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REFRIGERANT SYSTEM DIAGRAM

MSZ-GL18NA

MSY-GL18NA

Unit: inch (mm)

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø1/2 (ø12.7)

(with heat insulator)

Refrigerant pipe ø1/4 (ø6.35)

(with heat insulator)

Indoor coil

thermistor

RT12 (main)

Indoor coil

thermistor

RT13 (sub)

Refrigerant flow in cooling

Refrigerant flow in heating

MSZ-GL24NA

MSY-GL24NA

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø5/8 (ø15.88)

(with heat insulator)

Refrigerant pipe ø3/8 (ø9.52)

(with heat insulator)

Indoor coil

thermistor

RT12 (main)

Indoor coil

thermistor

RT13 (sub)

Refrigerant flow in cooling

Refrigerant flow in heating

Indoor

heat

exchanger

Flared connection

Room temperature

thermistor

RT11

Flared connection

Refrigerant pipe ø3/8 (ø9.52) (

MSZ-GL06/09/12NA, MSY-GL09/12NA

)

ø1/2 (ø12.7) (

MSZ-GL15NA, MSY-GL15NA

)

(with heat insulator)

Refrigerant pipe ø1/4 (ø6.35)

(with heat insulator)

Indoor coil

thermistor

RT12 (main)

Indoor coil

thermistor

RT13 (sub)

Refrigerant flow in cooling

Refrigerant flow in heating

MSZ-GL06NA MSZ-GL09NA MSZ-GL12NA MSZ-GL15NA

MSY-GL09NA MSY-GL12NA MSY-GL15NA

OBH732D

Содержание MSY-GL09NA

Страница 1: ...N 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 No OBH732 REVISED EDITION D Outdoor unit service manual MUZ GL NA MUY GL NA Series OBH733 MXZ C NA MXZ C NAHZ Series OCH573 PARTS CATALOG OBB732 INDOOR UNIT Revision D MSZ GL06 09 12 15NA U2 and MSY GL09 12 15NA U...

Страница 2: ...ec 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 Preparation before the repair service Prepare the proper tools Prepare the proper protectors Provide adequate ventilation After stopping the operation of the air conditioner turn off the power supply breaker and pull...

Страница 3: ...lter Anti Allergy Enzyme Filter 2 PART NAMES AND FUNCTIONS MSZ GL06NA MSZ GL09NA MSZ GL12NA MSZ GL15NA MSY GL09NA MSY GL12NA MSY GL15NA ACCESSORIES Installation plate 1 Attachment screws for the installation plate 4 25 mm 5 Remote controller holder 1 Screws for 3 5 16 mm Black 2 Battery AAA for remote controller 2 Wireless remote controller 1 Felt tape For left or left rear piping 1 Air cleaning f...

Страница 4: ...A for remote controller 2 Wireless remote controller 1 Felt tape Used for left or left rear piping 1 Air cleaning filter 2 Remote controller Operation indicator lamp Remote control receiving section Emergency operation switch Horizontal vane Air outlet Air ﬁlter Nano platinum ﬁlter Air inlet Front panel Air cleaning ﬁlter Anti Allergy Enzyme Filter Heat exchanger OBH732D ...

Страница 5: ...ration indicator lamp Remote control receiving section Emergency operation switch MSZ GL24NA MSY GL24NA ACCESSORIES Installation plate 1 Installation plate fixing screw 4 25 mm 7 Remote controller holder 1 Fixing screw for 3 5 16 mm Black 2 Battery AAA for remote controller 2 Wireless remote controller 1 Felt tape Used for left or left rear piping 1 Air cleaning filter 2 OBH732D ...

Страница 6: ... 1 010 900 770 Heating MSZ rpm 1 140 950 810 690 600 1 170 1 050 910 780 640 1 300 1 140 1 010 900 730 Cond drain connection O D in 5 8 Dimensions W in 31 7 16 36 5 16 43 5 16 D 9 1 8 9 13 16 9 3 8 H 11 5 8 12 12 13 16 Weight Ib 22 28 37 External finish Munsell 1 0Y 9 2 0 2 Control voltage by built in transformer 12 24 V DC NOTE Test conditions are based on AHRI 210 240 Indoor model MSZ GL06NA MSZ...

Страница 7: ... properly at the High speed position The coverage should be used only as a general guideline since it varies accord ing to the size of the room and furniture arranged inside the room Model Mode Function Airflow CFM Air speed ft s Coverage ft MSZ GL06NA HEAT Dry 406 20 6 29 5 COOL Dry 321 16 3 23 5 Wet 286 14 5 21 0 MSZ GL09NA MSY GL09NA HEAT Dry 406 20 6 29 5 COOL Dry 321 16 3 23 5 Wet 286 14 5 21...

