DC inverter ARV Individual Series technical manual
86
Over current protection:
“I” is the operation current of DC inverter compressor, I=24A.
Temp. sensor protection
If some malfunctions happen to discharge temp. senor , indoor coil temp. sensor, outdoor coil temp.
sensor, suction temp. sensor, ambient temp. sensor, the system will stop and display the error code.
In heating mode, if the defrosting temp. sensor is broken, and when it is time to defrost, it will directly
come to defrosting ,and last for 5 minutes. It will display the error coed when operate in cooling mode.
High pressure protection
When the switch is OFF for 2 seconds, the system stop, and 3 minutes later can start up. 3-time
protection in 60 minutes, should reset the outdoor.
Low pressure protection
When the switch is OFF for 2 seconds, the system stop, and 3 minutes later can start up. 3-time
protection in 60 minutes, should reset the outdoor.
During the first 10 minutes , defrosting progress, oil return progress, the low pressure switch will not
active.
Sequence protection
PCB detects whether the power supply is phase reversed or phase lost. IPM detects the power of DC
inverter compressor.
Communication protection
When signal missing for 4 minutes between outdoor unit and indoor unit,the system will display the
communication error code.
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