AirQ MSM-09HRN1 Service Manual
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AirQ MSM-09HRN1, SERVICE MANUAL AirQ AIRCONDITIONER MULTI SPLIT TYPE MSM-09HRN1 MSM-12HRN1 MSM-30HRN1 V1.0 Dec, 2007
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 1 OF 20 Multi SERIES 1. Features ……………………………………………………………………….2 2. Function ……………………………………………………………………….2 3. Specification …………………………………………………………………..3 4. Dimensions ……………………………………………………………………6
4/8/2008R series service manual PAGE 2 OF 20 1. Features 1.1 Universal outdoor unit and indoor unit design 1.2 R410a refrigerant; Cooling & heating units 1.3 The indoor unit combination is as follow list: OUTDOOR UNIT MODEL INDOOR UNIT COMBINATION MSM-18HRN1 9K×2 MSM-21HRN1 9K+12K MSM-27HRN1 9K×3 MSM-30HRN1 9K×2+12K 1.4 Working Temperature Range C
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 3 OF 20 3. Specification 3.1 Indoor unit Model MSM-09HRN1 MSM-12HRN1 Power supply Ph-V-Hz 1ph-220-224V~-50Hz 1ph-220-224V~-50Hz Capacity Btu/h 8500 11000 Input W 51.5 51.5 Cooling Rated current A 0.24 0.24 Capacity Btu/h 9000 12000 Input W 51.5 51.5 Heating Rated current A 0.24 0.24 Model RPG20E RPG20E Brand Welling
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 4 OF 20 Liquid side/ Gas side mm Ф6.35/Ф9.53 Ф6.35/φ12.7 3.2 Outdoor unit Outdoor Model MSM-18HRN1 MSM-21HRN1 Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz Capacity Btu/h 18000 21000 Capacity W 5275 6155 Input W 1680 2000 Rated current A 8.0 9.7 Cooling EER w/w 3.1 3.04 Capacity Btu/h 20000 24000 Capacity W 5862 7034 Input
4/8/2008R series service manual PAGE 5 OF 20 Thermostat type Electronic control Operation temp ℃ 17-30 Ambient temp ℃ 18~43(cooling); -7~24(heating) Outdoor Model MSM-27HRN1 MSM-30HRN1 Power supply Ph-V-Hz 1Ph,220-240V~,50Hz 1Ph,220-240V~,50Hz Capacity
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 6 OF 20 Thermostat type Electronic control Operation temp ℃ 17-30 Ambient temp ℃ 18~43(cooling); -7~24(heating) 4 Dimension 4.1 Indoor unit dimension Dimension Mode W H D 9K 790 275 190 12K 790 275 190
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 8 OF 20 5. Refrigeration cycle diagram “1 drives 3 system” is made up of one “1 drive 1 system” and one “1 drive 2 system”. PMV1 1 drive 2 system SV1:Primary four-way valve SV2:Secondary four-way valve PMV1,PMV2:Electronic expansive valve T1,T2:Indoor pipe temperature sensor Condenser
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 12 OF 20 7. Troubleshooting 7.1 Indoor unit Failure phenomenon Operation lamp Timer lamp Indoor fan speed has been out of control for over 1 minute ☆ X Indoor room temp. Sensor or evaporator temp. Sensor is open circuit or short circuit ☆ On EEPROM error On ☆ Cross zero signal error ☆ ☆ r Extinguish ☆ Flash at 5Hz On Light 7.2 Outdoor unit (on mainboard) 7.2.1 1 drive 2 Failure phenomenon LED1 LED2 LED3 Stand by ☆ ☆ ☆ High temp. protect of condenser ☆ ☆ Temp. sensor in condenser 1 is open circuit or short circuit ☆ Temp. sensor in condenser 2 is open
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 13 OF 20 7.3.2 Indoor room temp. sensor or evaporator temp. sensor is open circuit or short circuit 7.2.3 EEPROM error 7.2.4 Cross zero signal error 7.2.5 High temp. Protect of condenser When outdoor pipe temp. is more than 65°C, the unit will stop, and unit runs again when outdoor pipe temp. less than 52°C. Is the indoor fan motor connector and connection
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 14 OF 20 7.2.6 Temp. Sensor in condenser is open circuit or short circuit Is the outdoor temperature sensor connector and connection good? Repair the connector and reconnect Replace the sensor and check if E5 display again? NO YES Replace outdoor e-box YES Is the temp. more than 65°C ? Is the temp sensor right according to the annex 1 Replace the outdoor main board No Yes Replace the temp sensor No
