Mitsubishi Electric MSZ-GL06NA Service Manual
  1. Manuals
  2. Brands
  3. Mitsubishi Electric Manuals
  4. Air Conditioner
  5. MSZ-GL06NA
  6. Service manual

Mitsubishi Electric MSZ-GL06NA Service Manual

Hide thumbs Also See for MSZ-GL06NA:
Table of Contents

Advertisement

Quick Links

INDOOR UNIT
SERVICE MANUAL
Models
MSZ-GL18NA
MSY-GL09NA
-
,
U1
U2
MSY-GL12NA
-
,
U1
U2
MSY-GL15NA
-
,
U1
U2
MSY-GL18NA
-
,
U1
U2
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
1. TECHNICAL CHANGES ······························2
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 ················· 42
PARTS CATALOG (OBB732)
Revision D:
• MSZ-GL06/09/12/15NA -
U2
MSY-GL09/12/15NA -
have been
U2
added.
OBH732 REVISED EDITION-C is void.
No. OBH732
REVISED EDITION-D
-
,
U1
-
,
U1
-
,
U1
-
U1
-
U1
and
U2
U2
U2

Advertisement

Table of Contents
loading

Related Manuals for Mitsubishi Electric MSZ-GL06NA

Summary of Contents for Mitsubishi Electric MSZ-GL06NA

  • Page 1: Table Of Contents

    Revision D: • MSZ-GL06/09/12/15NA - MSY-GL09/12/15NA - have been added. OBH732 REVISED EDITION-C is void. INDOOR UNIT No. OBH732 REVISED EDITION-D SERVICE MANUAL 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) MXZ-C•NA, MXZ-C•NAHZ Series (OCH573)

  • Page 2: Msz-Gl06Na

    • MSZ-GL06/09/12/15NA - and MSY-GL09/12/15NA - have been added. TECHNICAL CHANGES MSZ-GL18NA - MSY-GL18NA - MSZ-GL24NA - MSY-GL24NA - 1. New model MSZ-GL06NA - MSY-GL09NA - MSZ-GL09NA - MSY-GL12NA - MSZ-GL12NA - MSY-GL15NA - MSZ-GL15NA - 1. New model MSZ-GL06NA -...

  • 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 fi lter (Nano platinum fi lter) Front panel Air cleaning fi lter (Anti-Allergy Enzyme Filter) Air inlet Heat exchanger Remote controller Air outlet Horizontal vane Remote control receiving section...
  • Page 4 MSZ-GL18NA MSY-GL18NA Air inlet Front panel Air fi lter (Nano platinum fi lter) Air cleaning fi lter Heat exchanger (Anti-Allergy Enzyme Filter) Air outlet Horizontal vane Remote controller Remote control receiving section Operation indicator lamp Emergency operation switch ACCESSORIES Installation plate Installation plate fixing screw 4 ×...
  • Page 5 MSZ-GL24NA MSY-GL24NA Front panel Air fi lter (Nano platinum filter) Air cleaning filter (Electrostatic anti-allergy enzyme filter) Air inlet Air outlet Remote controller Heat exchanger Horizontal vane Operation indicator lamp Emergency operation switch Remote control receiving section ACCESSORIES Installation plate Installation plate fixing screw 4 ×...

  • Page 6: Specification

    SPECIFICATION MSZ-GL09NA MSZ-GL12NA Indoor model MSZ-GL06NA MSY-GL09NA MSY-GL12NA Power supply V, phase, Hz 208/230, 1, 60 Max. fuse size (time delay)/ Disconnect switch A Min. circuit ampacity Fan motor F.L.A 0.76 COOL Dry 399 - 321 - 237 - 170 - 145...
  • Page 7 (CFM) (ft./s.) (ft.) when air is blown out horizontally from HEAT 20.6 29.5 the unit properly at the High speed MSZ-GL06NA 16.3 23.5 position. COOL The coverage should be used only as a 14.5 21.0 general guideline since it varies accord- HEAT 20.6...

