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CONTENTS

1. TECHNICAL CHANGES ··································· 3

2. PART NAMES AND FUNCTIONS ····················· 4

3. SPECIFICATION ················································ 5

4. OUTLINES AND DIMENSIONS ························ 6

5. WIRING DIAGRAM ············································ 7

6. REFRIGERANT SYSTEM DIAGRAM ··············· 8

7. SERVICE FUNCTIONS ····································· 9

8. MICROPROCESSOR CONTROL ····················11

9. TROUBLESHOOTING ····································· 20

10. DISASSEMBLY INSTRUCTIONS ···················· 32

INDOOR UNIT

SERVICE MANUAL

INDOOR UNIT

Models

MSZ-FH06NA
MSZ-FH09NA
MSZ-FH12NA
MSZ-FH15NA
MSZ-FH18NA
MSZ-FH18NA2

NOTE:

RoHS compliant products have <G> mark on the spec name plate.

No. OBH683

REVISED EDITION-D

Please void OBH683 REVISED EDITION-C.

Revision D:

• MSZ-FH06NA and MSZ-FH18NA2 have been

added.

PARTS CATALOG (OBB683)

Outdoor unit service manual
MUZ-FH·NA(H) Series (OBH684)
MXZ-C

•

NA,NAHZ Series (OCH573)

Содержание MSZ-FH06NA

Страница 1: ...10 DISASSEMBLY INSTRUCTIONS 32 INDOOR UNIT SERVICE MANUAL INDOOR UNIT Models MSZ FH06NA MSZ FH09NA MSZ FH12NA MSZ FH15NA MSZ FH18NA MSZ FH18NA2 NOTE RoHS compliant products have G mark on the spec name plate No OBH683 REVISED EDITION D Please void OBH683 REVISED EDITION C Revision D MSZ FH06NA and MSZ FH18NA2 have been added PARTS CATALOG OBB683 Outdoor unit service manual MUZ FH NA H Series OBH68...

Страница 2: ...l failure system malfunction unit breakdown or accidents caused by failure to follow the instructions Revision A 3 SPECIFICATION has been modified The value of the disconnect switch for MSZ FH15NA has been modified 8 MICROPROCESSOR CONTROL has been modified 9 TROUBLESHOOTING has been modified Revision B 4 OUTLINE AND DIMENSIONS has been modified The length of the connect pipes has been modified So...

Страница 3: ...3 TECHNICAL CHANGES 1 MSZ FH09NA MSZ FH12NA MSZ FH15NA 1 New model MSZ FH18NA 1 New model MSZ FH06NA MSZ FH18NA2 1 New model OBH683D ...

Страница 4: ...er 3 5 16 mm Black 2 Battery AAA for the remote controller 2 Wireless remote controller 1 Felt tape For left or left rear piping 1 Air cleaning filter Electrostatic anti allergy enzyme filter 1 Air cleaning filter Deodorizing filter 1 Operation indicator lamp Remote control receiving section Emergency operation switch Horizontal vane Air inlet Air filter Nano platinum filter Air cleaning filter El...

Страница 5: ... 342 261 190 143 117 411 355 304 262 225 354 305 261 225 194 437 355 304 262 225 376 305 261 225 194 459 355 304 262 225 395 305 261 225 194 HEAT Dry CFM 437 325 225 167 140 437 325 225 167 140 454 325 225 167 140 497 394 317 254 201 514 394 317 254 201 514 394 317 254 201 Moisture removal pt h 0 2 0 6 1 9 4 0 5 1 4 8 Sound level Super high High Med Low Quiet Cooling dB A 40 36 29 23 20 40 36 29 2...

Страница 6: ...6 Unit inch MSZ FH06NA MSZ FH09NA MSZ FH12NA MSZ FH15NA MSZ FH18NA MSZ FH18NA2 OUTLINES AND DIMENSIONS 4 MSZ FH06 09 12NA MSZ FH15 18NA 18NA2 OBH683D ...

Страница 7: ...7 MSZ FH06NA MSZ FH09NA MSZ FH12NA MSZ FH15NA MSZ FH18NA MSZ FH18NA2 WIRING DIAGRAM 5 OBH683D ...

Страница 8: ...flow in cooling Refrigerant flow in heating Unit inch mm REFRIGERANT SYSTEM DIAGRAM 6 MSZ FH06NA MSZ FH09NA MSZ FH12NA 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 R...

Страница 9: ...eaker ON the remote controller that first sends a signal to an indoor unit will be regarded as the remote controller for the indoor unit Once they are set the indoor unit will only receive the signal from the assigned remote controller afterwards SERVICE FUNCTIONS 7 MSZ FH06NA MSZ FH09NA MSZ FH12NA MSZ FH15NA MSZ FH18NA MSZ FH18NA2 7 3 SETTING THE INSTALLATION POSITION Be sure to set the remote co...

