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Replace LEV.
(coil defect)

Replace LEV.

Check of linear expansion valve (LEV)

• Press RESET button, while pressing OPERATION SELECT button on remote controller.

(All displays on operational display section are ON.)

• With remote controller set toward the indoor unit, press OPERATE/STOP(ON/OFF)

button and confirm one beep tone.

• With remote controller set toward the indoor unit, OPERATE/STOP(ON/OFF) button and

confirm two beep tones.

Confirm again
that LEV is
operating.

Replace outdoor
electronic control P.C.
board.

LEV operates in full-opening
direction.

· Is LEV connector connected?
· Is LEV coil properly fixed to the body?

Heating/Cooling do not operate.

Do you hear LEV "click,
click·······"?
Do you touch LEV and
feel it vibrate?

Does the resistance of

LEV coil

have the characteristics?

Do you hear LEV
"click, click·········"?

Yes

LEV (CN 724)
WHT(6)–RED(1)
RED(1)–ORE(4)
YLW(5)–BRN(2)
BRN(2)–BLU(3)

resistance

~56

Characteristics of LEV coil

❈

After you have followed the entire flow chart of "Check of linear expansion valve (LEV)", be sure to follow the procedure below.

Replace current limiting resistor.

Check of rush current limiting circuit

Outdoor unit does not operate or stops immediately due to overcurrent.

NOTE : When the current limiting resistor is open, the rush current limiting relay
may not be working properly. There fore confirm the limiting resistor
works properly after replacing it.

Does current limiting resistor detect 10

∞

Yes

Start

· Re-connect the connector.
· Properly fix LEV coil to the body.

Press EMERGENCY OPERATION switch.

Unplug the power cord and then plug it again.

Press RESET button on remote controller.

OB230-2.qxp 02.5.28 7:37 PM Page 53

Содержание MSZ-A09RV

Страница 1: ...AM 12 8 PERFORMANCE CURVES 13 9 MICROPROCESSOR CONTROL 23 10 SERVICE FUNCTIONS 38 11 TROUBLESHOOTING 40 12 DISASSEMBLY INSTRUCTIONS 57 13 PARTS LIST 61 MSZ A09RV WH MUZ A09RV MSZ A12RV WH MUZ A12RV E1 E1 E1 E1 Revision A number of drainage holes of MUZ A09RV and MUZ A12RV has been increased Compressors of MUZ A09RV and MUZ A12RV has been changed SNB092FBA SNB092FJAH SPECIFICATION OUTLINES AND DIME...

Страница 2: ...vious refrigerant R22 R22 100 Single refrigerant Included A1 86 5 40 8 0 94 44 4 Non combustible 0 055 1700 Gas phase Possible Compatible oil Light yellow Non Refrigerant Composition Ratio Refrigerant handling Chlorine Safety group ASHRAE Molecular weight Boiling point Steam pressure 25 Mpa Saturated steam density 25 Kg K Combustibility ODP w1 GWP w2 Refrigerant charge method Additional charge on ...

Страница 3: ...or details of flaring work refer to Installation manual 6 1 FLARING WORK R410A tools Can R22 tools be used Gas leak detector R410A pressures beyonds the measurement range of R22 gauges Port diameters have been changed to prevent other kinds of refrigerant from being charged into the units Hose material and cap size have been changed to improve the pressure resistance Dedicated for HFC refrigerant ...

Страница 4: ...siphon Liquid 3 Optional extension pipe for R410A 3 Refrigerant oil Apply the special refrigeration oil accessories to the flare and the union seat surfaces 4 Air purge Use the vacuum pump for air purging for the purpose of environmental protection 5 Additional charge For additional charging charge the refrigerant from liquid phase of the gas cylinder If the refrigerant is charged from the gas pha...

Страница 5: ...ton MIN button TIME SET button TEMPERATURE buttons VANE CONTROL button OFF TIMER button RESET button ON OFF TOO WARM TOO COOL HR MIN CLOCK RESET CLOCK MODE FAN VANE START STOP ECONO COOL button ECONO COOL I FEELCOOL DRY HEAT 600 1 100 AM PM SWING SWING button MUZ A09RV MUZ A12RV E1 E1 OUTDOOR UNIT Air inlet back and side Air outlet Drain outlet Piping Drain hose MSZ A09RV MSZ A12RV E1 E1 ...

