Sinclair SCV-100EA, Руководство по обслуживанию

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P3: Compressor current protection
It will protect when input current is more than 22A(31A for 10-16kW ). It will recover when input current is less than 22A
(31A for 10-16kW ). It will recover automatically.
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LED displays P3
Compressor current protection
Check whether the input current of the power wire is more than 22A.
(31A for 10-16kW )
Check cooling system is normal or not.
YES
Check whether the outdoor ambient temperature is too high.
YES
Stop the unit.
NO
NO
Check whether the outdoor unit ventilates well.
YES
Make the outdoor unit
ventilates well.
NO
Whether the heat exchanger needs cleaning or not.
YES
Clean heat exchanger.
NO
If the refrigerant pipe is blocked or not?
YES Remove the refrigerant pipe and then use high
pressure nitrogen or refrigerant to blow the pipe.
Vacuumed the pipe then add the refrigerant again.
Replace main PCB
NO
Replace main PCB.
Whether the circulation water pump is damaged. Repair or replace the water pump
YES
Whether plate heat exchanger is fouling or blocked severely
Clean or replace heat exchanger.
YES
NO
NO
NO
NO
YES
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