R series service manual 214 GD Midea Refrigeration Equipment Co. Ltd MULTI SPLIT TYPE, HEAT PUMP AIR CONDITIONERS Technical service manual 2007 R407C Glory multi Series Indoor Models MSGI …

Indoor Models: MSGI-09HRN2, MSGI-12HRN2. Outdoor Models: M2OA-18HRN2,   M2OA-21HRN2, M3OA-27HRN2,   M3OA-30HRN2. Indoor unit: Operation ON/OFF by remote controller. Sensing by room temperature Room temperature sensor. Pipe temperature sensor.  Room temperature control Maintain the room temperature in accordance with the setting temperature. Starting temperature control Indoor fan is delayed for 5 sec at the starting. Indoor fan speed control high, med, low, breeze. Operation indication Lamps (VLED) Light up in the VLED for each operation mode. Two-direction air vane The unit will decide the louver direction according to operation mode. Sleep mode auto control The fan is turn to low speed (cooling/heating). The unit will be turn off at the seventh hour. Independent dehumidification The function is usually used in rainy days in springtime or damp areas. Turbo mode. Anti-cold function Prevent the cold wind at the beginning of unit start. Defrost mode. Auto-restart function. Air flow Direction control. Self-diag. function. Outdoor unit: Power relay control. The unit has 3 mins delay between continuously ON/OFF operations. Check point. Hydrophilic aluminum fin The hydrophilic fin can improve the heating efficiency at operation mode. 4 way valve control It is only operated in the heating operation mode except defrosting operation. Discharge pipe temperature protect. Anti-rust cabinet. 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     Four-way valve Evaporator
Compressor 1 drive 1 system Notice?For 1 drives 2 system, there are two individual refrigerant circuit and two compressors, but for the 1drive 2 system in the 1 drive 3 system, there is only one refrigerant circuit and only one compressor…

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