitoring) Compressor Compressor Compressor...

  • Page 151: Defrost Operation In Heating Operation Stopped

    6-1. Defrost operation in heating operation stopped If the outdoor unit is frosted when stopping the heating operation, it stops after performing the auto- matic defrosting operation. In this time, if the indoor unit operation lamp flashes slowly (6 sec on/2 sec off), the outdoor unit al- low the heat exchanger to defrost, and then stop.

  • Page 152: Various Control

    7. Various control 7-1. Auto restart When the power was interrupted by a power failure etc. during operation, the operation contents at that time are memorized and when the power is recovered, operation is automatically started with the memorized operation contents. Operation contents memorized when the power is interrupted Operation mode Setting temperature...

  • Page 153: Forced Cooling Operation

    7-4. Forced cooling operation When FORCED COOLING OPERATION button is pressed more than 10 seconds, forced cooling operation starts as shown in the table below. Operation mode Cooling Fan mode HIGH Timer mode Continuous (no timer setting available) Setting temperature 24°C Vertical airflow direction louver setting Standard...

  • Page 154: Compressor Preheating

    7-8. Compressor preheating By preheating the compressor, warm airflow is quickly discharged when the operation is started. • Triggering condition 1 – Outdoor temperature ≤ 20°C When outdoor temperature reaches following degrees, compressor preheating stops. 30 model 25°C 34 model 26°C –...

  • Page 155: 4-Way Valve Control

    7-11. 4-way valve control • If heating mode is selected at the compressor start, 4-way valve is energized for heating. • When the air conditioner is switched between cooling and heating mode, compressor is stopped, and the 4-way valve is switched when the 3 minutes passes and the compressor is started. 4-way valve switching Heating mode...

  • Page 156: Human Sensor For Energy Saving

    7-13. Human sensor for energy saving If no one enters the room for approximately 20 minutes, the set temperature is automatically con- trolled. (When someone comes back into the room, the human sensor detect this, and automatically revert to the original settings.) Operation details Operation mode (If there is no one in the room for a while)

  • Page 157: Peak Cut Operation (For 34 Model)

    7-14. Peak cut operation (for 34 model) The current value is limited to reduce the power consumption by external input. Peak cut level Level 1 Level 2 Level 3 Level 4 Forced thermostat Peak cut for rated capacity 100% NOTES: •...

  • Page 158: Various Protections

    8. Various protections 8-1. Discharge gas temperature over-rise prevention control The discharge gas temperature sensor (discharge thermistor: outdoor unit side) detects the dis- charge gas temperature. • When the discharge temperature becomes higher than the trigger condition, the compressor fre- quency is decreased as the table below, and it continues to decrease until the discharge tempera- ture becomes lower than the trigger condition.

  • Page 159: Cooling Pressure Over-Rise Protection

    ¢ Model: AOTG34KMTC Unit: A • Cooling Outdoor unit fan speed (rpm) Outdoor temp. (Ta) 50°C ≤ Ta 12.5/12.0 6.5/6.0 5.0/4.5 46°C ≤ Ta < 50°C 13.5/13.0 9.0/8.5 40°C ≤ Ta < 46°C 16.5/16.0 10.0/9.5 9.0/ 8.5 13.5 38°C ≤ Ta < 40°C /13.0 17.5 10.0...

  • Page 160: Compressor Temperature Protection

    8-5. Compressor temperature protection When the compressor temperature sensor detects higher than the trigger condition below, the com- pressor is stopped. When the compressor temperature sensor detects the release condition, the pro- tection is released. Trigger condition 108°C 80°C Release condition (3 minutes after compressor stop) 8-6.
  • Page 161 8-8. High temperature and high pressure release control (heating mode) In heating mode, the compressor is controlled as follows. ¢ Model: AOTG30KMTC Indoor unit heat exchanger Indoor unit heat exchanger temperature rises temperature drops 63°C Zone A 55°C 53°C Zone B 50°C Zone C Zone D...
  • Page 162 - (04-30) - 8-8. High temperature and high pressure release control (heating mode) 8. Various protections...
  • Page 163 5. FILED WORKING 2019.07.24 SR_CH05_AS004EF_01...
  • Page 164 CONTENTS 5. FILED WORKING 1. Function settings (For indoor unit)............05-1 1-1. Function settings by using remote controller ..............05-1 1-2. Custom code setting for wireless remote controller ............05-9 2. Function settings (For outdoor unit: AOTG34KMTC only) ....05-10 2-1. Local setting switch buttons..................05-10 2-2.

