Table of Contents
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INDOOR UNIT
SERVICE MANUAL
Models
MSXY-FN07VE
Revision C:
• The drawing of the printed circuit board of the remote
controller for MSXY-FN07/10/13/18/20/24VE-
been corrected in 8. SERVICE FUNCTIONS.
OBH779 REVISED EDITION-B is void.
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R1
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R2
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R1
,
R2
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R1
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R2
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R1
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R2
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R1
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R2
Outdoor unit service manual
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R1
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R2
MXY-G·VA -
CONTENTS
1. TECHNICAL CHANGES ··································· 3
2. PART NAMES AND FUNCTIONS ····················· 4
3. SPECIFICATION ················································ 6
4. NOISE CRITERIA CURVE ································ 8
5. OUTLINES AND DIMENSIONS ······················ 10
6. WIRING DIAGRAM ···········································11
7. REFRIGERANT SYSTEM DIAGRAM ············· 12
8. SERVICE FUNCTIONS ··································· 13
9. MICROPROCESSOR CONTROL ··················· 15
10. TROUBLESHOOTING ····································· 21
11. DISASSEMBLY INSTRUCTIONS ···················· 38
PARTS CATALOG (OBB779)
have
R2
No. OBH779
REVISED EDITION-C
Series (OBH722)
R
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Table of Contents
Related Manuals for Mitsubishi Electric MSXY-FN07VE-R1
Summary of Contents for Mitsubishi Electric MSXY-FN07VE-R1
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Page 1: Table Of Contents
Revision C: • The drawing of the printed circuit board of the remote controller for MSXY-FN07/10/13/18/20/24VE- have been corrected in 8. SERVICE FUNCTIONS. OBH779 REVISED EDITION-B is void. INDOOR UNIT No. OBH779 REVISED EDITION-C SERVICE MANUAL Models MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE MSXY-FN20VE MSXY-FN24VE... - Page 2 Use the specified refrigerant only Never use any refrigerant other than that specified. Doing so may cause a burst, an explosion, or fire when the unit is being used, serviced, or disposed of. Correct refrigerant is specified in the manuals and on the spec labels provided with our products. We will not be held responsible for mechanical failure, system malfunction, unit breakdown or accidents caused by failure to follow the instructions.
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Page 3: Msxy-Fn10Ve
TECHNICAL CHANGES The following models are compatible with the outdoor units with low standby power control. Connecting the following models to the MXY series with the low standby power control enables the low standby power control. The following models may be connected to the MXY series with the low standby power control after once connected to the MXY series without the low standby power control and operated, for example because of relocation. -
Page 4: Part Names And Functions
PART NAMES AND FUNCTIONS MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE Heat exchanger Front panel Air filter (Nano platinum filter) Air inlet Air cleaning filter (Microparticle catching filter), (Anti-Allergy Enzyme Filter, option) Vertical vane Air outlet Fan guard Remote controller Horizontal vane Display section Remote control receiving section Operation indicator lamp... - Page 5 MSXY-FN20VE MSXY-FN24VE Heat exchanger Front panel Air inlet Air filter (Nano platinum filter) Air cleaning filter (Microparticle catching filter), (Anti-Allergy Enzyme Filter, option) Air outlet Vertical vane Remote controller Fan guard Horizontal vane Display section Remote control receiving section Operation indicator lamp Emergency operation switch ACCESSORIES MSXY-FN07VE...
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Page 6: Specification
SPECIFICATION MSXY- Indoor model FN07VE- FN10VE- FN13VE- FN18VE- FN20VE- FN24VE- Power supply Single phase 230-240V, 50Hz” Power input *1 Running current *1 0.21 0.27 0.33 0.38 0.52 Model RC0J40-EF RC0J30-MD Current *1 0.21 0.27 0.33 0.38 0.52 Dimensions W × H × D 799 x 290 x 232 923 x 305 x 250 Weight... - Page 7 MSXY- Indoor model FN07VE- FN10VE- FN13VE- FN18VE- FN20VE- FN24VE- Power supply Single phase 230-240V, 50Hz” Power input *1 Running current *1 0.21 0.27 0.33 0.38 0.52 Model RC0J40-EF RC0J30-MD Current *1 0.21 0.27 0.33 0.38 0.52 Dimensions W × H × D 799 x 290 x 232 923 x 305 x 250 Weight...
