Mitsubishi Electric MSZ-GL09NA Service Manual
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Mitsubishi Electric MSZ-GL09NA Service Manual

Indoor unit
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See also: Installation Manual
INDOOR UNIT
SERVICE MANUAL
Models
MSZ-GL06NA -
MSZ-GL09NA -
MSZ-GL12NA -
MSZ-GL15NA -
MSZ-GL18NA -
MSZ-GL24NA -
MSZ-GL18NA
NOTE:
RoHS compliant products have <G> mark on the spec name plate.
Revision C:
GL24NA-
MSY-GL09NA -
U1
MSY-GL12NA -
U1
MSY-GL15NA -
U1
MSY-GL18NA -
U1
MSY-GL24NA -
U1
U1
Outdoor unit service manual
MUZ-GL NA, MUY-GL NA Series (OBH733)
MXZ-C NA, MXZ-C NAHZ Series (OCH573)
CONTENTS
2. PART NAMES AND FUNCTIONS ··················3
3. SPECIFICATION ········································6
4. OUTLINES AND DIMENSIONS ·····················8
5. WIRING DIAGRAM ··································· 10
6. REFRIGERANT SYSTEM DIAGRAM ··········· 12
7. SERVICE FUNCTIONS ······························ 13
8. MICROPROCESSOR CONTROL ················ 15
9. TROUBLESHOOTING ······························· 23
10. DISASSEMBLY INSTRUCTIONS ················· 41
PARTS CATALOG (OBB732)
MSZ-GL24NA-
and MSY-
U1
U1
No. OBH732
REVISED EDITION-C
U1
U1
U1
U1
U1
· ·······························
2

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Summary of Contents for Mitsubishi Electric MSZ-GL09NA

  • Page 1: Indoor Unit

    MSZ-GL24NA- and MSY- GL24NA- INDOOR UNIT No. OBH732 SERVICE MANUAL REVISED EDITION-C Models MSZ-GL06NA - MSY-GL09NA - MSZ-GL09NA - MSY-GL12NA - MSZ-GL12NA - MSY-GL15NA - MSZ-GL15NA - MSY-GL18NA - MSZ-GL18NA - MSY-GL24NA - MSZ-GL24NA - Outdoor unit service manual MUZ-GL NA, MUY-GL NA Series (OBH733)

  • Page 2: Technical Changes

    Revision A: MSZ-GL06/09/12/15NA- and MSY-GL09/12/15NA- Revision B: Revision C: MSZ-GL24NA- and MSY-GL24NA- TECHNICAL CHANGES MSZ-GL18NA - MSY-GL18NA - MSZ-GL24NA - MSY-GL24NA - MSZ-GL06NA - MSY-GL09NA - MSZ-GL09NA - MSY-GL12NA - MSZ-GL12NA - MSY-GL15NA - MSZ-GL15NA - OBH732C...

  • Page 3: Part Names And Functions

    PART NAMES AND FUNCTIONS MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSY-GL09NA MSY-GL12NA MSY-GL15NA Air lter (Nano platinum lter) Front panel Air cleaning lter (Anti-Allergy Enzyme Filter) Air inlet Heat exchanger Remote controller Air outlet Horizontal vane Display section Remote control receiving section...
  • Page 4 MSZ-GL18NA MSY-GL18NA Air inlet Front panel Air lter (Nano platinum lter) Air cleaning lter Heat exchanger (Anti-Allergy Enzyme Filter) Air outlet Horizontal vane Remote controller Display section Remote control receiving section Operation indicator lamp Emergency operation switch ACCESSORIES Remote controller holder Wireless remote controller OBH732C...
  • Page 5 MSZ-GL24NA MSY-GL24NA Front panel Air lter (Nano platinum filter) Air cleaning filter (Electrostatic anti-allergy enzyme filter) Air inlet Air outlet Remote controller Heat exchanger Horizontal vane Display section Operation indicator lamp Emergency operation switch Remote control receiving section ACCESSORIES Remote controller holder Wireless remote controller OBH732C...
  • Page 6 SPECIFICATION MSZ-GL09NA MSZ-GL12NA MSZ-GL06NA MSY-GL09NA MSY-GL12NA Moisture removal – Sound level MSZ-GL15NA MSZ-GL18NA MSZ-GL24NA MSY-GL15NA MSY-GL18NA MSY-GL24NA GL15/18 GL24 Moisture removal Sound level GL15/18 GL24 GL15/18 GL24 NOTE OBH732C...
  • Page 7 3-1. OPERATING RANGE 1 phase Mode Standard temperature — — Minimum temperature — — Standard temperature Minimum temperature 3-2. OUTLET AIR SPEED AND COVERAGE Model Mode MSZ-GL06NA tion. MSZ-GL09NA MSY-GL09NA MSZ-GL12NA MSY-GL12NA MSZ-GL15NA MSY-GL15NA MSZ-GL18NA MSY-GL18NA MSZ-GL24NA MSY-GL24NA OBH732C...