Страница 6: ...324 6 850O278O191 10 5 3 10 10 10 MUZ A09RV E1 0 27 0 25 SNB092FJAH 700 U V 0 93 U W 0 93 V W 0 93 RA6V28 CA WHT BLK 197 BLK RED 315 YLW BLK 13 710 69 o540o255 34 2 1 10 450 NEO22 13 4 32 6 17 Cooling 2 6 0 9 3 3 516 1 2 3 67 3 37 800 250 1180 36 920 1440 6 9 3 25 45 670 Heating 3 6 0 9 4 8 540 4 55 4 17 990 250 1650 35 950 1530 7 4 3 64 47 700 MSZ A12RV E1 Single phase 220 240V 50Hz 10 99 7 25 6 ...

Страница 7: ...emiconductor relay Terminal block Relay compressor 52C Terminal block thermal Fuse Indoor fan motor thermal fuse Fuse F11 Smoothing capacitor C61 C62 Outdoor fan capacitor C65 Current transformer CT61 Fuse F801 F901 Reactor L64 Noise filter Current detecting resistor R61 62 64 Current limiting resistor R65 Terminal block Intelligent power module Relay X61 Relay X62 R V coil Power factor controll m...

Страница 8: ...ooling DB35 WB24 Heating DB 7 WB 6 MUZ A09RV E1 HEATING NOTCH 47 COOLING 45 SPL dB A LINE 90 80 70 60 50 40 30 20 10 63 125 250 500 1000 2000 4000 8000 APPROXIMATE TERESHOLD OF HEARING FOR CONTINUOUS NOISE NC 60 NC 50 NC 40 NC 30 NC 20 NC 70 OCTAVE BAND SOUND PRESSURE LEVEL dB re 0 0002 MICRO BAR BAND CENTER FREQUENCIES Hz Test conditions Cooling DB27 WB19 Heating DB20 WB MSZ A12RV E1 HEATING COOL...

Страница 9: ...d 6 35 Service panel Gas refrigerant pipe joint Refrigerant pipe flared 9 52 Service port Bolt pitch for installation Handle Air out Air in Drainage hole 28 4 holes 10o21 18 500 710 265 105 69 138 20 40 If both sides or back side is vacant only to be free 500mm in front of a unit Air in 265 REQUIRED SPACE If a front side or both sides is vacant an upper side of a unit has only to be vacant 100mm D...

Страница 10: ... P C BOARD 11 CN 1J1 REMOTE CONTROLLER POWER MONITOR RECEIVER P C BOARD 5 LD101T SYMBOL C11 F11 F12 HIC1 MF MV1 MV2 SYMBOL NR11 RT11 RT12 RT13 SYMBOL SR141 TB 52C NAME INDOOR FAN CAPACITOR FUSE 3 15A THERMAL FUSE 93 DC DC CONVERTER INDOOR FAN MOTOR VANE MOTOR HORIZONTAL VANE MOTOR VERTICAL NAME VARISTOR ROOM TEMPERATURE THERMISTOR INDOOR COIL THERMISTOR MAIN INDOOR COIL THERMISTOR SUB NAME SOLID S...

Страница 11: ... CT61 C61 C62 C65 DSA61 F801 F901 IC950 IPM LEV L61 SYMBOL L63 L64 MC MF61 NR61 PFC RT61 RT62 RT64 R61 62 SYMBOL R64 R65 SSR61 TB1 TB2 X61 X62 X64 21S4 NAME CURRENT TRANSFORMER SMOOTHING CAPACITOR OUTDOOR FAN CAPACITOR SURGE ABSORBER FUSE 2A FUSE 2A DC DC CONVERTER INTELLIGENT POWER MODULE EXPANSION VALVE COIL CMC COIL NAME COIL REACTOR COMPRESSOR OUTDOOR FAN MOTOR INNER FUSE VARISTOR POWER FACTOR...