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Page 8: Noise Criteria Curve
NOISE CRITERIA CURVES MSXY-FN07VE MSXY-FN10VE FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE Super High Super High COOLING COOLING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 NC-10 NC-10 1000 2000 4000 8000 1000 2000 4000 8000... - Page 9 MSXY-FN20VE MSXY-FN24VE FAN SPEED FUNCTION SPL(dB(A)) LINE FAN SPEED FUNCTION SPL(dB(A)) LINE Super High Super High COOLING COOLING NC-70 NC-70 NC-60 NC-60 NC-50 NC-50 NC-40 NC-40 NC-30 NC-30 NC-20 NC-20 NC-10 NC-10 1000 2000 4000 8000 1000 2000 4000 8000 BAND CENTER FREQUENCIES, Hz BAND CENTER FREQUENCIES, Hz Test conditions...
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Page 10: Outlines And Dimensions
OUTLINES AND DIMENSIONS MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE Unit: mm 11×26 Oblong hole 11×20 Oblong hole Installation plate 80.5 80.5 Indoor unit 61.5 59.5 ø Wall hole Air in Installation plate Piping Drain hose Air out Insulation ø37 O.D Liquid line ø7 - 0.39m (Flared connection ø6.35) ø9.52 - 0.34m[Flared connection ø9.52(MSXY-FN07/10/13VE), Gas line... -
Page 11: Wiring Diagram
WIRING DIAGRAM MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE MSXY-FN20VE MSXY-FN24VE OBH779C... -
Page 12: Refrigerant System Diagram
REFRIGERANT SYSTEM DIAGRAM MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE Unit: mm Refrigerant pipe ø9.52 (MSXY-FN07/10/13VE) ø12.7 (MSXY-FN18VE) (with heat insulator) Indoor coil Indoor thermistor heat RT12 (main) exchanger Flared connection Indoor coil thermistor RT13 (sub) Room temperature thermistor RT11 Flared connection Refrigerant pipe ø6.35 (with heat insulator) Refrigerant flow in cooling MSXY-FN20VE MSXY-FN24VE... -
Page 13: Service Functions
SERVICE FUNCTIONS MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE MSXY-FN20VE MSXY-FN24VE 8-1. TIMER SHORT MODE For service, the following set time can be shortened by bridging the timer short mode point on the electronic control P.C. board. (Refer to 10-7.2.) • The set time for the ON/OFF timer can be reduced to 1 second for each minute. •... - Page 14 8-3. AUTO RESTART FUNCTION When the indoor unit is controlled with the remote controller, the operation mode, the set temperature, and the fan speed are memorized by the indoor electronic control P.C. board. “AUTO RESTART FUNCTION” automatically starts operation in the same mode just before the shutoff of the main power.
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Page 15: Microprocessor Control
MICROPROCESSOR CONTROL MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE MSXY-FN20VE MSXY-FN24VE WIRELESS REMOTE CONTROLLER MSXY-FN07/10/13/18/20/24VE- Signal transmitting section Distance of signal : About 6 m Beep(s) is (are) heard from the indoor unit when the signal is received. Operation display section STOP/OPERATE FAN SPEED CONTROL button (OFF/ON) button OFF TIMER button OPERATION SELECT button... - Page 16 INDOOR UNIT DISPLAY SECTION Operation Indicator lamp The operation indicator at the right side of the indoor unit indicates the operation state. •The following indication applies regardless of shape of the indication. Indication Operation state Room temperature The unit is operating to About 2°C or more away reach the set temperature from set temperature...
- Page 17 9-2. DRY ( ) OPERATION (1) Press STOP/OPERATE (OFF/ON) button. OPERATION INDICATOR lamp of the indoor unit turns ON with a beep tone. (2) Select DRY mode with OPERATION SELECT button. (3) The set temperature is determined from the initial room temperature. 1.
- Page 18 9-5. AUTO VANE OPERATION 1. Horizontal vane (1) Vane motor drive These models are equipped with a stepping motor for the horizontal vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approximately 12 V) transmitted from indoor microprocessor. (2) The horizontal vane angle and mode change as follows by pressing VANE CONTROL button.
- Page 19 9-6. TIMER OPERATION 1. How to set the time (1) Check that the current time is set correctly. NOTE: Timer operation will not work without setting the current time. Initially “0:00” blinks at the current time display of TIME MONITOR, so set the current time correctly with CLOCK SET button. How to set the current time (a) Press the CLOCK set button.
- Page 20 9-8. EMERGENCY/TEST OPERATION In the case of test run operation or emergency operation, use Operation mode COOL EMERGENCY OPERATION switch on the right side of the indoor unit. Set temperature 24°C Emergency operation is available when the remote controller is miss- Fan speed Medium ing or has failed, or when the batteries in the remote controller are...