  • Page 8: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA Unit: inch MSY-GL09NA MSY-GL12NA MSY-GL15NA Gas line GL06/09/12NA GL15NA MSZ-GL18NA MSY-GL18NA 7/16×13/16 Oblong hole Installation plate 1×7/16 Oblong hole 3-11/16 Indoor unit 36-5/16 3-11/16 8-7/8 8-7/8 35-13/16 8-11/16 8-1/16 9-13/16 2-5/16 15-7/8 15-3/16 3/16 Wall hole Ø3...
  • Page 9 MSZ-GL24NA Unit: inch MSY-GL24NA OBH732C...

  • Page 10: Wiring Diagram

    WIRING DIAGRAM MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSY-GL09NA MSY-GL12NA MSY-GL15NA MSZ-GL18NA MSY-GL18NA OBH732C...
  • Page 11 MSZ-GL24NA MSY-GL24NA OBH732C...

  • Page 12: Refrigerant System Diagram

    REFRIGERANT SYSTEM DIAGRAM MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA Unit: inch (mm) MSY-GL09NA MSY-GL12NA MSY-GL15NA Refrigerant pipe ø3/8 (ø9.52) (MSZ-GL06/09/12NA, MSY-GL09/12NA) ø1/2 (ø12.7) (MSZ-GL15NA, MSY-GL15NA) (with heat insulator) Indoor coil Indoor thermistor heat RT12 (main) exchanger Flared connection Indoor coil thermistor RT13 (sub)

  • Page 13: Service Functions

    SERVICE FUNCTIONS MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSZ-GL18NA MSZ-GL24NA MSY-GL09NA MSY-GL12NA MSY-GL15NA MSY-GL18NA MSY-GL24NA 7-1. TIMER SHORT MODE 7-2. P.C. BOARD MODIFICATION FOR INDIVIDUAL OPERATION NOTE 1 unit operation 4 units operation — — — — — — set. OBH732C...
  • Page 14 7-3. AUTO RESTART FUNCTION Operation How to “AUTO RESTART FUNCTION” (GL06/09/12/15NA) (GL18/24NA) MSZ-GL06/09/12/15NA MSZ-GL18NA MSY-GL09/12/15NA MSY-GL18NA Indoor electronic Indoor electronic control P.C. board control P.C. board JR77 CN112 CN151 CN110 JR07 MSZ-GL24NA MSY-GL24NA NOTE: remote controller. cancelled. OBH732C...

  • Page 15: Microprocessor Control

    MICROPROCESSOR CONTROL MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSZ-GL18NA MSZ-GL24NA MSY-GL09NA MSY-GL12NA MSY-GL15NA MSY-GL18NA MSY-GL24NA WIRELESS REMOTE CONTROLLER MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSY-GL09NA MSY-GL12NA MSY-GL15NA Signal transmitting section Operation display section STOP/OPERATE FAN SPEED CONTROL button (OFF/ON) button OFF TIMER button OPERATION SELECT button...
  • Page 16 MSZ-GL24NA MSY-GL24NA Signal transmitting section Operation display section VANE CONTROL button STOP/OPERATE (Horizontal vane button) FAN SPEED CONTROL button (OFF/ON) button OPERATION SELECT button OFF TIMER button TEMPERATURE buttons ECONO COOL button ON TIMER button WIDE VANE button TIME SET buttons (Vertical vane button) FORWARD button BACKWARD button...
  • Page 17 8-1. COOL ( ) OPERATION 2. Low outside temperature operation 8-2. DRY ( ) OPERATION 2. Low outside temperature operation 8-3. HEAT ( ) OPERATION (MSZ) 1. Cold air prevention control 8-4. FAN( )OPERATION (MSY) 8-5. “I FEEL CONTROL” ( ) OPERATION (MSY) ation.
  • Page 18 Model or more COOL WARM … … Mode selection the set temperature. the set temperature. NOTE 1 (MSZ) NOTE 2 "FOR MULTI SYSTEM AIR CONDITIONER". NOTE 2 FOR MULTI SYSTEM AIR CONDITIONER OUTDOOR UNIT: MXZ series units to the same operation mode. <Operation indicator lamp>...
  • Page 19 8-7. AUTO VANE OPERATION 1. Horizontal vane Horizontal position (MSZ) NOTE: MSZ-GL24NA, MSY-GL24NA MSZ-GL24NA MSY-GL24NA OBH732C...
  • Page 20 2. Vertical vane (MSZ-GL18/24NA MSY-GL18/24NA) MSZ-GL18NA MSY-GL18NA SWING MSZ-GL24NA MSY-GL24NA SWING MSZ-GL24NA MSY-GL24NA NOTE: is selected. 8-8. TIMER OPERATION 1. How to set the time NOTE How to set the current time 2. To release the timer OBH732C...
  • Page 21 PROGRAM TIMER NOTE 8-9. SMART SET ( ) OPERATION (MSZ-GL06/09/12/15/18NA MSY-GL09/12/15/18NA) 1. How to SET SMART SET operation (MSZ) NOTE: (MSZ). (MSZ). (MSY). 2. How to cancel operation OBH732C...
  • Page 22 8-10. EMERGENCY/TEST OPERATION Set temperature Med. Med. (MSZ) NOTE: normal operation. 8-11. 3-MINUTE TIME DELAY OPERATION a thin instrument. OBH732C...

