Mitsubishi Electric FRESH MASTER GUF-50RD4 Handbook
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Also See for FRESH MASTER GUF-50RD4:
- Installation instructions manual (171 pages) ,
- Operating instructions manual (114 pages) ,
- Operating instructions manual (14 pages)
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Summary of Contents for Mitsubishi Electric FRESH MASTER GUF-50RD4
- Page 1 June 2014 No. U189-A FRESH MASTER HANDBOOK Model : GUF-50RD GUF-50RDH GUF-100RD GUF-100RDH GUF-100RDH Nameplate Repair work must be performed by the manufacturer, its service agent or a similarly qualified person in order to avoid hazards.
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Page 2: Table Of Contents
Contents 1. Safety precautions ..............3-4 2. Names and functions of components .......... 4 3. Specifications ................5 4. Outside dimensions ..............6 5. Electrical wiring diagrams ............7-8 6. Circuit board diagrams ............9-10 7. Troubleshooting ..............11-17 8. Overhauling procedures ............18-28 9. -
Page 3: Safety Precautions
1. Safety precautions Read the following precautions thoroughly before the maintenance, and then inspect and repair the product in a safe manner. The types and levels of danger that may arise if the product is handled incorrectly are described with the warning symbols shown below. -
Page 4: Names And Functions Of Components
Incorrect handling of the product may result in injury or Caution damage to properties including buildings and equipment. Caution for injury Prevent water leakage Do not work at a location where you do not have a • Before removing any of the water-related parts, sure footing. -
Page 5: Specifications
Indoor: 20°C DB/13.8°C WB Outdoor: 7°C DB/6°C WB • Mitsubishi Electric measures products according to Japan Industrial Standard (JIS B 8628). • In the United Kingdom, on-site measurements by pitot tube method could be as much 20% different from JIS test room conditions. -
Page 6: Outside Dimensions
4. Outside dimensions GUF-50RD GUF-50RDH GUF-100RD GUF-100RDH GUF-100RDH Location at which the duct direction can be changed Ceiling suspension fixture Damper plate (4×13×30 length hole for GUF-50 types) Air exhaust fan (4×15×30 length hole for GUF-100 types) (Exhaust air) (Return air) Air supply fan (Supply air) (Outdoor air) -
Page 7: Electrical Wiring Diagrams
5. Electrical wiring diagrams GUF-50RD GUF-100RD ─ 7 ─... - Page 8 GUF-50RDH GUF-100RDH GUF-100RDH GUF-50RDH , GUF-100RDH 220-240 V 50 GUF-100RDH 220 V ─ 8 ─...
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Page 9: Circuit Board Diagrams
6. Circuit board diagrams Circuit board diagrams and check points <FU-M05-D4> 1 GUF-50RD GUF-50RDH GUF-100RD GUF-100RDH Fuse Power supply 220-240 V AC 50 Hz 16 to 23 V AC Supply fan Exhaust fan External humidifier control input Operation monitor output Supply fan Error monitor output 220-240 V AC... - Page 10 2 GUF-100RDH Fuse (6.3 A/250 V) Transformer primary (input) Power supply Transformer secondary (output) 220 V AC 60 Hz 16 to 23 V AC Supply fan (Common) Exhaust fan External humidifier (Common) control input Operation monitor output Supply fan high Error monitor output 220 V AC 60 Hz...
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Page 11: Troubleshooting
7. Troubleshooting Work precautions • When servicing, be sure to recreate the malfunction two or three times before starting repairs. • When servicing, always keep proper footing. • When servicing, make sure that the power supply isolator is off, so as no electrical shock or injury to occur. Pay sufficient attention when working on the product. - Page 12 Signal cables to external devices (Table 1-3) Check the following checkpoints when outputting the operation monitor and malfunction monitor. Checkpoint Action 1 Do the signal cables meet regulations? ( Type, diameter ) Use specified cables. 2 Is the signal cable wired at least 5 cm away from the power supply cable? Wire the signal cable at least 5 cm away from the power supply cable.