  • Page 8: Outlines And Dimensions

    OUTLINES AND DIMENSIONS MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA Unit: inch MSY-GL09NA MSY-GL12NA MSY-GL15NA Insulation ø1 - 3/8 O.D Liquid line ø1/4 19 - 11/16 (Flared connection ø1/4) ø3/8 16 - 15/16 Gas line (Flared connection: ø3/8 (GL06/09/12NA), ø1/2 (GL15NA)) Drain hose Insulation ø1-1/8 O.D Connected part ø5/8 O.D...
  • Page 9 MSZ-GL24NA Unit: inch MSY-GL24NA OBH732D...

  • Page 10: Wiring Diagram

    WIRING DIAGRAM MSZ-GL06NA - MSZ-GL09NA - MSZ-GL12NA - MSZ-GL15NA - MSY-GL09NA - MSY-GL12NA - MSY-GL15NA - MSZ-GL06NA - MSZ-GL09NA - MSZ-GL12NA - MSZ-GL15NA - MSY-GL09NA - MSY-GL12NA - MSY-GL15NA - OBH732D...
  • Page 11 MSZ-GL18NA MSY-GL18NA MSZ-GL24NA MSY-GL24NA OBH732D...

  • 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 For service, the set time can be shortened by bridging of the timer short point on the indoor electronic control P.C. board. The time will be shortened as follows. (Refer to 9-7.) •...
  • Page 14 7-3. 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 shut-off of the main power.

  • 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 E.g.: MSZ type MSZ-GL06NA - MSZ-GL09NA - MSZ-GL12NA - MSZ-GL15NA - MSY-GL09NA - MSY-GL12NA - MSY-GL15NA - Signal transmitting section Operation display section OFF/ON...
  • Page 16 MSZ-GL18NA MSY-GL18NA Signal transmitting section Operation display section OFF/ON Fan speed control button (STOP/OPERATE) button Off-timer button Operation select button On-timer button ECONO COOL button Temperature buttons TIME set buttons VANE control button forward button backward button WIDE VANE button (Vertical vane button) CLOCK button SMART SET button...
  • Page 17 8-1. COOL ( ) OPERATION (1) Press OFF/ON (stop/operate) button. OPERATION INDICATOR lamp of the indoor unit turns ON with a beep tone. (2) Select COOL mode with OPERATION SELECT button. (3) Press Temperature buttons (TEMP button/TOO WARM or TOO COOL button) to select the desired temperature. The setting range is 61 ~ 88°F (16 ~ 31°C).
  • Page 18 (4) The initial set temperature is decided by the initial room temperature. Initial room temperature Model Initial set temperature 79°F (26°C) or more 75°F (24°C) COOL mode of "I FEEL CONTROL" 77 to 79°F (25 to 26°C) Initial room temperature minus 4°F (2°C) DRY mode of Less than 79°F (25°C) Initial room temperature minus 4°F (2°C)
  • Page 19 8-7. 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 20 2. Vertical vane (MSZ-GL18/24NA MSY-GL18/24NA) (1) Vane motor drive These models are equipped with a stepping motor for the vertical vane. The rotating direction, speed, and angle of the motor are controlled by pulse signals (approximately 12 V) transmitted from microprocessor. (2) The vertical vane angle and mode change as follows by pressing WIDE VANE button.
  • Page 21 PROGRAM TIMER • OFF timer and ON timer can be used in combination. The set time that is reached first will operate first. • “ ” and “ ” display shows the order of OFF timer and ON timer operation. (Example 1) The current time is 8:00 PM.
  • Page 22 8-10. EMERGENCY/TEST OPERATION In the case of test run operation or emergency operation, use the emergency operation switch on the right side of the indoor unit. Emergency operation is available when the remote con- troller is missing, has failed, or when the batteries in the remote Operation mode COOL HEAT (MSZ)