  • Page 23: Troubleshooting

    TROUBLESHOOTING MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSZ-GL18NA MSZ-GL24NA MSY-GL09NA MSY-GL12NA MSY-GL15NA MSY-GL18NA MSY-GL24NA 9-1. CAUTIONS ON TROUBLESHOOTING <Correct> <Incorrect> Lead wiring Connector housing then use the remote controller. Insert the negative pole of the batteries first. Check if the polarity RESET button of the batteries is correct.
  • Page 24 9-2. FAILURE MODE RECALL FUNCTION MSZ-GL06/09/12/15NA MSZ-GL18NA MSZ-GL24NA MSY-GL09/12/15NA MSY-GL18NA MSY-GL24NA While p seconds? ceived. seconds? NOTE 2. Blinking pattern when the indoor unit is abnormal: Blinking at 0.5- Blinking at 0.5- 2.5-second OFF second interval 2.5-second OFF second interval Beeps Beeps Beeps...
  • Page 25 — — Room temperature thermistor thermistor motor is operated. NOTE OBH732C...
  • Page 26 9-3. INSTRUCTION OF TROUBLESHOOTING Start not receive the ates. lamp on the indoor unit is mote controller. does not operate. does not operate nor operate even mal operation operation. operation. (MSZ) temperature to check thermistor. coil". controller and supplied to the indoor pressor".
  • Page 27 9-4. TROUBLESHOOTING CHECK TABLE point or serial ror". thermistor mistor is short or open circuit. room temperature thermistor Room tem perature thermistor motor Replace the indoor electronic outdoor unit do not operate. manual startup. thermistor". thermistors manual. or the outdoor electronic control manual.
  • Page 28 9-5. TROUBLE CRITERION OF MAIN PARTS MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSZ-GL18NA MSZ-GL24NA MSY-GL09NA MSY-GL12NA MSY-GL15NA MSY-GL18NA MSY-GL24NA Room temperature MSZ-GL06/09/12/15NA ROTOR MSY-GL09/12/15NA MSZ-GL18/24NA MSZ-GL18NA MSY-GL18/24NA ROTOR ROTOR MSZ-GL24NA OBH732C...
  • Page 29 9-6. TROUBLESHOOTING FLOW MSZ-GL06/09/12/15/18NA MSY-GL09/12/15/18NA MSZ-GL06/09/12/15NA MSZ-GL18NA MSZ-GL06/09/12/15NA MSZ-GL18NA Replace the indoor electronic MSZ- GL06/09/12/15NA MSZ-GL18NA Replace the indoor MSZ-GL06/09/12/15NA OBH732C...
  • Page 30 MSZ-GL24NA MSY-GL24NA pressed? Replace the indoor electronic control Replace the indoor OBH732C...
  • Page 31 MSZ-GL06/09/12/15/18NA MSY-GL09/12/15/18NA smartphone camera. controller. controller? controller. Replace the remote controller. Replace the indoor electronic control MSZ-GL24NA MSY-GL24NA smartphone camera. controller. controller? controller. Replace the remote controller. Replace OBH732C...
  • Page 32 MSZ-GL06/09/12/15NA MSY-GL09/12/15NA Short circuit: motor. controller? Short circuit: motor coil. Replace the vane motor and the indoor motor connector. 1 Replace the indoor motor. Indoor electronic control P.C. board JPN (GND) CN10A 12 VDC 5 VDC Indoor terminal P.C. board disconnection.
  • Page 33 MSZ-GL18NA MSY-GL18NA motor. controller? motor coil. Replace the vane motor and the indoor on the motor connector. 1 Replace the indoor resistor R111 the indoor electronic control disconnection. disconnected? OBH732C...
  • Page 34 MSZ-GL24NA MSY-GL24NA Turn OFF the power supply. Remove indoor fan motor connector CN211 and vane motor Short/ open circuit: Measure the resistance between CN211 Replace the indoor fan motor. connectors CN151 and CN152 from the indoor electronic of the indoor fan motor connector. control P.C.
  • Page 35 MSZ-GL06/09/12/15NA MSY-GL09/12/15NA unit> tion starts. outdoor service manual or not capacitor. Reinstall either the unit Replace the indoor elec each other. minutes later? on remote control receiv unit. OBH732C...
  • Page 36 MSZ-GL18/24NA MSY-GL18/24NA unit> later? tion starts. or not capacitor. GL18 GL24 Reinstall either the unit Replace the indoor elec each other. minutes later? on remote control receiv unit. OBH732C...
  • Page 37 Ground the unit. outdoor unit. radios and the outdoor unit. Replace or repair the antenna. the antennas close? noise. OBH732C...
  • Page 38 MSZ-GL06/09/12/15NA MSY-GL09/12/15NA MSZ-GL06/09/12/15NA MSY-GL09/12/15NA Room temperature thermistor (RT11) Indoor coil thermistor (RT12, RT13) 32 50 68 86 104 122 140 Temperature (°F) OBH732C...
  • Page 39 MSZ-GL18NA MSY-GL18NA mode point Room temperature thermistor (RT11) Indoor coil thermistor (RT12, RT13) operation 32 50 68 86 104 122 140 Temperature (°F) OBH732C...
  • Page 40 MSZ-GL24NA MSY-GL24NA Resistor Room temperature Room temperature thermistor (RT11) Indoor coil thermistor (RT12, RT13) 32 50 68 86 104 122 140 Temperature (°F) OBH732C...