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Page 21: Troubleshooting
TROUBLESHOOTING MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE MSXY-FN20VE MSXY-FN24VE 10-1. CAUTIONS ON TROUBLESHOOTING 1. Before troubleshooting, check the following 1) Check the power supply voltage. 2) Check the indoor/outdoor connecting wire for miswiring. 2. Take care of the following during servicing 1) Before servicing the air conditioner, be sure to turn OFF the main unit first with the remote controller, and then after confirming the horizontal vane is closed, turn OFF the breaker and/or disconnect the power plug. - Page 22 5. How to install the horizontal vane If horizontal vane is not installed correctly, all of the operation indicator lamps will blink. In this case, install the horizontal vane correctly by following the procedures NOTE: Before installation of the horizontal vane, turn OFF the power supply. Install the horizontal vane.
- Page 23 10-2. FAILURE MODE RECALL FUNCTION Outline of the function This air conditioner can memorize the abnormal condition which has occurred once. Even though LED indication listed on the troubleshooting check table (10-4.) disappears, the memorized failure details can be recalled. 1.
- Page 24 NOTE: Blinking patterns of this mode differ from the ones of 2. Table of indoor unit failure mode recall function TROUBLESHOOTING CHECK TABLE (10-4.). Upper lamp of OP- Abnormal point ERATION INDICA- Condition Remedy (Failure mode) TOR lamp Not lit Normal —...
- Page 25 10-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit does OPERATION INDICATOR Indoor unit operates. not receive Outdoor unit does lamp on the indoor unit is the signal from not operate. blinking on and off. remote controller. If blinking of OPERATION INDI- CATOR lamp cannot be checked, it can be checked with failure Indoor unit...
- Page 26 10-4. TROUBLESHOOTING CHECK TABLE Before taking measures, make sure that the symptom reappears for accurate troubleshooting. When the indoor unit has started operation and detected an abnormality of the following condition (the first detection after the power ON), the indoor fan motor turns OFF and OPERATION INDICATOR lamp blinks. OPERATION INDICATOR Blinking Not lit...
- Page 27 OPERATION INDICATOR Blinking Not lit Abnormal Operation indicator lamp Symptom Condition Remedy point All lamps blink at the same time. Attachment Indoor unit and • Refer to 10-6. "Check of 0.5-second ON The electricity is not conducted to the inter- of the hori- outdoor unit do installation of the horizontal...
- Page 28 10-6. TROUBLESHOOTING FLOW A Check of indoor fan motor The indoor fan motor error has occurred, and the indoor fan does not operate. Turn OFF the power supply. Pay enough attention to the high voltage on the fan motor connector CN211. Turn ON the power supply, wait 5 seconds or more, and then press EMERGENCY OPERATION switch.
- Page 29 B Check of remote controller and indoor electronic control P.C. board Check if the remote controller is exclusive for this air conditioner. Press STOP/OPERATE (OFF/ON) button on the remote controller. 1 Look at the image of the signal transmitting section of Is LCD display on the remote controller Replace the batteries.
- Page 30 C Check of indoor P.C. board and indoor fan motor Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane Measure the resistance of indoor fan Short circuit: motor connector CN151 from the indoor motor.
- Page 31 D How to check miswiring and serial signal error Outdoor units are non-low-standby-power models. MXY-2G20VA MXY-2G20VA2 Turn OFF the power supply. Is there rated voltage in the power supply? Check the power supply. Check for incorrect indoor-outdoor connecting wiring. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring.
- Page 32 MXY-2G20VA MXY-2G20VA2 Turn ON the power supply. LED indication for communication status Communication status is indicated by the LED. Is there rated voltage Check the power supply Unit status between outdoor Blinking: normal communication and correct the problem. terminal block S1 and S2? Lighted: abnormal communication or not connected Not lighted: The outdoor P.C.
- Page 33 Outdoor units are low-standby-power models. MXY-3G28VA MXY-4G28VA MXY-4G38VA MXY-5G48VA MXY-3G28VA2 MXY-4G33VA2 MXY-4G38VA2 MXY-5G48VA2 Turn the power supply OFF. Is there rated voltage in the power supply? Check the power supply. Check for incorrect indoor-outdoor connecting wiring. • Turn OFF inverter-controlled lighting equipment.
- Page 34 E Check of installation of the horizontal vane Turn OFF the power supply. Re-lock the stopper of the hori- Is the stopper of the horizontal vane Turn ON the zontal vane to the indoor unit. locked to the indoor unit correctly? power supply.
