MCAC-UTSM-2008-04
Troubleshooting
Outdoor Units
45
8. Running lamp flash at 5Hz; Timer lamp and Defrosting lamp on:
Make the outdoor unit ventilate well
Drop refrigerant, then use the high pressure
nitrogen or refrigerant to blow pipe,
vacuumize and add the refrigerant again
Running lamp flash at 5Hz; Timer lamp and Defrosting lamp on:
Outdoor unit current protection
Judge 1: Check whether the input current of the power supply wire
is more than 16A
Check whether the refrigerant system is ok
Yes
Judge 2: Check whether the outdoor ambient temperature is too high
Yes
Stop the unit
Replace outdoor main board
No
No
Judge 3: Check whether the outdoor unit is bad ventilation
Yes
No
Judge 4: Check whether the heat exchanger is dirty
Yes
Clean the heat exchanger
No
Judge 5: The refrigerant pipe is blocked
Yes
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Summary of Contents for ACP-12CT32AEI/I
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