Страница 8: ...6 1 8 8 7 8 8 7 8 3 11 16 8 3 4 10 3 8 2 5 16 15 7 8 8 11 16 3 11 16 7 8 1 7 16 Oblong hole 7 16 13 16 Oblong hole Installation plate Indoor unit Wall hole Ø3 Air in Installation plate 8 1 16 15 3 16 1 5 8 8 11 16 3 1 11 16 2 9 16 2 9 16 4 1 2 5 3 4 1 4 Air out Piping Drain hose 3 15 16 MSZ GL06NA MSZ GL09NA MSZ GL12NA MSZ GL15NA MSY GL09NA MSY GL12NA MSY GL15NA Piping Insulation ø1 3 8 O D Liquid...

Страница 9: ...9 MSZ GL24NA MSY GL24NA Unit inch OBH732D ...

Страница 10: ... DIAGRAM MSZ GL06NA U1 MSZ GL09NA U1 MSZ GL12NA U1 MSZ GL15NA U1 MSY GL09NA U1 MSY GL12NA U1 MSY GL15NA U1 MSZ GL06NA U2 MSZ GL09NA U2 MSZ GL12NA U2 MSZ GL15NA U2 MSY GL09NA U2 MSY GL12NA U2 MSY GL15NA U2 OBH732D ...

Страница 11: ...11 MSZ GL18NA MSY GL18NA MSZ GL24NA MSY GL24NA OBH732D ...

Страница 12: ...nection Refrigerant pipe ø5 8 ø15 88 with heat insulator Refrigerant pipe ø3 8 ø9 52 with heat insulator Indoor coil thermistor RT12 main Indoor coil thermistor RT13 sub Refrigerant flow in cooling Refrigerant flow in heating Indoor heat exchanger Flared connection Room temperature thermistor RT11 Flared connection Refrigerant pipe ø3 8 ø9 52 MSZ GL06 09 12NA MSY GL09 12NA ø1 2 ø12 7 MSZ GL15NA MS...

Страница 13: ...NOTE For modification take out the batteries and press the OFF ON stop operate button 2 or 3 times at first After finish modification put back the batteries then press the RESET button J2 J1 Table 1 1 unit operation 2 units operation 3 units operation 4 units operation No 1 unit No modification Same as at left Same as at left Same as at left No 2 unit Solder J1 SJ1 Same as at left Same as at left ...

Страница 14: ... the units to start one by one 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 Operation If the main power has been cut the operation...

Страница 15: ...SY GL15NA U1 MSZ GL06NA U2 MSZ GL09NA U2 MSZ GL12NA U2 MSZ GL15NA U2 MSY GL09NA U2 MSY GL12NA U2 MSY GL15NA U2 Indication of remote controller model is on back Distance of signal About 20 ft 6 m Beep s is are heard from the indoor unit when the signal is received On timer button CLOCK button TIME set buttons forward button backward button Off timer button RESET button SMART SET button VANE control...

Страница 16: ...th beeps MSZ GL24NA MSY GL24NA MSZ GL18NA MSY GL18NA On timer button CLOCK button TIME set buttons forward button backward button Off timer button RESET button SMART SET button VANE control button WIDE VANE button Vertical vane button Signal transmitting section Operation display section Temperature buttons OFF ON STOP OPERATE button Fan speed control button Operation select button ECONO COOL butt...

Страница 17: ...e setting range is 61 88 F 16 31 C 1 Cold air prevention control When the compressor is not operating or is starting and the temperature of indoor heat exchanger and or the room tempera ture is low or when defrosting is being done the indoor fan will stop or rotate in Very Low speed 2 High pressure protection The compressor operational frequency is controlled by the temperature of the indoor heat ...

Страница 18: ...th AUTO operation from OFF If the room temperature is higher than the set temperature operation starts in COOL mode If the room temperature is equal to or lower than the set temperature operation starts in HEAT mode 2 Mode change COOL mode changes to HEAT mode when about 15 minutes have passed with the room temperature 2 F 1 C below the set temperature HEAT mode changes to COOL mode when about 15 ...

Страница 19: ... During COOL or DRY operation with the vane angle at Angle 4 or 5 when the compressor cumulative operation time exceeds 1 hour the vane angle automatically changes to Angle 1 for dew prevention 7 SWING mode By selecting SWING mode with VANE control button the horizontal vane swings vertically 8 Cold air prevention in HEAT operation MSZ The horizontal vane position is set to Upward NOTE When 2 or m...