- Page 35 F Electromagnetic noise enters into TV sets or radios Is the unit earthed? Earth the unit. Is the distance between the antennas Extend the distance between the antennas and and the indoor unit within 3 m, or is the the indoor unit, and/or the antennas and the distance between the antennas and the outdoor unit.
- Page 36 10-7. TEST POINT DIAGRAM AND VOLTAGE MSXY-FN07VE MSXY-FN10VE MSXY-FN13VE MSXY-FN18VE 1. Indoor power P.C. board Connector to Fuse (F11) Terminal block (CN201) T3.15AL250V Varistor (NR11) Resistor (R111) Connector to Indoor fan motor (CN211) (+)0 or 15 V DC (+)3-6 V DC 15 V DC (-) GND (High voltage DC)
- Page 37 MSXY-FN20VE MSXY-FN24VE 1. Indoor power P.C. board 5 V DC Connector to indoor electronic control P.C. board (CN20A) 12 V DC Connector to Terminal block (CN201) Fuse (F11) T3.15AL250V Varistor (NR11) Connector to Indoor fan motor (CN211) Resistor (R111) 325 V DC (+)0 or 15 V DC (-) GND (+)3-6 V DC...
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Page 38: Disassembly Instructions
DISASSEMBLY INSTRUCTIONS <Detaching method of the terminal with locking mechanism> The terminal which has the locking mechanism can be detached as shown below. There are 2 types of the terminals with locking mechanism. The terminal without locking mechanism can be detached by pulling it out. Check the shape of the terminal before detaching. - Page 39 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the indoor power P.C. board and the Photo 2 electrical box (1) Remove the panel. (Refer to section 1.) Remove the right Interlock switch corner box. connector CN1R1 Earth wire (2) Disconnect the following connectors: <Indoor electronic control P.C.
- Page 40 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the indoor electronic control P.C. Photo 4 board Control P.C. board holder (Inside) (1) Remove the panel. (Refer to section 1.) Remove the right Catch corner box. (2) Disconnect the following connectors: Indoor electronic <Indoor electronic control P.C. board> control P.C.
- Page 41 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the indoor fan motor, the indoor coil Photo 7 thermistor and the line flow fan (1) Remove the panel. (Refer to section 1.) Remove the corner box. (2) Remove the control P.C. board holder, the electrical box and the nozzle assembly.
- Page 42 11-2. MSXY-FN20VE MSXY-FN24VE NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the panel Photo 1 (1) Remove the screw caps on the panel and remove the Front panel screws of the panel. (2) Pull the panel slightly toward you, and then remove the panel by pushing it upward.
- Page 43 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the indoor power P.C. board and the Photo 2 electrical box Screws of the earth plate (1) Remove the panel. (Refer to section 1.) Remove the Water cover right corner box. Screw of the (2) Disconnect the following connectors: electrical cover <Indoor electronic control P.C.
- Page 44 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the indoor electronic control P.C. Photo 4 board Control P.C. board holder (Inside) (1) Remove the panel. (Refer to section 1.) Remove the right Catch corner box. Indoor electronic (2) Disconnect the following connectors: control P.C. board <Indoor electronic control P.C.
- Page 45 OPERATING PROCEDURE PHOTOS/FIGURES 5. Removing the vane motor Photo 6 (1) Remove the panel. (Refer to section 1.) Remove the right corner box. (2) Remove the control P.C. board holder, water cover and the electrical box. (Refer to section 2.) (3) Pull out the drain hose from the nozzle assembly and remove the nozzle assembly.
- Page 46 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the indoor fan motor, the indoor coil Photo 7 thermistor and the line flow fan (1) Remove the panel. (Refer to section 1.) Remove the Screws of the right corner box. motor bed (2) Remove the control P.C. board holder, the water cover, the electrical box and the nozzle assembly.
- Page 47 Fixing the indoor coil thermistor There are 2 forms of parts for fixing the indoor coil thermistor. When fixing the indoor coil thermistor to the clip-shape/holder-shape part, the Clip shape Holder shape lead wire should point down. About the same length Position and procedure for mounting the clip-shape part 1.
- Page 48 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2017 MITSUBISHI ELECTRIC CORPORATION Issued: Feb. 2019. No. OBH779 REVISED EDITION-C Issued: May 2018. No. OBH779 REVISED EDITION-B Issued: Sep. 2017. No. OBH779 REVISED EDITION-A Published: Jul. 2017. No. OBH779 Made in Japan Specifications are subject to change without notice.