  • Page 165: Function Settings (For Indoor Unit)

    1. Function settings (For indoor unit) To adjust the functions of this product according to the installation environment, various types of function settings are available. NOTE: Incorrect settings can cause a product malfunction. 1-1. Function settings by using remote controller Some function settings can be changed on the remote controller.
  • Page 166 NOTES: • The air conditioner custom code is set to prior to shipment. • If you do not know the air conditioner custom code setting, try each of the custom codes ( → → → ) until you find the code that operates the air conditioner. ¢...
  • Page 167 1) Remote controller address setting NOTE: Because this setting is normally done automatically when 2-wire-type wired remote con- troller is installed, setting is unnecessary. Multiple indoor units can be operated by using one wired remote controller. Set the unit number of each indoor unit. Function number Setting value Setting description...
  • Page 168 3) Room temperature control for indoor unit sensor Depending on the installed environment, correction of the room temperature sensor may be re- quired. Select the appropriate control setting according to the installed environment. The temperature of the room temperature sensor is corrected as follows: Corrected temp.
  • Page 169 4) Room temperature control for wired remote controller sensor Depending on the installed environment, correction of the wire remote temperature sensor may be required. Select the appropriate control setting according to the installed environment. To change this setting, set Function 42 to Both “01”. Ensure that the Thermo Sensor icon is displayed on the remote controller screen.
  • Page 170 7) Remote controller custom code (Only for wireless remote controller) The indoor unit custom code can be changed. Select the appropriate custom code. Function number Setting value Setting description Factory setting ♦ 8) External input control "Operation/Stop" mode or "Forced stop" mode can be selected. Function number Setting value Setting description...
  • Page 171 11) Control switching of external heaters Sets the control method for external heater to be used. For details, refer to Chapter 3-4. "Details of function" on page 05-20 Function Factory Setting value Setting description number setting Auxiliary heater control 1 ♦...
  • Page 172 14) Outdoor temperature zone boundary temperature B Setting required if changing of the outdoor temperature setting for heat pump only zone is required when auxiliary heater control by outdoor temperature 1 is performed on the indoor unit. For details, refer to Chapter 3-4.

  • Page 173: Custom Code Setting For Wireless Remote Controller

    1-2. Custom code setting for wireless remote controller To interconnect the air conditioner and the wireless remote controller, assignment of the custom code for the wireless remote controller is required. NOTE: Air conditioner cannot receive a signal if the air conditioner has not been set for the custom code.

  • Page 174: Function Settings (For Outdoor Unit: Aotg34Kmtc Only)

    2. Function settings (For outdoor unit: AOTG34KMTC only) Perform appropriate function setting locally according to the installation environment. NOTE: Incorrect settings can cause a product malfunction. CAUTION • Before setting up the switch buttons, discharge the static electricity from your body. •...
  • Page 175 ¢ Switch buttons and the functions LED lamps Switch buttons LED lamp Function or operation method Lights on while power on. (1) POWER/MODE Green Local setting in outdoor unit or error code is displayed with blink. (2) ERROR Blinks during error operation. (3) PUMP DOWN (L1) Orange Lights on during pump down operation.

  • Page 176: Local Setting Procedure

    2-2. Local setting procedure NOTE: Before performing the function setting, be sure to stop the operation of the air conditioner. ¢ Low noise mode LED lamps Switch buttons Press the MODE switch button (SW1) for 3 seconds or more to switch to “Local setting mode”. After confirming the LED lamp of POWER/MODE blinks 9 times, press the ENTER switch but- ton (SW3).
  • Page 177 Press the ENTER switch button (SW3) and fix it. PEAK CUT (L4) (L5) (L6) MODE 1: Low MODE 2: Lower To return to “Operating status display (Normal operation)”, press the EXIT switch button (SW4). In case of missing how many times you pressed the SELECT and ENTER switch buttons: 1.
  • Page 178 ¢ Peak cut mode LED lamps Switch buttons Press the MODE switch button (SW1) for 3 seconds or more to switch to “Local setting mode”. After confirming the LED lamp of POWER/MODE blinks 9 times, press the ENTER switch but- ton (SW3).
  • Page 179 Press the ENTER switch button (SW3) and fix it. PEAK CUT (L4) (L5) (L6) 0 % of rated input ratio 50 % of rated input ratio 75 % of rated input ratio 100 % of rated input ratio To return to “Operating status display (Normal operation)”, press the EXIT switch button (SW4). NOTE: When pressed number is lost during setting, you must redo the setting procedure.

  • Page 180: External Input And Output (For Indoor Unit)

    3. External input and output (For indoor unit) External input and output PCB SW301 SW302 Rotary switch CN314 CN313 CN312 CN311 CN310 CN308 To CN6 on Indoor unit PCB External input External output Connector Input select Input signal Operation/Stop CN313/ Edge/Pulse Dry contact/ CN314...