- Page 13 State of machine Remote controller Cause Remedy Does not operate. The power display When a power supply unit is used: 1 The power supply unit is not con- 1 Connect the power supply unit with “ ” does not nected with the transmission cable. the transmission cable.
- Page 14 (2) Troubleshooting 2: An error code is displayed on the remote controller. See below for possible remedies when there is an error during test operation and followed by a 4-digit CHECK number is displayed on the remote controller. Note: The components marked with * are available for GUF-50/100RDH types only.
- Page 15 Error code Error content Cause Remedy 6603 Communication er- The transmission processor cannot Inspect the transmission waveform and ror (Bus busy error transmit data because short-period volt- noise in the transmission cable line. in the transmission ages such as noise continuously occurs line) in the transmission cable line.
- Page 16 Error code Error content Cause Remedy 6607 Communication er- System connected with MELANS Refer to the remedy for the single coolant ror (No ACK error) a) Malfunction only in some of the units system • Refer to the causes for the single coolant system b) Malfunction in all the indoor units and Check the error display LEDs of the out-...
- Page 17 Error code Error content Cause Remedy 6831 MA remote control- Contact failure of the MA remote con- Check the transmission cable for discon- 6832 ler communication troller transmission cable nection or looseness. 6833 error The voltage/signal in the MA remote Check the transmission cable if the length 6834 controller transmission cable drops.
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Page 18: Overhauling Procedures
8. Overhauling procedures Work precautions • When touching the electric components such as circuit boards and fan motors, do not touch the components for more than 5 minutes after power-off, and then start working. • Before replacing parts, follow the instructions described in the troubleshooting. •... - Page 19 4 Unscrew the screws from the core guides (two PTT screws 4 × 12, indicated by ), and remove the core guides. Core guide 5 Remove the separators from the fan parts. 6 Disconnect the connectors for the motor lead wire. Separator 7 Unscrew the screws* (indicated by ) from the mo- Motor fix plate...
- Page 20 9 Unscrew the screws (two screws, indicated by ) to Reinforcement remove the reinforcement. 0 Unfasten the cord clips (two clips, indicated by ) to release the motor lead wire. When the motor lead wire is sealed as shown in the picture below 9 Unscrew the screws (two screws, indicated by ) to Peel the sealing material.
- Page 21 ( 3 ) Damper Motor Section Motor cover 1 Unscrew the screws* (indicated by ) from the mo- tor cover. *GUF-50 types: two PTT screws 4 × 6 GUF-100 types: two PTT screws 4 × 8 2 Take the damper motor out of the cover. Damper motor ( 4 ) Circuit Board Section 1 Unscrew the screws (four PT screws 4 ×...
- Page 22 3 Remove all lead wires connected to the circuit board. 4 Take the circuit board out. Circuit board "HIGH" Note: The compatible circuit board, which is equipped with switches (SW4 and SW5), is used as a ser- vice part. Assembly precaution After replacing the circuit board, switches (SW4 and SW5, indicated by ) must be set to "HIGH".
- Page 23 3 Remove the tubes from the humidifier elements Tube (elem). 4 Holding the hose bands indicated by [ 1 ] to [ 6 ] with your fingers, remove the tubes. Referring to the pro- Tube cedure 5 below, remove the tube at the rear while taking out the front humidifier elem.
- Page 24 ( 6 ) Solenoid Valve and Water Sensor Section Note: GUF-50/100RD types are not equipped with the solenoid valve and cover (SOLV). 1 Remove the H. elem. covers. → See (5) 1 to 2. Cover (left) Cover (center) Cover (right) 2 Unscrew the screws (eleven PTT screws 5 ×...
- Page 25 Water sensor and solenoid valve installation positions Connector for Connector for 6 Disconnect the connectors for the solenoid valve the solenoid valve the water sensor lead wires and water sensor lead wires. 7 Remove the pipe connected to the solenoid valve. *The heat exchanger is exceptionally removed for easy understanding.
- Page 26 0 Unscrew the screws (two PTT screws 4 × 8, indi- *The heat exchanger is exceptionally removed for easy understanding. cated by ) to remove the water sensor. Water sensor ( 7 ) Heat Exchanger Section 1 Remove the covers (left, center, and right) and the H. elem.