Страница 12: ... way 9m 8m 60 30 Calculation Xg 30g m A 7 m Indoor heat exchanger Outdoor heat exchanger Distributor Flared connection Room temperature thermistor RT11 Indoor coil thermistor RT13 sub Defrost thermistor RT62 Discharge thermistor RT61 Flared connection Stop valve Stop valve with service port Capillary tube Capillary tube 2 pcs Refrigerant flow in cooling Compressor Accumulator Maffler Muffler 4 way...

Страница 13: ... the difference between the indoor intake air wet bulb temperature and the indoor discharge air wet bulb temperature for your reference at service How to measure the indoor air wet bulb temperature difference 1 Attach at least 2 sets of wet and dry bulb thermometers to the indoor air intake as shown in the figure and at least 2 sets of wet and dry bulb thermometers to the indoor air outlet The the...

Страница 14: ... 5 1 0 1 5 Correction of Cooling capacity Capacity correction factors The operational frequency of compressor Cooling capacity MUZ A09RV E1 MUZ A12RV E1 Correction of total input Capacity correction factors The operational frequency of compressor 0 50 100 150 Hz 0 5 1 0 1 5 2 0 Correction of total input Capacity correction factors The operational frequency of compressor 0 50 100 150 Hz 0 5 1 0 1 5...

Страница 15: ...erational frequency of compressor 0 50 100 150 Hz 0 0 0 5 1 0 1 5 Correction of Heating capacity Capacity correction factors The operational frequency of compressor Heating capacity Correction of total input Capacity correction factors The operational frequency of compressor 0 50 100 150 Hz 0 5 1 0 1 5 Correction of total input Capacity correction factors The operational frequency of compressor 0 ...

Страница 16: ... frequency 83Hz How to operate with fixed operational frequency of the compressor 1 Press the EMERGENCY OPERATION switch on the front of the indoor unit and select either the COOL mode or the HEAT mode before starting to operate the air conditioner 2 The compressor starts up The operational frequency of the compressor is 83Hz in the COOL mode and 58Hz in the HEAT mode 3 The fan speed of the indoor...

Страница 17: ...t A Ambient temperature HEAT operation Condition Indoor Dry bulb temperature 20 0 Wet bulb temperature 14 5 Outdoor Dry bulb temperature 2 7 15 20 0 Wet bulb temperature 1 6 12 14 5 58Hz 220V 240V 6 0 5 5 5 0 4 5 4 0 3 5 3 0 2 5 10 15 20 25 MUZ A09RV E1 Outdoor unit current A Ambient temperature ...

Страница 18: ... 832 3 33 1 06 0 32 856 28 18 3 06 2 57 0 84 640 2 93 2 46 0 84 672 2 81 2 36 0 84 704 2 70 2 27 0 84 736 28 20 3 19 2 29 0 72 672 3 06 2 20 0 72 712 2 96 2 13 0 72 728 2 86 2 06 0 72 760 28 22 3 32 1 99 0 60 696 3 20 1 92 0 60 740 3 12 1 87 0 60 760 2 99 1 79 0 60 792 28 24 3 48 1 67 0 48 728 3 35 1 61 0 48 768 3 28 1 57 0 48 792 3 17 1 52 0 48 832 28 26 3 59 1 29 0 36 768 3 48 1 25 0 36 808 3 43...

Страница 19: ...5 1 01 0 32 912 2 96 0 95 0 32 952 2 87 0 92 0 32 972 28 18 2 55 2 14 0 84 784 2 34 1 97 0 84 832 2 25 1 89 0 84 848 28 20 2 68 1 93 0 72 816 2 50 1 80 0 72 856 2 41 1 73 0 72 880 28 22 2 83 1 70 0 60 848 2 65 1 59 0 60 896 2 56 1 54 0 60 912 28 24 2 99 1 44 0 48 880 2 81 1 35 0 48 920 2 73 1 31 0 48 940 28 26 3 15 1 13 0 36 912 2 96 1 07 0 36 952 2 87 1 03 0 36 972 29 18 2 55 2 24 0 88 784 2 34 2...

