Chapter 5 Control - Mitsubishi Electric PURY-P200YLM-A(1) Service Handbook

Chapter 5 Control
5-1 Dipswitch Functions and Factory Settings .................................................................................... 127
5-1-1 Outdoor Unit Switch Functions and Factory Settings ......................................................................... 127
5-1-2 Indoor Unit Switch Functions and Factory Settings ............................................................................ 131
5-1-3 Remote Controller Switch Functions and Factory Settings................................................................. 133
5-1-4 BC Controller Switch Settings............................................................................................................. 134
5-2 Outdoor Unit Control ........................................................................................................................ 135
5-2-1 Overview ............................................................................................................................................. 135
5-2-2 Rotation Control .................................................................................................................................. 135
5-2-3 Initial Control ....................................................................................................................................... 135
5-2-4 Startup Control.................................................................................................................................... 135
5-2-5 Refrigerant Bypass Control................................................................................................................. 136
5-2-6 Frequency Control .............................................................................................................................. 138
5-2-7 Defrost Operation Control ................................................................................................................... 139
5-2-8 Continuous heating mode control ....................................................................................................... 141
5-2-9 Refrigerant Recovery Control ............................................................................................................. 143
5-2-10 Outdoor Unit Fan Control.................................................................................................................... 143
5-2-11 Evaporation Temperature Control (Expansion Valves <LEV5a and LEV5b>).................................... 144
5-2-12 Control at Initial Startup ...................................................................................................................... 144
5-2-13 Emergency Operation Mode ............................................................................................................... 146
5-2-14 Unit Control Scheme........................................................................................................................... 148
5-2-15 Refrigerant Circuits and Refrigerant Cycle Diagrams ......................................................................... 149
5-2-16 Operation Mode .................................................................................................................................. 150
5-2-17 Demand Control.................................................................................................................................. 151
5-2-18 Control of IH energization without the compressor in operation (not applicable to the EP500 model) ...151
5-2-19 Compressor heater control (EP500 model) ........................................................................................ 151
5-3 BC Controller Control....................................................................................................................... 152
5-4 Operation Flowcharts ....................................................................................................................... 153
5-4-1 Operation Sequence Flowchart .......................................................................................................... 153
5-4-2 Actions Performed in Different Modes ................................................................................................ 156
HWE1314A
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