- Page 27 5 Hold the water stop (resin) with your fingers, and hold the lead wires by the fix piece (removed as shown in ( 7 ) 3). Hook the fix piece on the slit of the heat exchanger. Tighten the screws (two PTT screws 4 x 8, indicated by ), and secure the heat exchanger to the unit.
- Page 28 8 Tighten the screws (four PTT screws 5 × 10, indi- Cover (left) cated by ) to attach the cover (left). 9 Attach the H. elem. cover (inside). H. elem. cover ( inside ) 0 Tighten the screws (Seven PTT screws 5 x 10, indi- H.
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Page 29: Parts Catalog
9. Parts catalog Please note the following when using the parts catalog. 1. When ordering parts, always indicate the part number, part name, and the number of parts required. 2. Parts are not always available, and it may take time for you to receive them. 3. - Page 30 GUF-50RD 16 pcs. 2 pcs. 2 pcs. shows accessory parts. ─ 30 ─ GUF-50RD...
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Page 31: Guf-50Rd4
GUF-50RD4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Spl screw 4×11 M34 074 017 Maint. cover R50 542 486 PTT screw 4×12 H00 000 488 Core guide R50 216 381 Filter stopper R50 521 710 PTT screw 4×8 H00 000 487 Fix piece R50 429 700... - Page 32 Air supply fan assembly Air exhaust fan assembly ─ 32 ─ GUF-50RD...
- Page 33 GUF-50RD4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 51 Special nut (8) R50 331 067 Left-handed 52 Tab washer M34 398 077 53 Centrifugal fan R50 351 480 φ220 54 Fan base R50 478 707 55 Spl washer (10) M34 706 465 56 Motor Y55 011 453...
- Page 34 ─ 34 ─ GUF-50RD...
- Page 35 GUF-50RD4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 73 PTT screw 4×6 H00 312 007 76 Special bush R50 054 225 77 Rod R50 232 150 78 Pull spring R50 069 156 79 Damper support R50 472 716 80 Damper R50 472 715 81 Special bush...
- Page 36 GUF-50RDH 16 pcs. 2 pcs. 2 pcs. shows accessory parts. ─ 36 ─ GUF-50RDH...
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Page 37: Guf-50Rdh4
GUF-50RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Spl screw 4×11 M34 074 017 Maint. cover R50 542 486 Spl screw 4×12 H00 000 488 Core guide R50 216 381 Filter stopper R50 521 710 PTT screw 4×8 H00 000 487 Fix piece R50 429 700... - Page 38 Air supply fan assembly Air exhaust fan assembly ─ 38 ─ GUF-50RDH...
- Page 39 GUF-50RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 61 Special nut (8) R50 331 067 Left-handed 62 Tab washer M34 398 077 63 Centrifugal fan R50 351 480 φ220 64 Fan base R50 478 707 65 Spl washer (10) M34 706 465 66 Motor Y55 011 453...
- Page 40 ─ 40 ─ GUF-50RDH...
- Page 41 GUF-50RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 83 PTT screw 4×6 H00 312 007 86 Special bush R50 054 225 87 Rod R50 232 150 88 Pull spring R50 069 156 89 Damper support R50 472 716 90 Damper R50 472 715 91 Special bush...
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Page 42: Guf-100Rd
GUF-100RD 16 pcs. 4 pcs. 2 pcs. 2 pcs. shows accessory parts. ─ 42 ─ GUF-100RD... - Page 43 GUF-100RD4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Spl screw 4×11 M34 074 017 Maint. cover R50 543 487 Spl screw 4×12 H00 000 488 Core guide R50 219 381 Filter stopper R50 522 710 PTT screw 4×8 H00 000 487 Fix piece R50 429 700...
- Page 44 Air exhaust fan assembly Air supply fan assembly ─ 44 ─ GUF-100RD...
- Page 45 GUF-100RD4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 51 Spl nut (12) R50 218 067 Left-handed 52 Washer (12) K83 466 113 53 Centrifugal fan R50 479 480 φ245 54 Fan base R50 480 707 55 Inlet ring R50 264 711 56 PT screw 6×20 H00 157 008...