Страница 20: ...62 0 39 1269 27 26 4 69 1 27 0 27 1171 4 56 1 23 0 27 1232 4 49 1 21 0 27 1269 4 35 1 18 0 27 1305 28 18 4 00 3 16 0 79 976 3 83 3 02 0 79 1025 3 67 2 90 0 79 1074 3 54 2 79 0 79 1122 28 20 4 17 2 79 0 67 1025 4 00 2 68 0 67 1086 3 88 2 60 0 67 1110 3 74 2 51 0 67 1159 28 22 4 34 2 38 0 55 1061 4 18 2 30 0 55 1129 4 08 2 24 0 55 1159 3 91 2 15 0 55 1208 28 24 4 56 1 96 0 43 1110 4 39 1 89 0 43 117...

Страница 21: ...1 11 0 27 1391 3 88 1 05 0 27 1452 3 76 1 01 0 27 1482 28 18 3 33 2 63 0 79 1196 3 06 2 42 0 79 1269 2 94 2 32 0 79 1293 28 20 3 50 2 35 0 67 1244 3 26 2 19 0 67 1305 3 15 2 11 0 67 1342 28 22 3 71 2 04 0 55 1293 3 47 1 91 0 55 1366 3 35 1 84 0 55 1391 28 24 3 91 1 68 0 43 1342 3 67 1 58 0 43 1403 3 57 1 54 0 43 1434 28 26 4 11 1 28 0 31 1391 3 88 1 20 0 31 1452 3 76 1 16 0 31 1482 29 18 3 33 2 77...

Страница 22: ... MSZ A09RV MUZ A09RV E1 E1 MSZ A12RV MUZ A12RV E1 E1 PERFORMANCE DATA HEAT operation PERFORMANCE DATA HEAT operation OUTDOOR WB INDOOR 10 5 0 5 10 15 20 DB Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT Q INPUT 15 2 27 644 2 74 772 3 20 871 3 67 941 4 14 1000 4 57 1030 5 04 1049 21 2 16 693 2 59 822 3 06 911 3 49 980 3 96 1030 4 39 1059 4 84 1099 26 1 94 743 2 41 871 2 84 960 3 31 1030 3 78 1079 ...

Страница 23: ...re displayed 1 When the room temperature or set temperature is out of the indication range If the set temperature is lower than 21 indicating lamp at 21 is lighting And if the room temperature is lower than 21 indicating lamp at 21 is blinking If the set temperature is higher than 30 indicating lamp at 30 is lighting And if the room temperature is higher than 30 indicating lamp at 30 is blinking G...

Страница 24: ...s determined according to the room temperature as the operation starts When the system is stopped with the OPERATE STOP ON OFF button on the remote controller and restarted within 2 hours in I FEEL CONTROL mode the system operates in previous mode automatically regardless of the room temperature Mode COOL mode of I FEEL CONTROL DRY mode of I FEEL CONTROL HEAT mode of I FEEL CONTROL Initial room te...

Страница 25: ...eed becomes High or the room temperature exceeds 26 time counting stops temporarily After when the above conditions are satisfied again time counting restarts The indoor fan operates at set speed 1 5 deg 4 deg 2 deg 1 deg Temperature difference Difference between room temperature and set tempera ture during operation Fan speed The operational frequency of the compressor is controlled based on the ...

Страница 26: ...rates at set speed 2 if the temperature of RT12 is less than 22 C and 1 if the temperature of room temperature thermistor RT11 is 15 C or less the fan stops 2 if the temperature of room temperature thermistor RT11 is more than 15 C the fan operates at Very Low NOTE At initial and after defrosting when the RT12 is from 18 to 22 Cold Air Prevention control works 3 Warm air control When the following...

Страница 27: ...peration time hereinafter referred to as defrost interval The first defrost interval is 40 minutes long and the second 45 minutes long The third and subsequent intervals are set to be longer and less frequent depending on defrosting time The third and subsequent defrost intervals follow any of the three patterns 5 or 10 minutes longer the same or 5 or 10 minutes shorter compared with the previous ...

Страница 28: ...button to select the desired temperature The setting range is 16 31 C 35 30 25 20 15 10 10 15 20 25 30 35 Set temperature Initial room temperature Set temperature and initial room temperature in dry mode Med High High Low 9 5 FAN MOTOR CONTROL 1 Rotational frequency feedback control The indoor fan motor is equipped with a rotational frequency sensor and outputs signal to the microprocessor to feed...

