North American HVAC MOC-12HFN1-MS0W Service Manual
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Contents
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Electrical Control Function108 Electrical Control System1.3 Operation Modes and Functions1.3.1 Fan mode(1) Outdoor fan and compressor stop.(2) Temperature setting function is disabled, and no setting temperature is displayed.(3) Indoor fan can be set to high/med/low/auto.(4) The louver operates same as in cooling mode.(5) Auto fan:For 12-18K units, MUE-24HRFN1-MW, MTB-24HRFN1-MW, MCD-24HRFN1-MW:3.53.0HighLow1.0Medium1.5Ts=24For other units:5.04.0HighLow2.0Medium3.0Ts=241.3.2 Cooling Mode1.3.2.1 Electronic Expansion Valve (EXV) Control(Excluding MOC-12HFN1-MS0W,MOF-18HFN1-MS0W)For MOC-12HFN1-MV0W，MOZ-12HFN1-MW0W, MOF-18HFN1-MU0W:1.EXV will be fully closed when turning on the power. Then EXV will be standby with 480P open and willopen to target angle after compressor starts.2.EXV will close with -160P when compressor stops. Then EXV will be standby with 480P open and willopen to target angle after compressor starts.3. The initial open angle of EXV is 220P, adjustment range is 80-480p. The unit starts to work for 3 minutesthen adjusting open angle according to the temperature of compressor discharge every 2 minutes.For MOG-24HFN1-MT0W:1.EXV will be fully closed when turning on the power. Then EXV will be standby with 480P open and will |
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