- Page 46 ─ 46 ─ GUF-100RD...
- Page 47 GUF-100RD4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 75 Special bush R50 054 225 76 Rod R50 265 150 77 Pull spring R50 074 156 78 Damper support R50 473 715 79 Damper R50 473 716 80 Special bush M31 234 089 81 Thermistor Y55 012 213...
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Page 48: Guf-100Rdh
GUF-100RDH 16 pcs. 5 pcs. 2 pcs. 2 pcs. shows accessory parts. ─ 48 ─ GUF-100RDH... - Page 49 GUF-100RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Spl screw 4×11 M34 074 017 Maint. cover R50 543 487 PTT screw 4×12 H00 000 488 Core guide R50 219 381 Filter stopper R50 522 710 PTT screw 4×8 H00 000 487 Fix piece R50 429 700...
- Page 50 ─ 50 ─ GUF-100RDH...
- Page 51 GUF-100RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 31 Cover (left) R50 531 693 32 Cover (center) R50 531 696 33 Cover (right) R50 531 697 34 H. elem. cover R50 430 694 35 PTT screw 5×10 H00 189 007 36 Heat exchanger R50 473 699...
- Page 52 Air exhaust fan assembly Air supply fan assembly ─ 52 ─ GUF-100RDH...
- Page 53 GUF-100RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 71 Spl nut (12) R50 218 067 Left-handed 72 Washer (12) K83 466 113 73 Centrifugal fan R50 479 480 φ245 74 Fan base R50 480 707 75 Inlet ring R50 264 711 76 PT screw 6×20 H00 157 008...
- Page 54 101 102 ─ 54 ─ GUF-100RDH...
- Page 55 GUF-100RDH4 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 95 Special bush R50 054 225 96 Rod R50 265 150 97 Pull spring R50 074 156 98 Damper support R50 473 715 99 Damper R50 473 716 100 Special bush M31 234 089 101 Thermistor Y55 012 213...
- Page 56 GUF-100RDH 16 pcs. 5 pcs. 2 pcs. 2 pcs. shows accessory parts. ─ 56 ─ GUF-100RDH...
- Page 57 GUF-100RDH4-60 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety Spl screw 4×11 M34 074 017 Maint. cover R50 543 487 PTT screw 4×12 H00 000 488 Core guide R50 219 381 Filter stopper R50 522 710 PTT screw 4×8 H00 000 487 Fix piece R50 429 700...
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Page 58: Guf-100Rdh -60
─ 58 ─ GUF-100RDH... - Page 59 GUF-100RDH4-60 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 31 Cover (left) R50 531 693 32 Cover (center) R50 531 696 33 Cover (right) R50 531 697 34 H. elem. cover R50 430 694 35 PTT screw 5×10 H00 189 007 36 Heat exchanger R50 473 699...
- Page 60 Air exhaust fan assembly Air supply fan assembly ─ 60 ─ GUF-100RDH...
- Page 61 GUF-100RDH4-60 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 71 Spl nut (12) R50 218 067 Left-handed 72 Washer (12) K83 466 113 73 Centrifugal fan R50 479 480 φ245 74 Fan base R50 480 707 75 Inlet ring R50 264 711 76 PT screw 6×20 H00 157 008...
- Page 62 101 102 ─ 62 ─ GUF-100RDH...
- Page 63 GUF-100RDH4-60 Critical Q'ty Name of part Parts No. Remarks pcs/unit safety 95 Special bush R50 054 225 96 Rod R50 265 150 97 Pull spring R50 074 156 98 Damper support R50 473 715 99 Damper R50 473 716 100 Special bush M31 234 089 101 Thermistor Y55 012 213...
- Page 64 Related Links Model Number: GUF-100RD4 GUF-100RD4 Specification GUF-50-100RD4 Declaration of Conformity GUF-50-100RD4 Installation Manual (1301875HF8601) GUF-50-100RD4 Instruction Book (1301875HF8501) GUF-50-100RD4 Service Manual (U189-A) GUF-50/100RD4 (CM) Product Information Sheet GUF-50/100RD4 (V) Product Information Sheet...