  • Page 181: External Input

    3-1. External input With using external input function, some functions on this product can be controlled from an external device. • “Operation/Stop” mode or "Forced stop" mode can be selected with function setting of indoor unit. • A twisted pair cable should be used. Maximum length of cable is 150 m. •...

  • Page 182: External Output

    3-2. External output Use an external output cable with appropriate external dimension, depending on the number of ca- bles to be installed. ¢ External input and output PCB • A twisted pair cable (22AWG) should be used. Maximum length of cable is 25 m. •...

  • Page 183: Combination Of External Input And Output

    3-3. Combination of external input and output By combining the function setting of the indoor unit and rotary switch setting of the External input and output PCB, you can select various combinations of functions. Combination examples of external input and output are as follows: External input External input Mode...

  • Page 184: Details Of Function

    3-4. Details of function ¢ Control input function • When function setting is “Operation/Stop” mode 1 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting input and output PCB Off → On Operation External input and 46-00...
  • Page 185 • When function setting is “Forced stop” mode – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting input and output PCB Off → On Forced stop External input and 46-02 CN313 output PCB On →...
  • Page 186 • When function setting is “Operation/Stop” mode 2 – In the case of “Edge” input: Function Rotary SW on External External input Input signal Command setting input and output PCB Off → On Operation External input and 46-03 CN313 Stop (R.C. output PCB On →...
  • Page 187 • Forced thermostat off function Rotary SW on External External input Input signal Command input and output PCB Off → On Thermostat off External input and output PCB CN313 On → Off Normal operation Input Compressor Room temp. Set temp. - (05-23) - 3-4.
  • Page 188 ¢ Control output function • Operation/Stop status Rotary SW on External Output External output Command input and output PCB signal Off → On Operation External input and output PCB CN310 On → Off Stop The output is low when the unit is stopped. Operation Indoor unit Stop...
  • Page 189 • Design and install external heater appropriately with considering its protection. • Inappropriate designing and installation of external heater may cause a fire by emitted heat from the external heater. • Fujitsu General Ltd. is not responsible for inappropriate designing or installation of external heating device. - (05-25) - 3-4.
  • Page 190  Auxiliary heater control 1 Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. • Other than heating mode Heater off • Error occurred •...
  • Page 191  Heat pump prohibition control Perform heating by external heater only. Indoor unit is continuous thermostat off. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature. • Heater is off as shown in following diagram of heating temperature. •...
  • Page 192  Auxiliary heater control by outdoor temperature 1 This control selects heat pump or external heater according to the outdoor temperature. When out- door temperature is high, the heating is performed by using heat pump only. Operation Condition Heater on Heater is on as shown in following diagram of heating temperature.
  • Page 193 • Operation status 8°C 6°C Outdoor temperature (Factory setting) -18°C -20°C Heat pump Heat pump Combination zone prohibition only zone Outdoor temperature zone * zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.
  • Page 194  Auxiliary heater control by outdoor temperature 2 This control selects heat pump or external heater according to the outdoor temperature. Even when outdoor temperature is high, the heating is performed by using both of heat pump and external heater. Operation Condition Heater on...
  • Page 195 • Operation status 8°C 6°C Outdoor temperature (Factory setting) -18°C -20°C Heat pump Combination zone Outdoor temperature zone * prohibition zone Comp. On/Off 12 V Heater * The outdoor temperature zone transition from one to another will stay in that zone for minimum of 30 min. NOTE: In following operations, compressor will be on in heat pump prohibition zone.

  • Page 196: External Input And Output (For Outdoor Unit: Aotg34Kmtc Only)

    4. External input and output (For outdoor unit: AOTG34KMTC only) With using external input and output functions, this product can be operated inter-connectedly with an external device. Connector Input Output Remarks CN10 Low noise mode — CN11 Peak cut mode —...
  • Page 197 ¢ Peak cut mode By performing following on-site work, operation that suppresses the current value can be enabled: The air conditioner is set to the “Peak cut mode” when closing the contact input of a commercial timer or on/off switch to a connector on the control PCB of the outdoor unit. •...

  • Page 198: External Output

    4-2. External output With using external output function, some status signals are transmitted to the control PCB, and the related LED lamp indicates the status of this product. ¢ Error status output Signal on air conditioner error status is generated when a malfunction occurs. •...
  • Page 199 ¢ Compressor status output Signal on compressor operation status is generated when the compressor is running. • Circuit diagram example • 1: Power supply Outdoor unit Voltage (Vcc): DC 24 V or less Connected unit control PCB • 2: Load Connector DC 500 mA or less Power...

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