Страница 29: ... vane is once pressed to the vane stopper below to confirm the standard position and then set to the desired angle The positioning is decided as follows a When the OPERATE STOP ON OFF button is pressed POWER ON OFF b When the vane control is changed AUTO to MANUAL c When the SWING is finished d When the test run starts e When the power supply turns ON 4 VANE AUTO mode In VANE AUTO mode the micropr...

Страница 30: ...is pressed in COOL mode set temperature is automatically set 2 C higher than that in COOL mode Also the horizontal vane swings in various cycle according to the temperature of indoor heat exchanger RT12 SWING operation makes you feel cooler than set temperature So even though the set temperature is higher than that in COOL mode the air conditioner can keep comfort As a result energy can be saved E...

Страница 31: ...is set correctly NOTE Timer operation will not work without setting the current time Initially AM0 00 blinks at the current time display of TIME MONITOR so set the current time correctly with CLOCK SET button 3 Press ON or OFF TIMER buttons to select the operation button AUTO START operation ON timer button AUTO STOP operation OFF timer 4 Press HR and MIN button to set the timer Time setting is 10...

Страница 32: ...TION switch on the front of the indoor unit Emergency operation is available when the remote controller is missing has failed or the batteries of remote controller run down The unit will start and the POWER MONITOR lamp will light The first 30 minutes of operation is the test run operation This operation is for servicing The indoor fan speed runs at High speed and the system is in continuous opera...

Страница 33: ...ach operation mode w The maximum frequency in COOL mode is limited according to operation hours as shown below 2 Frequency change speed During increasing frequency During decreasing frequency Operational frequency MUZ A09RV E1 MUZ A12RV E1 10Hz to 14Hz 0 5 sec Hz 15Hz to 79Hz 5 sec Hz 80Hz to 150Hz 0 5 sec Hz Operational frequency MUZ A09RV E1 MUZ A12RV E1 10Hz to 42Hz 1 sec Hz 43Hz to 150Hz 0 5 s...

Страница 34: ...e approx 15 minutes after compressor stops Remote controller ON LEV is positioned first full closed at zero pulse and then positioned During 2 to 15 minutes after compressor starts Opening degree is adjusted according to standard opening degree Standard opening degree is set for each rotational frequen cy of compressor More than 15 minutes have passed since compressor start up LEV opening degree i...

Страница 35: ... compressor Commanded to open Standard opening degree Opening degree is corrected according to discharge temperature Positioning Air conditioner ON Air conditioner OFF thirmostat off LEV opening degree 15 min 4 Control data 06 05 04 03 02 01 LEV opening degree A target discharge temperature B C D E F 30 50 70 The operational frequency of the compressor 90 110 130 Hz A 58 49 B 60 58 C 68 67 D 70 70...

Страница 36: ... valve is OFF w The 4 way valve does not turn ON before the compressor starts up ON OFF ON OFF Outdoor fan Compressor 5 sec 15 sec ON OFF Compressor Outdoor fan 4 way valve ON OFF ON OFF COOL 5 seconds HEAT 5 seconds 9 12 Outdoor fan motor control The AC fan motor turns ON OFF interlocking with the compressor ON The AC fan motor turns on 5 seconds before the compressor starts up OFF The AC fan mot...

Страница 37: ...ITOR lamp flashes to show abnormality Controlled voltage is applied to AC fan motor The microprocessor outputs pulse every 100Hz every 50Hz in half wave Fan speed varies according to the time span between a Zero cross point on the commercial wave and a pulse out put point The microproces sor drives SSR on relay P C board The microprocessor detects rotational frequency of AC fan motor using Hall el...

Страница 38: ...Cut both J1 and J2 Table1 10 SERVICE FUNCTIONS MSZ A09RV MUZ A09RV MSZ A12RV MUZ A12RV E1 E1 E1 E1 10 1 CHANGE IN DEFROST SETTING JP7 When the JP7 wire of the outdoor electronic control P C board is cut the defrost temperature will be changed Refer to page 55 Jumper wire Change point Deforst finish temperature changes from 13 to 15 JP7 10 2 TIMER SHORT MODE For service set time can be shortened by...