Страница 20: ... 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 AM blinks at the current time display of TIME MONITOR so set the current time correctly with CLOCK button How to set the current time a Press the CLOCK set button b Press the TIME set buttons and and to set the current time Each time forward button ...

Страница 21: ...d when power is restored 8 9 SMART SET OPERATION MSZ GL06 09 12 15 18NA MSY GL09 12 15 18NA 1 How to SET SMART SET operation 1 Press OFF ON stop operate button 2 Select COOL HEAT MSZ mode 3 Press SMART SET button 4 Set the temperature fan speed and airflow direction for SMART SET operation NOTE SMART SET operation cannot be selected during DRY or AUTO mode operation The setting range of HEAT mode ...

Страница 22: ... or emergency operation the horizontal vane oper ates in VANE AUTO mode Emergency operation continues until the emergency operation switch is pressed once or twice or the unit receives any signal from the remote controller In the latter case normal operation will start NOTE Do not press the emergency operation switch during normal operation 8 11 3 MINUTE TIME DELAY OPERATION When the system turns ...

Страница 23: ...nking ON and OFF before starting ser vice work 2 Before servicing check that the connector and terminal are connected properly 3 When the P C board seems to be defective check the copper foil pattern for disconnection and the components for bursting and discoloration 4 When troubleshooting refer to 9 2 9 3 and 9 4 4 How to replace batteries Weak batteries may cause the remote controller malfunctio...

Страница 24: ...o 9 2 2 Make sure to check at least 2 consecutive blinking cycles 2 Releasing the failure mode recall function Release the failure mode recall function by the following procedures Turn OFF the power supply and turn it ON again Press RESET button of the remote controller The outdoor unit is abnormal Check the blinking pattern and identify the abnormal point by referring to the table of outdoor unit...

Страница 25: ...stics of the main indoor coil thermistor the sub indoor coil thermistor 9 7 3 time blink 2 5 second OFF Serial signal The serial signal from outdoor unit is not received for a maximum of 6 minutes Refer to 9 6 How to check miswiring and serial sig nal error 11 time blink 2 5 second OFF Indoor fan motor The rotational frequency feedback signal is not emitted for 12 seconds after the indoor fan moto...

Страница 26: ...k ON and OFF at 0 5 second intervals Cause Indoor Outdoor unit Miswiring or trouble of serial signal Upper lamp 2 time blink Cause Indoor unit Trouble of room tem perature indoor coil thermistor Upper lamp 3 time blink Cause Indoor unit Trouble of indoor fan motor Upper lamp 4 time blink Cause Indoor unit Trouble of indoor unit control system Upper lamp 5 time blink Cause Outdoor unit Outdoor powe...

Страница 27: ...onic control P C board Replace the indoor electronic control P C board 5 Outdoor power system Upper lamp blinks 5 time blink 2 5 second OFF It consecutively occurs 3 times that the com pressor stops for overcurrent protection or startup failure protection within 1 minute after startup Refer to How to check of inverter compressor Refer to outdoor unit service manual Check the stop valve 6 Outdoor t...

Страница 28: ...Room temperature thermistor RT11 Indoor coil thermistor RT12 RT13 Measure the resistance with a multimeter Refer to 9 7 Test point diagram and voltage 1 or 2 Indoor electronic control P C board for the chart of thermistor Indoor fan motor MF Check 9 6 MSZ GL06 09 12 15NA MSY GL09 12 15NA Vane motor MV Measure the resistance between the terminals with a multimeter Temperature 50 86 F 10 30 C Color ...

Страница 29: ... voltage between CN211 and on the power P C board rise to the range of 3 to 6 V DC within 12 seconds after the emer gency operation switch is pressed Replace the indoor fan motor Yes No The indoor fan motor error has occurred and the indoor fan repeats 12 second ON and 30 second OFF 3 times and then stops Measure the voltage between CN211 and while the fan motor is rotating Replace the indoor powe...

Страница 30: ...e the voltage between CN211 and If more than 12 seconds passes after the emergency operation switch is pressed the voltage measured at 2 above goes 0 V DC although the indoor P C board is normal Does the voltage between CN211 and on the indoor electronic control P C board rise to the range of 3 to 6 V DC within 12 seconds after the emergency operation switch is pressed Replace the indoor fan motor...