  • 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 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 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 24 9-2. 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 (9-4.) disappears, the memorized failure details can be recalled. MSZ-GL06/ MSZ-GL06/ 1.
  • Page 25 2. Table of indoor unit failure mode recall function Upper lamp of Abnormal point OPERATION Condition Remedy (Failure mode) INDICATOR lamp Not lit Normal — — The room temperature thermistor short or 1-time blink every Room temperature Refer to the characteristics of the room temperature open circuit is detected every 8 seconds dur- 0.5-second thermistor...
  • Page 26 9-3. INSTRUCTION OF TROUBLESHOOTING Start Indoor unit operates. Indoor unit operates. Indoor unit does not OPERATION INDICATOR Outdoor unit does not Outdoor unit does receive the signal from lamp on the indoor unit is operate. not operate normally. remote controller. blinking ON and OFF.
  • Page 27 9-4. 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 28 9-5. TROUBLESHOOTING 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 Part name Check method and criterion Figure Room temperature Measure the resistance with a multimeter.
  • Page 29 (–). 2. Measure the voltage between CN211 (+) and (–). <Indoor electronic control P.C. board> 3. Measure the voltage between CN10A (+) (MSZ-GL06NA, MSZ/ MSY-09/12/15NA)/ (+) (MSZ/MSY-GL18NA) and JPG(GND)(–). Remove the foreign matter and adjust the line flow fan. * If more than 12 seconds passes after the emergency operation switch is pressed, the voltage measured at 2.
  • Page 30 MSZ-GL24NA MSY-GL24NA 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. Turn ON the power supply, wait 5 seconds or more, and then press the emergency operation switch.
  • Page 31 B Check of remote controller and indoor electronic control P.C. board *Check if the remote controller is exclusive for this air conditioner. MSZ-GL06/09/12/15/18NA MSY-GL09/12/15/18NA Press OFF/ON (stop/operate) button *1 Look at the image of the signal transmitting section of on the remote controller. the remote controller through the monitor of a digital camera or a camera phone.
  • Page 32 C Check of indoor P.C. board and indoor fan motor MSZ-GL06/09/12/15NA MSY-GL09/12/15NA Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane Measure the resistance between Short circuit: motor connector CN151 from the indoor CN211 of the indoor fan motor Replace the indoor fan motor.
  • Page 33 MSZ-GL18NA MSY-GL18NA Turn OFF the power supply. Remove indoor fan motor connector CN211 from indoor power P.C. board and vane Measure the resistance between Short/ open circuit: motor connector CN151 from the indoor CN211 of the indoor fan motor Replace the indoor fan motor. electronic control P.C.
  • 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 D How to check miswiring and serial signal error MSZ-GL06/09/12/15NA Turn OFF the power supply. MSY-GL09/12/15NA Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring.
  • Page 36 MSZ-GL18/24NA MSY-GL18/24NA Turn OFF the power supply. Is there rated voltage in the power supply? Check the power supply. Turn ON the power supply. Is there rated voltage between outdoor terminal block S1 and S2? Check the wiring. Press the emergency operation switch once. Does the OPERATION INDICATOR lamp light up? <Confirmation of the power to the indoor unit>...
  • Page 37 E Electromagnetic noise enters into TV sets or radios Is the unit grounded? Ground the unit. Is the distance between the antennas Extend the distance between the antennas and and the indoor unit within 9.91 ft.(3 m), the indoor unit, and/or the antennas and the or is the distance between the antennas outdoor unit.
  • Page 38 9-7. Test point diagram and voltage MSZ-GL06NA - MSZ-GL09NA - MSZ-GL12NA - MSZ-GL15NA - MSY-GL09NA - MSY-GL12NA - MSY-GL15NA - 1. Indoor power P.C. board, Indoor terminal P.C. board Indoor terminal P.C. board Indoor power P.C. board Varistor (NR11) Resistor (R111)
  • Page 39 MSZ-GL06NA - MSZ-GL09NA - MSZ-GL12NA - MSZ-GL15NA - MSY-GL09NA - MSY-GL12NA - MSY-GL15NA - 3. Indoor power P.C. board, Indoor terminal P.C. board Indoor terminal P.C. board Indoor power P.C. board Resistor (R111) Varistor (NR11) Indoor fan motor (CN211) (+)0-6 V...
  • Page 40 MSZ-GL18NA MSY-GL18NA 5. Indoor power P.C. board Connector to indoor electronic 12 V DC 5 V DC control P.C. board (CN20A) Connector to Terminal block (CN201) Fuse (F11) T3.15AL250V Varistor (NR11) Connector to Indoor fan motor (CN211) Resistor (R111) 294/325 V DC (+)0 or 15 V DC (-) GND (High (+)3-6 V DC...
  • Page 41 MSZ-GL24NA MSY-GL24NA 7. Indoor terminal P.C. board, Indoor electronic control P.C. board, Power monitor receiver SW P.C. board Indoor terminal P.C. board Indoor electronic control P.C. board To disable "Auto restart func- tion" cut the Jumper wire to Terminal Varistor Resistor Fuse 12 V DC...