Страница 39: ...ion settings remain 2After the power is restored the unit restarts automatically according to the memory However it takes at least 3 minutes for the compressor to start running NOTE The operation settings are memorized when 10 seconds have passed after the indoor unit was operated with the remote controller If the main power is turned off or a power failure occurs while AUTO START STOP timer is ac...

Страница 40: ...s on the P C board it may cause an electric shock 3 When closing the P C board cover prevent a foreign matter or dust from coming inside the P C board Cover Relay P C board Electronic control P C board MSZ A09RV MSZ A12RV E1 E1 3 Troubleshooting procedure 1 First check if the POWER MONITOR lamp on the indoor unit is flashing on and off to indicate an abnormality To make sure check how many times t...

Страница 41: ...Cause in outdoor unit Outdoor control system error wIn case of serial signal error the mis wiring indication will appear by turning the power off and then turning it back on 5 time flash 2 5 seconds OFF 6 time flash 2 5 seconds OFF 12 time flash 2 5seconds OFF Operation start 1 time flash 2 5 seconds or 0 5 seconds OFF Refer H Check of indoor electronic P C board on page 50 2 time flash 2 5 second...

Страница 42: ...cuit is detected more than 10 min after compressor start up When nonvolatile memory data cannot be read properly on outdoor electronic control P C board outdoor unit stops and restarts 3 minutes later Shortage of refrigerant Outdoor electronic control P C board Refer to I Check of outdoor thermistors on page 50 Refer to the characteristics of main indoor coil thermistor sub indoor coil thermistor ...

Страница 43: ...lash 2 5 seconds OFF 1 time flash 2 5 seconds OFF 3 time flash 2 5 seconds OFF 4 time flash 2 5 seconds OFF 5 time flash 2 5 seconds OFF 8 time flash 2 5 seconds OFF 7 time flash 2 5 seconds OFF Converter power system Outdoor power system Outdoor thermistors Outdoor control system Over current protection Discharge temperature overheat protection Fin temperature thermistor overheat protection High ...

Страница 44: ...iring is correct before the operation starts w3 Replace indoor electronic control P C board w3 Be sure to release the failure mode recall function after checking w The serial signal indication on the Power monitor lamp right side facilitates checking abnormality based on the failure mode Mis wiring indication No No Yes Correct wiring Replace outdoor electronic control P C board Main circuit Reacto...

Страница 45: ...e 10 40 Normal Abnormal 5k 55K Open or short circuit Disconnect the connector and measure the resistance with a tester Before measurement hold the thermistor with your hands to warm it up Part temperature 20 40 Normal Abnormal 100k 250K Open or short circuit Disconnect the connector and measure the resistance with a tester Part temperature 10 80 Normal Abnormal 5k 30K Open or short circuit Disconn...

Страница 46: ... 30 Normal Abnormal Measure the resistance between the terminals with a tester Part temperature 10 40 Measure the resistance with a tester Part temperature 10 40 Terminal CN724 Normal Abnormal WHT RED RED ORN YLW BRN 42 52 Open or short circuit BRN BLU Terminal Normal Abnormal WHT BLK 173 7 212 6 BLK RED 277 8 339 9 Open or short circuit YLW BLK 11 4 14 1 approx 300 in each phase Open or short cir...

Страница 47: ...on by pressing the Emergency operation switch on the indoor unit test run mode Measurement point at 3 points BLK WHT BLK RED WHT RED NOTE Measure AC voltage at 3 points more than one minute ofter the outdoor fan motor starts running Check of IPM B Disconnect the connector between compressor and IPM and measure resistance between terminals on the IPM Measurement point at 6 points BLK WHT WHT BLK BL...

Страница 48: ...top of the inverter due to overcurrent Judgment For reference 0 10 seconds abnormal short 10 60 seconds abnormal compressor lock out 60 seconds 5 minutes abnormal refrigerant circuit defect more than 5 minutes normal w Measure resistace between the lead wires at 3 points Outdoor fan starts Abnormal Compressor short circuit or layer short Abnormal Compressor lock out Abnormal refrigerant circuit de...

