Air-to-water Heat Pump
59
MONOBLOC
TYPE
19.6.2 Flow chart of troubleshooting
(1) Comp high-pressure protection E1
Compressor high-pressure protection E1
Is water in the tank inadequate?
Is the temperature sensor
of the tank installed incorrectly?
Does the electronic expansion
valve work abnormally?
Install rightly the
tank temperature sensor.
Yes
No
Yes
No
Yes
No
Yes
Are gas valve and
liquid valve not fully open?
Fill the tank with tank.
Fully open the valves.
Replace the electronic
expansion valve.
Is the high-pressure switch
broken?
Is the wiring of the high-pressure
switch loosened?
No
No
Replace the wiring.
Replace the high-pressure
switch.
Yes
Yes
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