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 15 OF 20 8 Electronic functions 8.1 Electric Control working environment 8.1.1 Input voltage: 175~253V 8.1.2 Input power frequency: 50Hz/60Hz 8.1.3 Ambient temperature: -7°C~+43°C 8.1.4 Indoor fan normal working amp is less than 1A, 8.1.5 Outdoors fan normal working amp is less than 1.5A 8.1.6 Four-way valve normal working amp is less than 1A. 8.1.7 Swing motor: DC12V. 8.1.8 Display board Operation The indicator flashes once every second after power is on and illuminates when the air conditioner
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 16 OF 20 8.3 Systematic functions. Remote receiving. Testing and forced run. Position set for indoor unit wind vane. LED display and alarm. On or off Timer. Protection for the compressor. High temperature protection of indoor heat exchanger in heating mode. Auto defrosting and heating recovery under heating mode. Anti cold air under heating mode. Anti frozen under cooling mode. 8.4 Protection 8.4.1 The compressor functions protection with a delay of three minutes. 8.4.2 High temp. protection of
4/8/2008R series service manual PAGE 17 OF 20 T< TE6 >5 Minutes Off Off T> TE5 On On Temp. down T< TE5 >5 Minutes Off Off Condenser high-temperature protection under heating mode T3 >65℃,turn off compressor. TE5: Evaporator low temperature protection entering temperature TE6: Evaporator low temperature protection rest
4/8/2008R series service manual PAGE 18 OF 20 TE>TE2 Setting fan speed TE> TE3 Setting fan speed TE3<TE<TE4 Breeze Indoor exchanger temp. down TE<TE4 Off TE: Indoor evaporator temperature TE1: Anti-cold wind, from Fan Off to Breeze temperature TE2: Anti-cold wind, from Breeze to Setting Fan Speed temperature TE3: Anti-cold wind, from Setting Fan Speed to Bree
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 19 OF 20 8.10 Automatic operation mode 8.10.1 The air conditioner automatically selects one of the following operation modes: cooling, heating or ventilation according to the difference between room temp. (TA) and set temp. (TS). TA—TS Operation mode TA—TS>2℃ Cooling -1℃≤TA—TS≤+2℃ Fan-only TA—TS<-1℃ Heating (Fan-only for cooling only type) 8.10.2 The indoor fan blows automatically in corresponding selected mode. 8.10.3 The motion of indoor fan’s vane should accord with the selected operation mode. 8.10.4 One mode should be carried out for at least 15 minutes once se
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 20 OF 20 The set temperature rise 1℃ per hour. Two hours later, the set temperature will maintain as a constant and the air circulation is kept at low speed. 8.14.3 Heating: The set temperature decrease 1℃ per hour. Two hours later, the set temperature will maintain as a constant and the air circulation is kept at low speed (Cold air proof function takes precedence over all). 8.14.4 Auto: The economic running function operates in accordance with the selected running mode by the auto mode. 8.15 Mode conflict The indoor units can not work cooling mode and heating at same time. Heating mode has a pr
AirQ MSM-09HRN1, 4/8/2008R series service manual PAGE 21 OF 20 9 Characteristic of temp. sensor Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ Temp.℃ Resistance KΩ -10 62.2756 17 14.6181 44 4.3874 -9 58.7079 18 13.918 45 4.2126 -8 56.3694 19 13.2631 46 4.0459 -7 52.2438 20 12.6431 47 3.8867 -6 49.3161 21 12.0561 48 3.7348 -5 46.5725 22 11.5 49 3.5896 -4 44 23 10.9731 50 3.451 -3 41.5878 24 10.4736 51 3.3185 -2 39.8239 25 10 52 3.1918 -1 37.1988 26 9.5507 53
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