Страница 49: ...sible Does the unit operate with remote controller Is noise heard from the radio Are there any fluorescent lights of inverter or radio start type within 1 meter Is resistance 0 short or open Re solder it Replace batteries and then press RESET button See page 40 Replace indoor fan motor Replace indoor electronic control P C board CN211 3 2 1 fan motor Indoor electronic control P C board Check the m...

Страница 50: ...thermistor Fin temperature thermistor Does the unit operate 10 minutes or more No Yes Terminal block Is LED in the outdoor electronic control P C board flashing 5 minutes Replace the outdoor electronic control P C board No Yes Does the resistance of thermistor have the characteristics on page 55 Replace the thermistor Check both parts side and pattern side of indoor electronic control P C board vi...

Страница 51: ...ctor CN 771 on relay P C board Disconnect connector between compressor and IPM Turn on power supply to indoor unit and press emergency operation switch 3 minites after power turns on measure voltage between terminals of CN 771 1 CN913 Relay P C board 2 4 way valve AC 220 240V Yes Yes Yes No No No CN771 Relay P C board 1 2 3 4 5 6 Fan motor Indoor outdoor connecting wire Outdoor terminal block TB1 ...

Страница 52: ... LED indication Check of outdoor electronic control P C board N Cooling heating does not operate Speed of compressor rotation does not inclease Replace the outdoor electronic control P C board Does the outdoor unit fan operate nomally Check the connecting CN911 in the relay P C board and CN726 in the outdoor electronic control P C board Turn on power supply to indoor unit and press emergency opera...

Страница 53: ...es the resistance of LEV coil have the characteristics Do you hear LEV click click No Yes Yes Yes Ok Yes Yes No No LEV CN 724 WHT 6 RED 1 RED 1 ORE 4 YLW 5 BRN 2 BRN 2 BLU 3 resistance 39 56 Characteristics of LEV coil After you have followed the entire flow chart of Check of linear expansion valve LEV be sure to follow the procedure below Replace current limiting resistor Check of rush current li...

Страница 54: ...indoor coil thermistor RT12 Timer short mode point Room temperature thermistor RT11 Indoor coil thermistor RT12 13 0 0 10 20 30 40 10 20 30 40 50 60 Emergency operation switch Power supply input 220 240V AC Fan motor power supply How to set Auto restart function Cut the Resistor JR07 Refer page 39 5V DC 12V DC Temperature Resistance k Sub indoor coil thermistor RT13 ...

Страница 55: ...Fin temperature thermistor RT64 Resistance k Resistance k Resistance k MUZ A09RV MUZ A12RV E1 E1 Fin temperature thermistor RT64 CN642 Outdoor electronic control P C board 370V DC C62 Jumper wire for change in defrost setting JP7 Refer to page 38 Defrost thermistor RT62 CN641 Discharge temperature thermistor RT61 LED monitor lamp Power supply zero crossing signal 220 240V AC CN726 Connector for in...

Страница 56: ...A09RV MUZ A12RV Noise filter P C board E1 E1 Outdoor fan motor 220 240V AC R V coil 220 240V AC Relay P C board 220 240V AC FRONT BACK FRONT BACK Power supply zero crossing signal 220 240V AC CN911 220 240V AC ...

Страница 57: ...of the terminal with lock mechanism The terminal with no lock mechanism can be removed by pulling it out Check the shape of the terminal and work Terminal with lock mechanism Detaching points Connector Sleeve Locking lever 2 Removing the electronic control P C board and the display P C board 1 Remove the front panel Refer to 1 2 Remove the screw of the electrical cover Remove the electrical cover ...

Страница 58: ...motor disconnect the connector 3 Remove the vane motor Photo 4 Photo 5 Drain hose Vane motor Fan motor screws Indoor coil thermistor 5 Removing the line flow fan and the indoor fan motor 1 Remove the front panel Refer to 1 2 Remove the electrical box 3 Pull out the drain hose from the nozzle assembly remove the nozzle assembly 4 Remove the screws fixing the fan motor 5 Remove the screws fixing the...

