Gree Versati II Series - UNIT CONTROL SYSTEM; 1 OPERATION FLOWCHART

11
Air to Water Heat Pump
Service Manual- Versati II Series
CONTROL
UNITS CONTROL
1 OPERATION FLOWCHART
Power Switch ON
Operation Mode
Judgment
Cooling Heating
YES
Cooling
Operation
Heating
Operation
Water
Heating
Water Pump
Control
Electric Expansion
Valve Control
Error Indication
Outdoor fan Motor
Control
Compressor
Control
Error Indication
Water Flow
Switch Control
YES
NO
Error Indication
NO
Error Indication
NO
YES
YES
YES
Water Pump
Control
Electric Expansion
Valve Control
Error Indication
Outdoor fan Motor
Control
Compressor
Control
Error Indication
Water Flow
Switch Control
YES
NO
NO
Error Indication
YES
YES
YES
Error Indication
4-Way Valve
Control
Error Indication
3-Way Valve and
2-Way Valve
Control
Water Heating
Operation
Water Pump
Control
Electric Expansion
Valve Control
Error Indication
Outdoor fan Motor
Control
Compressor
Control
Error Indication
Water Flow
Switch Control
YES
NO
NO
Error Indication
YES
YES
YES
Error Indication
4-Way Valve
Control
Error Indication
NO
YES
YES
YES
NO
NO
3-Way Valve and
2-Way Valve
Control
3-Way Valve and
2-Way Valve
Control
YES
NO
YES
NO