GREE Air-ccoled Closed Control Unit Service Manual
Ⅲ Maintenance ............................................................................................. 88
1. Malfunction List ....................................................................................................................... 88
2. Troubleshooting ........................................................................................................................... 93
2.1 High Pressure Protection of Compressor .................................................................... 93
2.2 Low Pressure Protection of Compressor .................................................................... 94
2.3 Discharge Temp Protection for Compressor ............................................................... 95
2.4 Overload Protection of Compressor ............................................................................. 95
2.5 Overload Protection of Indoor Fan ............................................................................... 96
2.6 Temperature Protection of Electric Heater .................................................................. 96
2.7 Low Current Malfunction, Drainage Malfunction and High Water Level Malfunction
of Humidifier ........................................................................................................................... 97
2.8 Low Air Pressure Malfunction of Indoor Fan ............................................................... 98
2.9 Alarm for Blocking Filter ................................................................................................. 99
3. Case Study .................................................................................................................................. 100
4. Power Distribution of the Unit ................................................................................................... 103
4.1 Power Distribution Diagram......................................................................................... 103
4.2 Circuit Diagram (The circuit diagram is for reference only and the circuit diagram
on the unit is the standard.) ............................................................................................... 105
4.3 Introduction for Main Electric Parts ............................................................................ 114
5. Disassembly and Assembly of the Unit ...................................................................................... 116
5.1 Introduction to Key Parts ............................................................................................. 116
5.2 Assembly and Disassembly of Parts .......................................................................... 118
6. Exploded View and Parts List .................................................................................................... 120
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