Страница 59: ... relay P C board 3 Remove all the connectors and the terminals on noise filter P C board 4 Remove the ground wire screwed down on the relay panel 5 Remove the noise filter P C board 4 Removing the relay P C board 1 Remove the top panel the service panel and the cabinet Refer to 1 2 Remove all the connectors and the terminals on relay P C board 3 Remove the relay P C board 3 Removing the electronic...

Страница 60: ...pressor 9 Remove the compressor NOTE Before using a burner reclaim gas from the pipes until the pressure gauge shows 0 kg cm2 0MPa Use the burner under the condition that gas can be recovered even when the inner pressure rises by heat 6 Removing the outdoor fan motor 1 Remove the top panel the service panel and the cabinet Refer to 1 2 Disconnect the connector remove the clamp of fan motor lead wi...

Страница 61: ...IZING FILTER AIR CLEANING FILTER Symbol in Wiring Diagram Q ty unit 2PCS SET 3PCS SET See page 65 MAC 1800DF See page 65 MAC 1300FT Remarks Part No NO Part Name 1 1 1 1 2 3 1 2 1 1 1 MSZ A09RV E1 WH 1 2 3 4 5 6 7 8 9 10 11 WH 1 1 1 1 2 3 1 2 1 1 1 MSZ A12RV E1 13 2 INDOOR UNIT HEAT EXCHANGER 2 6 5 8 7 3 1 12 9 13 14 4 CATCH SCREW CAP E02 448 620 E02 151 666 E02 151 667 INDOOR HEAT EXCHANGER UNION ...

Страница 62: ...6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 BEARING MOUNT SLEEVE BEARING LINE FLOW FAN DRAIN HOSE NOZZLE WH VANE UPPER WH VANE LOWER WH FUSE VARISTOR VANE CRANK SET VANE MOTOR HORIZONTAL VANE MOTOR VERTICAL INDOOR FAN MOTOR FAN MOTOR RUBBER MOUNT ELECTRIC CONTROL P C BOARD ELECTRIC CONTROL P C BOARD GREEN SIGN P C BOARD ROOM TEMPERATURE THERMISTOR TERMINAL BLOCK INDOOR COIL THERMISTOR VANE MOTOR S...

Страница 63: ...LVE GAS SERVICE PANEL BACK PANEL PIPE ASSEMBLY 4 WAY VALVE CONDENSER NET SEPARATOR OUTDOOR FAN MOTOR CAPILLARY TUBE MUFFLER MUFFLER SPECIAL Symbol in Wiring Diagram Q ty unit SNB092FJAH 6 35 9 52 EXP VALVE CAPILLARY RA6V28 2PC SET 3 0 2 0 300 Remarks Part No NO Part Name MC MF61 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 2 1 1 MUZ A09RV E1 MUZ A12RV E1 1 16 15 11 8 7 6 5 4 2 3 9 10 12 17 14 13 MUZ A09RV MU...

Страница 64: ...RD TERMINAL BLOCK Symbol in Wiring Diagram Q ty unit Remarks Part No NO Part Name RT64 L64 TB1 21S4 RT61 62 TB2 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 1 MUZ A09RV E1 MUZ A12RV E1 DISCHARGE DEFROST T2W E71 704 10 DRAIN SOCKET ASSY Symbol in Wiring Diagram Q ty unit Remarks Part No NO Part Name 1 1 MUZ A09RV E1 MUZ A12RV E1 DRAIN SOCKET 1ps DRAI N CAP 3pcs 8 7 1 2 3 6 4 5 MUZ A09RV MUZ A12RV E1 E1 13 6 O...

Страница 65: ... 13 9 DEODORIZING FILTER DEODORIZING FILTER removes ammonia and hydrogen sulfide emitted from tobacco and odors of pets Clean DEODORIZING FILTER every two weeks If the filter is particularly dirty clean the filter more often For cleaning soak the filter in warm water for a while and then wash and rinse it Dry the filter in the shade thoroughly When the filter color is still dark even after cleanin...

Страница 66: ...OKYO100 8310 JAPAN C C Copyright 1999 MITSUBISHI ELECTRIC ENGINEERING CO LTD Distributed in May 2002 No OB230 REVISED EDITION A Distributed in Mar 1999 MEE No OB230 244 Made in Japan New publication effective May 2002 Specifications subject to change without notice ...

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