Страница 31: ...n receiving part Measure the voltage between power monitor receiver SW P C board connector CN20A No 2 and No 3 when the remote controller button is pressed Refer to 9 7 5 Is the voltage approximately 4 V DC No Yes Replace indoor electronic control P C board Replace power monitor receiver SW P C board 1 Look at the image of the signal transmitting section of the remote controller through the monito...

Страница 32: ...nce of resistor R111 approximately 4 Ω No Replace the indoor power P C board the indoor terminal P C board and the indoor fan motor Replace the indoor electronic control P C board Measure the resistance of the vane motor coil Refer to 9 5 Short circuit Replace the vane motor and the indoor electronic control P C board 1 The fan motor connector s lead wire is red whereas is black 2 Connect of the m...

Страница 33: ...indoor electronic control P C board Measure the resistance of the vane motor coil Refer to 9 5 Short open circuit Replace the vane motor and the indoor electronic control P C board 1 The fan motor connector s lead wire is red whereas is black 2 Connect of the multimeter to fan motor connector s lead wire and to lead wire otherwise the resistance cannot be measured properly 3 Please replace the fus...

Страница 34: ...asure the resistance between CN211 and of the indoor fan motor connector Short open circuit Replace the indoor fan motor Short open circuit Replace the horizontal vane motor and the indoor electronic control P C board Turn OFF the power supply Check both parts side and pattern side of the indoor electronic control P C board visually Replace the varistor NR11 and fuse F11 3 Are the varistor NR11 bu...

Страница 35: ...k blinking 3 Yes No Lit or not lit Replace the inverter P C board or the outdoor electronic control P C board 2 2 Be careful of the residual voltage of smoothing capacitor Is there amplitude of 10 to 20 V DC between indoor terminal block S2 and S3 Confirmation of serial signal Yes Check the wiring If there are any error of the indoor outdoor connecting wire such as the damage of the wire intermedi...

Страница 36: ...C board or the outdoor electronic control P C board repeat 3 6 second OFF and 0 8 second ON quick blinking 3 Yes GL24 GL18 No Lit or not lir Replace the inverter P C board or the outdoor electronic control P C board 2 2 Be careful of the residual voltage of smoothing capacitor Turn OFF the power supply Remove the bridge between outdoor terminal block S2 and S3 Yes 3 Be sure to check this within 3 ...

Страница 37: ...strength or the installation condition combination of specific conditions such as antennas or wiring Check the followings before asking for service 1 Devices affected by the electromagnetic noise TV sets radios FM AM broadcast shortwave 2 Channel frequency broadcast station affected by the electromagnetic noise 3 Channel frequency broadcast station unaffected by the electromagnetic noise 4 Layout ...

Страница 38: ...V DC GND high voltage DC 294 325 V DC Timer short mode point Refer to 7 1 Room temperature thermistor RT11 CN111 Indoor coil thermistor RT12 RT13 CN112 Vane motor CN151 Connector to Indoor power P C board CN10A 12 V DC 5 V DC To disable Auto restart function solder the Jumper wire to JR07 Refer to 7 3 Emergency operation switch SW1 2 Indoor electronic control P C board GND Room temperature thermis...

Страница 39: ...h voltage DC 294 325 V DC Timer short mode point Refer to 7 1 Room temperature thermistor RT11 CN111 Indoor coil thermistor RT12 RT13 CN112 Vane motor CN151 Connector to Indoor power P C board CN10A 12 V DC 5 V DC To disable Auto restart function solder the Jumper wire to JR07 Refer to 7 3 Emergency operation switch SW1 4 Indoor electronic control P C board GND Room temperature thermistor RT11 Ind...

Страница 40: ...tor to Indoor fan motor CN211 Resistor R111 Connector to Terminal block CN201 3 6 V DC 15 V DC GND High voltage DC 294 325 V DC 0 or 15 V DC Timer short mode point Refer to 7 1 Room temperature thermistor RT11 CN111 Connector to Indoor coil therm istor RT12 RT13 CN112 Vane motor CN151 Connector to indoor power P C board CN10A 5V DC To disable Auto restart function cut the Jumper wire to JR77 Refer...

Страница 41: ... the electrical box Indoor terminal P C board Indoor electronic control P C board Power monitor receiver SW P C board Fuse F11 Varistor NR11 Terminal block Indoor fan motor CN211 325 V DC GND high voltage DC 15 V DC 3 6 V DC 0 or 15 V DC Resistor R111 Emergency operation switch SW1 To disable Auto restart func tion cut the Jumper wire to JR77 Refer to 7 3 Timer short mode point Refer to 7 1 Vane m...