  • Page 41: Disassembly Instructions

    Sleeve Slide the sleeve. Hold the sleeve, and Pull the terminal while pull out the terminal pushing the locking slowly. Locking lever lever. Connector 10-1. MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSY-GL09NA MSY-GL12NA MSY-GL15NA NOTE: OPERATING PROCEDURE PHOTOS Photo 1 OBH732C...
  • Page 42 OPERATING PROCEDURE PHOTOS Photo 2 clamp. electrical cover electrical cover. control Photo 3 duit cover. duit plate. conduit plate conduit cover Photo 4 OBH732C...
  • Page 43 OPERATING PROCEDURE PHOTOS Photo 5 motor. vane motor unit. OBH732C...
  • Page 44 OPERATING PROCEDURE PHOTOS Photo 6 Photo 7 5/32 inch (4 mm) Photo 9 Photo 8 OBH732C...
  • Page 45 10-2. MSZ-GL18NA MSY-GL18NA NOTE: OPERATING PROCEDURE PHOTOS Photo 1 OBH732C...
  • Page 46 OPERATING PROCEDURE PHOTOS Photo 2 Water cover electrical cover mistor mistor connec cover. plate. Photo 3 the electrical cover. Photo 4 conduit cover the conduit plate OBH732C...
  • Page 47 OPERATING PROCEDURE PHOTOS Photo 5 Room temperature thermistor Photo 6 vane motor. OBH732C...
  • Page 48 OPERATING PROCEDURE PHOTOS Photo 7 Photo 8 5/32 inch (4 mm) Photo 9 Photo 10 the heat OBH732C...
  • Page 49 10-3. MSZ-GL24NA MSY-GL24NA NOTE: OPERATING PROCEDURE PHOTOS Photo 1 Photo 2 clamp. duit cover. electrical cover the electrical cover. receiver holder Photo 3 the electrical cover. conduit cover OBH732C...
  • Page 50 OPERATING PROCEDURE PHOTOS Photo 4 vane motor unit Photo 5 pull the vertical vane motor unit. the vertical vane motor cover. unit cover motor unit. the vertical vane motor. Photo 6 motor. cover. vane motor unit. motor unit cover motor unit OBH732C...
  • Page 51 OPERATING PROCEDURE PHOTOS Photo 8 Photo 9 13/64 inch (5 mm) Photo 10 Photo 7 electrical cover receiver holder OBH732C...
  • Page 52 Clip shape Holder shape 1. Set the indoor coil NOTE: Issued: Jun. 2017. No. OBH732 REVISED EDITION-C Issued: Mar. 2016. No. OBH732 REVISED EDITION-B Issued: Nov. 2015. No. OBH732 REVISED EDITION-A Sep. 2015. No. OBH732 Made in Japan...

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