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SERVICE MANUAL

MIDEA AIRCONDITIONER

DC INVERTER

SPLIT WALL-MOUNTED TYPE

MSX-18HRDN1-QC2

V1.0

Apr, 2008

Содержание MSV1-18HRDN1-QC2F

Страница 1: ...SERVICE MANUAL MIDEA AIRCONDITIONER DC INVERTER SPLIT WALL MOUNTED TYPE MSX 18HRDN1 QC2 V1 0 Apr 2008...

Страница 2: ...purging Re installation 14 7 7 Balance refrigerant of the 2 way 3 way valves 15 7 8 Evacuation 16 7 9 Gas charging 17 8 Operation characteristics 18 9 Electronic function 19 9 1 Abbreviation 19 9 2 Di...

Страница 3: ...10 Troubleshooting 29 10 1 Indoor Unit Error Display 30 10 2 Diagnosis and Solution 31 10 3 Key parts checking 34...

Страница 4: ...a defective installation stand It may cause injury accident or damage to the product Be sure the installation area does not deteriorate with age If the base collapses the air conditioner could fall wi...

Страница 5: ...directly It may cause corrosion on the product Corrosion particularly on the condenser and evaporator fins could cause product malfunction or inefficient operation Operational Do not expose the skin d...

Страница 6: ...3 your skin or clothes wash it well with clean water Do not use the remote of the batteries have leaked The chemical in batteries could cause burns or other health hazards...

Страница 7: ...rding to operation mode Turbo wind high med low breeze Restarting is for approx 3 minutes Prevent the water being frozen on evaporator by sensing the evaporator pipe temperature in cooling mode Room t...

Страница 8: ...ration mode Hydrophilic aluminum fin It is only operated in the heating operation mode except defrosting operation Anti rust cabinet Valve protection cover 4 way valve control Made from electrolytic z...

Страница 9: ...6 3 Dimension 3 1 Indoor Unit 3 2 Outdoor Unit...

Страница 10: ...RPG28D Brand Welling Input W 47 Capacitor uF 1 5 Indoor fan motor Speed hi mi lo r min 1180 1080 1000 Indoor air flow Hi Mi Lo m3 h 800 700 600 Indoor noise level Hi Mi Lo dB A 45 40 36 Dimension W H...

Страница 11: ...8 5 Refrigerant cycle diagram...

Страница 12: ...9 6 Wiring diagram 6 1 Indoor Unit...

Страница 13: ...10 6 2 Outdoor Unit...

Страница 14: ...7 1 4 6 35 5 10 25 15 Caution Capacity is base on standard length and maximum allowance length is base of reliability Oil trap should be installed per 5 7 meters 7 4 Air purging of the piping and ind...

Страница 15: ...and then wait for one minute 5 Use torque wrench to tighten the service port cap to a torque of 1 8 kgf m 18N m 6 Set the 3 way valve to the opened position 7 Mounted the valve stem nuts to the 2 way...

Страница 16: ...hose with the push pin to the gas service port 5 Air purging of the charge hose Open the low pressure valve on the charge set slightly to purge air from the charge hose 6 Set the 2 way valve to the cl...

Страница 17: ...te repeat 3 times After purging the air use a torque wrench to tighten the flare nut to on the 2 way valve 4 Check the gas leakage Check the flare connections for gas leakage 5 Discharge the refrigera...

Страница 18: ...ice port 3 Open the valves Low side on the charge set and discharge the refrigerant until the gauge indicates 0 05 to 0 1Mpa If there is no air in the refrigeration cycle the pressure when the air con...

Страница 19: ...ved toward 0 1 Mpa 76 cmHg vacuum of 4 mmHg or less 3 Close the valve Low side on the charge set turn off the vacuum pump and confirm that the gauge needle does not move approximately 5 minutes after...

Страница 20: ...fied amount of refrigerant if can be charged with a little at a time approximately 150g each time0 while operating the air conditioner in the cooling cycle however one time is not sufficient wait appr...

Страница 21: ...58 1 46 1 48 1 50 Cooling Power Input KW Remark Indoor room temperature 27 19 Outdoor temperature 35 Indoor fan speed High 15 Cooling Capacity KW Cooling Characteristics Outdoor Ambient Temperature 5...

Страница 22: ...eration This indicator illuminates when the air conditioner is in AUTO operation This indicator illuminates when the air conditioner starts defrosting automatically or when the warm air control featur...

Страница 23: ...If these protections happened the corresponding code will display on indoor unit LED 9 3 6 Sensor protection at open circuit and breaking disconnection 9 3 7 Fan Speed is out of control When Indoor Fa...

Страница 24: ...r descend a grade 7 minutes after starting After start if T stays in a zone for 3 minutes the frequency will change as follow Zone A Current frequency rise a grade till the maximum grade Zone B Elevat...

Страница 25: ...urns to turbo speed 3 After running for 30 minutes the machine will turn back to previous setting mode 9 5 6 Indoor fan operation rule 1 In cooling mode indoor fan runs all the time and the speed can...

Страница 26: ...on is preferential Auto fan action in heating mode 9 7 3 After starting the operation frequency of compressor submits to following rule When the machine runs if Th stays in a zone for 3 minutes action...

Страница 27: ...condition 1 if the two items are satisfied then judges if T2 has descended for more than 5 if it has the machine starts defrosting or continues to judge T2 and will not defrost until T2 drops more tha...

Страница 28: ...equency excluding F8 to a higher grade If indoor fan is in low speed or pause caused by defrosting or anti cold wind function frequency of compressor will not be elevated one grade until these limit h...

Страница 29: ...2 minutes after compressor stop For defrosting please refer to the passage defrosting mode 9 11 Two speeds outdoor fan function 9 11 1 Outdoor fan starts at the same time with compressor but stops 30...

Страница 30: ...the Aircon being turned on the Clean Air function is switched on when the aircon receives FRESH CODE at first time and ionizer is switched off when the aircon receives the CODE again It s a circle 3...

Страница 31: ...tion if the PCB doesn t receive any signal from remote controller for 7 minutes or pressing FOLLOW ME button again the follow me function will be turned off automatically and the temperature collectio...

Страница 32: ...apacitors in PCB and relative circuit in outdoor unit even shut down the power supply electricity power still are kept in capacitors do not forget to discharge the electricity power in capacitor Elect...

Страница 33: ...l error E3 Fan speed out of control E5 Open or short circuit of outdoor temperature sensor E6 Open or short circuit of room or evaporator temperature sensor P0 IGBT over strong current protection P1 O...

Страница 34: ...ection of L N S and GND good Is the GND connection on outdoor PCB good NO NO Reconnect and retest again Is the LED4 red on outdoor PCB bright and LED1 yellow blinking Replace outdoor e box Yes Yes The...

Страница 35: ...re cleared NO YES Check the compressor NO Is the indoor temperature and evaporator sensor connector and connection good Repair the connector and reconnect Replace the sensor and check if E6 display ag...

Страница 36: ...of inverter compressor is it 0 668ohm YES Replace inverter compressor Reconnect and retry NO NO Is the power supply good Be sure the power supply is normal when using the units NO YES Replace the out...

Страница 37: ...53 6F Measure the resistance value of each winding by using the multi meter 10 3 3 Indoor Fan Motor Model RPG28D Measure the resistance value of each winding by using the multi meter Position Resistan...

Страница 38: ...sor Measure the resistance value of each winding by using the multi meter Some frequently used R T data for T1 T2 T3 and T4 sensor Temperature 5 10 15 20 25 30 40 50 60 Resistance Value K 26 9 20 7 16...

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