Air-to-water Heat Pump
60
MONOBLOC
TYPE
(2) Comp Low- pressure protection E3
Compressor low-pressure protection E3
Is the low-pressure switch
broken or is the wiring loosened?.
Check the fan.
Replace or rewire
the low pressure switch.
Yes
No
Does the fan stop or run reversely?
Yes
No
Is the system leaked?
Repair the leakage
and add refrigerant according
to the required volume.
Yes
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