Gree FLEXX Series Service Manual

GREE DC INVERTER HEAT PUMP CONDENSING UNIT
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3.4 Troubleshooting
3.4.1 “E1” Compressor High Pressure Protection
Error display: ODU mainboard LED displayer
Error judgment condition and method:
It is judged through the action of high pressure switch. If the high pressure switch is cut off, it is judged that
high pressure is too high and the system stops operation for protection.
Possible reason
：
■Cut-off valve of ODU is not fully opened;
■High pressure switch is abnormal;
■Outdoor or indoor fan is not working properly;
■IDU filter or air duct is blocked (heating mode);
■Ambient temperature is too high;
■Refrigerant charging amount is too much;
■System pipeline is blocked

Gree FLEXX Series Specifications

General

Type	Heat Pump
Series	FLEXX
SEER	Up to 20
HSPF	Up to 10
Refrigerant	R410A
Heating Operation Range	-22°F to 75°F
Cooling Operation Range	5°F to 122°F
Operating Temperature Range (Heating)	-22°F to 75°F
Operating Temperature Range (Cooling)	5°F to 122°F
Energy Efficiency Ratio (EER)	Up to 12.5
Dimensions (Outdoor Unit)	Varies by model
Weight (Outdoor Unit)	Varies by model
Compressor Type	Inverter
Power Supply	208/230V, 1Ph, 60Hz
Noise Level	As low as 55 dB(A)