  • Page 42: Disassembly Instructions

    Locking lever lever. Connector 10-1. MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA MSY-GL09NA MSY-GL12NA MSY-GL15NA : Indicates the visible parts in the photos/figures. NOTE: Turn OFF the power supply before disassembly. : Indicates the invisible parts in the photos/figures.
  • Page 43 OPERATING PROCEDURE PHOTOS/FIGURES 2. Removing the indoor electronic control P.C. Photo 2 Electrical box Ground wire board and the room temperature thermistor (1) Remove the panel (Refer to section 1.) and the corner box. (2) Remove the screw of the V.A. clamp and the V.A. Screw of the clamp.
  • Page 44 OPERATING PROCEDURE PHOTOS/FIGURES 4. Removing the nozzle assembly Photo 5 (1) Remove the panel (Refer to section 1.) and the corner box. (2) Remove the indoor/outdoor connecting wire (Refer to section 2 (2)-(7).). (3) Remove the indoor electronic control P.C. board holder. (4) Pull out the drain hose from the nozzle assembly and remove the nozzle assembly.
  • Page 45 OPERATING PROCEDURE PHOTOS/FIGURES 6. Removing the indoor fan motor, the indoor coil Photo 6 thermistor, and the line flow fan (1) Remove the panel (Refer to section 1.) and the corner box. (2) Remove the indoor electronic control P.C. board holder, the electrical box and the nozzle assembly.
  • Page 46 10-2. MSZ-GL18NA MSY-GL18NA 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 47 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 Screws of right corner box. the ground plate Water cover (2) Disconnect the following connectors: <Indoor electronic control P.C.
  • Page 48 OPERATING PROCEDURE PHOTOS/FIGURES 3. Removing the indoor electronic control P.C. board Photo 5 (1) Remove the panel. (Refer to section 1.) Remove the Control P.C. board holder (Inside) right corner box. Catch (2) Disconnect the following connectors: <Indoor electronic control P.C. board> Indoor electronic CN151 (Vane motor) control P.C.
  • Page 49 OPERATING PROCEDURE PHOTOS/FIGURES 5. 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 right corner box. (2) Remove the control P.C. board holder, the water cover, the electrical box and the nozzle assembly.
  • Page 50 10-3. MSZ-GL24NA MSY-GL24NA NOTE: Turn OFF the power supply before disassembly. OPERATING PROCEDURE PHOTOS/FIGURES 1. Removing the panel Photo 1 (1) Remove the horizontal vanes. (2) Remove the screw caps of the panel. Remove the Front panel Horizontal vanes screws of the panel. (3) Hold the lower part of both ends of the panel and pull it slightly toward you, and then remove the panel by pushing it upward.
  • Page 51 OPERATING PROCEDURE PHOTOS/FIGURES 4. Removing the nozzle assembly Photo 4 (1) Remove the panel (Refer to section 1.) and the right corner box. (2) Remove the V.A. clamp, and then the indoor/outdoor connecting wire. (Refer to section 2 (2)-(4).) (3) Remove the electrical cover. (Photo 2) (4) Disconnect the following connectors on the electronic control P.C.
  • Page 52 OPERATING PROCEDURE PHOTOS/FIGURES 7. Removing the water cut, the indoor fan motor, the Photo 8 indoor coil thermistor, and the line flow fan (1) Remove the panel (Refer to section 1.) and the right corner box. (2) Remove the power monitor receiver holder, the electrical box and the nozzle assembly.
  • Page 53 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 54 HEAD OFFICE: TOKYO BUILDING, 2-7-3, MARUNOUCHI, CHIYODA-KU, TOKYO 100-8310, JAPAN © Copyright 2015 MITSUBISHI ELECTRIC CORPORATION Issued: Feb. 2022. No. OBH732 REVISED EDITION-D Issued: Jun. 2017. No. OBH732 REVISED EDITION-C Issued: Mar. 2016. No. OBH732 REVISED EDITION-B Issued: Nov. 2015. No. OBH732 REVISED EDITION-A Published: Sep.

This manual is also suitable for:

Msz-gl09naMsz-gl12naMsz-gl15naMsz-gl18naMsz-gl24naMsy-gl09na ... Show all

Table of Contents