Страница 42: ... with locking mechanism The terminal which has the locking mechanism can be detached as shown below There are 2 types of the terminal with locking mechanim The terminal without locking mechanism can be detached by pulling it out Check the shape of the terminal before detaching 1 Slide the sleeve and check if there is a locking lever or not 2 The terminal with this connector shown below has the loc...

Страница 43: ... electronic control P C board Photo 2 Photo 3 Photo 4 3 Removing the indoor power P C board the indoor terminal P C board and the electrical box 1 Remove the panel Refer to section 1 and the corner box 2 Remove the indoor outdoor connecting wire and the indoor electric control P C board holder Refer to section 2 2 8 3 Remove the screw of the conduit cover and the conduit cover 4 Remove the screw o...

Страница 44: ...ull out the drain hose from the nozzle assembly and remove the nozzle assembly Photo 5 5 Removing the horizontal vane motor 1 Remove the nozzle assembly Refer to section 4 2 Remove the screws of the horizontal vane motor unit 3 Disconnect the connector from the horizontal vane motor 4 Remove the screws of the horizontal vane motor 5 Remove the horizontal vane motor from the horizontal vane motor u...

Страница 45: ...e the indoor coil thermistor from the heat exchanger Install the indoor coil thermistor in its former position when assembling it Refer to Photo 9 9 Remove the screws fixing the left side of the heat exchanger 10 Lift the heat exchanger and pull out the line flow fan to the lower left When attaching the line flow fan screw the line flow fan so 5 32 inch 4 mm gap is provided between the right end o...

Страница 46: ...isassembly OPERATING PROCEDURE PHOTOS FIGURES 1 Removing the panel 1 Remove the screw caps on the panel and remove the screws of the panel 2 Pull the panel slightly toward you and then remove the panel by pushing it upward Photo 1 Screws of the panel Front panel OBH732D ...

Страница 47: ...e water cover and remove the water cover 12 Remove the screw of the electrical cover and remove the electrical cover 13 Disconnect the CN211 Indoor fan motor from the indoor power P C board 14 Remove the upper catch of the electrical box and pull out the electrical box To attach the electrical box pass the wires connecting the indoor power P C board and the indoor electronic control P C board thro...

Страница 48: ...ide of the control P C board holder 5 Unhook the catches of the control P C board holder and open the control P C board holder 6 Remove the indoor electronic control P C board from the control P C board holder 4 Removing the vane motor 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...

Страница 49: ...d and remove the motor band Pull out the indoor fan motor 8 Remove the indoor coil thermistor from the heat exchanger Install the indoor coil thermistor in its former position when assembling it 9 Remove the screws fixing the left side and upper right side of the heat exchanger 10 Lift the heat exchanger and pull out the line flow fan to the lower left When attaching the line flow fan screw the li...

Страница 50: ... monitor receiver holder and pull out the power monitor receiver SW P C board 9 Disconnect all the connectors on the indoor electronic control P C board and unhook all lead wires 10 Remove the screw of the terminal block on the indoor terminal P C board 11 Remove the indoor terminal P C board and the indoor electronic control P C board 3 Removing the indoor electrical box 1 Remove the panel Refer ...

Страница 51: ...the vertical vane 3 Remove the screw of the vertical vane motor unit and pull the vertical vane motor unit 4 Remove the screws of the vertical vane motor unit cover 5 Remove the crank of the vertical vane motor unit from the shaft of the vane motor 6 Remove the vertical vane motor from the vertical vane motor unit 7 Disconnect the connector of vertical vane motor from the vertical vane motor 6 Rem...

Страница 52: ... Pull out the indoor fan motor 9 Remove the indoor coil thermistor from the heat exchanger Install the indoor coil thermistor in its former position when assembling it 10 Remove the screws fixing the left side of the heat exchanger 11 Lift the heat exchanger and pull out the line flow fan to the lower left When attaching the line flow fan screw the line flow fan so 13 64 inch 5 mm gap is provided ...

Страница 53: ...ked position Do not pull the lead wire when removing the indoor coil thermistor Holder shape Clip shape When fixing the indoor coil thermistor to the clip shape holder shape part the lead wire should point down 1 Set the indoor coil thermistor in the center of the clip shape part 2 Check the marked mounting position 3 Mount the clip shape part Position and procedure for mounting the clip shape par...

Страница 54: ...ed 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 2015 No OBH732 Made in Japan Specifications are subject to change without notice HEAD OFFICE TOKYO BUILDING 2 7 3 MARUNOUCHI CHIYODA KU TOKYO 100 8310 JAPAN ...

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