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ESI Outdoor Unit Installation Instruction
05.2018
Manufacturer reserves the right to change at any time for specifications or designs without notice and incurring obligations.
Over-current protection for compressor
or
1.Error definition:
P6: The detected compressor current is over the maximum allowable value.
2~3Ton:
16A
4~5Ton:
20A
E6: System locks up when P6 has occurred six times within 3 hours.
2.Possible causes:
Abnormal power supply voltage
Too much refrigerant in the system resulting in liquid slugging at compressor.
Damaged main control board.
Indoor unit is suddenly powered off.
Damaged compressor.
Display
NO
YES
The power supply voltage is less than175VAC.
Contact agency supplying power
to verify that they are sending the
correct voltage.
Are the compressor wirings(U/V/W) connected correctly?
YES
NO
Reconnect the compressor wiring
Check whether the compressor is open-circuited.
*Note
NO
YES
Replace the compressor
Can the system restarted when the differential of high pressure
and low pressure is less than 29psi?
YES
Check the stop valve state and
occlusion of refrigerant pipe
Replace the main control board
NO
Note:
Normal resistance for compressor
3-phase resistance for compressor is less than 5Ω.
The insulation resistance for compressor is greater than 100KΩ.