Страница 10: ...d when 10 seconds have passed after the indoor unit was operated with the remote controller If main power is turned OFF or a power failure occurs while AUTO START STOP timer is active the timer setting is can celled If the unit has been off with the remote controller before power failure the auto restart function does not work as the power button of the remote controller is OFF To prevent breaker ...

Страница 11: ...button Lid Slide the lid down to open the remote controller Slide it down further to get to the weekly timer buttons WEEKLY TIMER set buttons TIME TIMER set buttons FORWARD button BACKWARD button RESET button SMART SET button NATURAL FLOW button SENSOR i see button VANE CONTROL button WIDE VANE button INDOOR UNIT DISPLAY SECTION Operation Indicator lamp The operation indicator at the right side of...

Страница 12: ...de temperature operation works the same way as that in COOL mode 8 1 2 8 3 FAN OPERATION 1 OPERATION INDICATOR lamp of the indoor unit turns on with a beep tone 2 Select FAN mode with OPERATION SELECT button 3 Select the desired fan speed When AUTO it becomes Low Only indoor fan operates Outdoor unit does not operate 8 1 COOL OPERATION 1 Press STOP OPERATE OFF ON button OPERATION INDICATOR lamp of...

Страница 13: ...t temperature So even though the set temperature is higher the air conditioner can keep comfort As a result energy can be saved To cancel this operation select a different mode or press one of the following buttons in ECONO COOL operation ECONO COOL VANE CONTROL POWERFUL or NATURAL FLOW button Horizontal position 4 In COOL and DRY operation Vane angle is fixed to Horizontal position In HEAT operat...

Страница 14: ...OL button the vertical vane swings horizontally The remote controller displays Swing mode is cancelled when WIDE MODE CONTROL button is pressed once again 8 7 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 12 00 AM blinks at the current time display of TIME MONITOR so set the current...

Страница 15: ...in after the simple ON OFF timer is complete When the weekly timer is set temperature can not be set to 50 F 10 C The weekly timer operation and SMART SET operation cannot be used together Example 1 The current time is 8 00 PM The unit turns off at 11 00 PM and on at 6 00 AM OFF timer and ON timer can be used in combination The set time that is reached first will operate first and display shows th...

Страница 16: ...lected All days can be selected 1 How to set the weekly timer Press and buttons to continue setting the timer for other days and or numbers NOTE Press button to transmit the setting information of weekly timer to the indoor unit Point the remote controller toward the indoor unit for 3 seconds When setting the timer for more than one day of the week or one number button does not have to be pressed ...

Страница 17: ...ber 3 Press button to exit the weekly timer setting NOTE When all days of the week are selected to view the settings and a different setting is included among them will be displayed 5 Press button to turn the weekly timer ON lights When the weekly timer is ON the day of the week whose timer setting is complete will light Press button again to turn the weekly timer OFF goes out NOTE The saved setti...

Страница 18: ...tion and the weekly timer operation cannot be used together 2 How to cancel operation Press SMART SET button again SMART SET operation can also be cancelled by pressing OPERATION SELECT button to change the operation mode The same setting is select from the next time by simply pressing SMART SET button 8 10 INDIRECT DIRECT MODE The INDIRECT DIRECT mode offers finely tuned operation by locating whe...

Страница 19: ...ration the horizontal vane operates in VANE AUTO mode Emergency operation continues until 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 EMERGENCY OPERATION switch during normal operation Operation mode COOL HEAT Set temperature 75 F 24 C Fan speed Med Horizontal vane Au...

Страница 20: ...2 Before servicing check that the connector and terminal are connected properly 3 When the electronic control 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 malfunction In this case replace the b...

Страница 21: ...lure mode recall function mentioned above Press STOP OPERATE OFF ON button of the remote controller the set temperature is displayed with the remote controller headed towards the indoor unit Press EMERGENCY OPERATION switch so that the memorized abnormal condition is deleted Release the failure mode recall function according to Releasing the failure mode recall function men tioned above Yes Blinks...

Страница 22: ... emitted for 12 seconds after the indoor fan motor is operated Refer to 9 6 Check of indoor fan motor 12 time flash 2 5 second OFF Indoor control system It cannot properly read data in the nonvolatile memory of the indoor electronic control P C board Replace the indoor electronic control P C board NOTE Blinking patterns of this mode differ from the ones of TROUBLESHOOTING CHECK TABLE 9 4 3 Operati...

Страница 23: ...lash on and off at 0 5 sec ond intervals Cause Indoor Outdoor unit Miswiring or trouble of serial signal LEFT lamp 2 time flash Cause Indoor unit Trouble of room temperature indoor coil thermistor LEFT lamp 3 time flash Cause Indoor unit Trouble of indoor fan motor LEFT lamp 4 time flash Cause Indoor unit Trouble of indoor unit control system LEFT lamp 5 time flash Cause Outdoor unit Outdoor power...

Страница 24: ...the indoor electronic control P C board 5 Outdoor power sys tem LEFT lamp flashes 5 time flash 2 5 second OFF It consecutively occurs 3 times that the com pressor stops for overcurrent protection or start up failure protection within 1 minute after start up Refer to How to check of in verter compressor Refer to outdoor unit service manual Check the stop valve 6 Outdoor thermistors LEFT lamp flashe...

Страница 25: ...6 Check of indoor fan motor Vane motor MV1 HORIZONTAL Measure the resistance between the terminals with a tester Temperature 50 86 F 10 30 C Color of the lead wire Normal RED SKY 262 328 Ω Vane motor MV2 VERTICAL Measure the resistance between the terminals with a tester Temperature 50 86 F 10 30 C Color of the lead wire Normal RED SKY 219 273 Ω i see SENSOR MOTOR MT Measure the resistance between...

Страница 26: ...essed the voltage measured at 2 above goes 0 VDC although the indoor P C board is normal Does the voltage between CN211 and on the power P C board rise to the range of 3 to 6 VDC within 12 seconds after EMERGENCY 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 Me...

Страница 27: ...controller Refer to 7 2 Check if the unit operates with the remote controller Does the unit operate with the remote controller Yes No OK Measure the voltage between receiver P C board connector CN301 No 1 and No 3 when the remote controller button is pressed Is the voltage approximately 4 VDC 5 VDC No Yes Replace the indoor electronic control P C board 1 Look at the image of the signal transmittin...

Страница 28: ...oard No No Replace the indoor power 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 tester to fan motor connector s lead wire and to lead wire oth...

Страница 29: ...er P C board repeat 3 6 second OFF and 0 8 second ON quick blinking 3 Yes No Lighted or not lighted Replace the inverter P C board 2 2 Be careful of the residual voltage of smoothing capacitor Is there amplitude of 10 to 20 VDC between the indoor terminal block S2 and S3 Confirmation of serial signal Yes Check the wiring If there are any errors of the indoor outdoor connecting wire such as the dam...

Страница 30: ... strength or the installation condition combination of specific conditions such as antennas or wiring Check the following 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 31: ...y operation switch E O SW SW1 Connector to indoor power P C board CN102 Indoor coil thermistor RT12 RT13 CN112 Indoor power P C board Indoor electronic control P C board Receiver board Display board Switch board MSZ FH06NA MSZ FH09NA MSZ FH12NA MSZ FH15NA MSZ FH18NA MSZ FH18NA2 9 7 TEST POINT DIAGRAM AND VOLTAGE 5 VDC 5 VDC i see SENSOR MOTOR MT i see SENSOR pin pin pin pin CN110 Vane motor MV1 ho...

Страница 32: ... connector has the locking mechanism Slide the sleeve Pull the terminal while pushing the locking lever Hold the sleeve and pull out the terminal slowly Connector Sleeve Locking lever Terminal with locking mechanism Detaching points The terminal which has the locking mechanism can be detached as shown below There are 2 types Refer to 1 and 2 of the terminal with locking mechanism The terminal with...

Страница 33: ...r connecting wire 8 Remove the ground wire connected to the indoor heat exchanger from the electrical box 9 Remove the screw fixing the electrical box then the upper catch of the electrical box and pull out the electrical box When installing the electrical box pass the lead wire from the fan motor through Photo 10 and Photo 4 so that it will not be pinched under the electrical box Photo 3 Photo 4 ...

Страница 34: ...02 To the indoor electronic control P C board 5 Remove the lead wire holder 6 Remove the indoor power P C board 7 Disconnect the following connectors Indoor electronic control P C board CN111 Room temperature thermistor CN112 Indoor coil thermistor 8 Unhook the catches of the DISPLAY AND i see SENSOR ASSEMBLY from the electrical box right side 9 Unhook the catch of the rear cover of the DISPLAY AN...

Страница 35: ...l vane motor unit and pull out the vertical vane motor unit 3 Remove the screws of the vertical vane motor unit cover 4 Disconnect the connector from the vertical vane motor 5 Remove the vertical vane motor from the vertical motor unit cover 6 Removing the horizontal vane motor 1 Remove the nozzle assembly Refer to 4 2 Remove the screws of the horizontal vane motor unit and pull out the horizontal...

Страница 36: ...ndoor fan motor 8 Remove the indoor coil thermistor from the heat exchanger Install the indoor coil thermistor in its former position when assembling it Photo 10 9 Remove the screws fixing the left side and the 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 line flow fan so 4 mm gap is pr...

Страница 37: ...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 38: ... in Oct 2015 No OBH683 REVISED EDITION D Distributed in Dec 2014 No OBH683 REVISED EDITION C Distributed in Jul 2014 No OBH683 REVISED EDITION B Distributed in Apr 2014 No OBH683 REVISED EDITION A Distributed in Feb 2014 No OBH683 Made in Japan New publication effective Oct 2015 Specifications are subject to change without notice ...

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