Power World PHP09Hs-W - Other Malfunctions and Solutions

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First grade antifreeze protection in Winter
Er PC
Water pump will run automatically for first grade
antifreeze
Second grade antifreeze protection in
Winter
Er PC
Heat pump will start heating for second grade
antifreeze
Water flow switch
Er PL
Check water flow /switch
Exhaust temperature too high protection.
Er 3
1. Replace the compressor discharge temperature
sensor.
2. Reconnect or clean compressor discharge
temperature sensor and wrap it with insulation
tape.
3. Replace the controller or PC Board.
High pressure protection
Er 4
1. Discharge redundant refrigerant from heat
pump gas system
2.Clean the water exchanger or water fifter
Communication failure
Er 8
Check the wire connection
Defrosting
Defrost
instructions
8.2 Other Malfunctions and Solutions (No display on LED wire controller)
Malfunctions
Observation
Reasons
Solution
Heat pump is
not running
LED wire controller shows
no display
No power supply
Check whether cable and
circuit breaker are
connected
LED wire controller
displays the actual time
Heat pump under standby
status
Startup heat pump to run.
LED wire controller
displays the actual
water temperature
1. Water temperature is
reaching set value, heat pump
under constant temperature status
2. Heat pump just starts to run
3. Under defrosting
1. Verify water temperature
setting
2. Startup heat pump after
a few minutes
3. LED wire controller
should display "Defrosting"
Water
temperature is
cooling when
heat pump runs
under heating
mode
LED wire controller
displays actual water
temperature and no error
code displays
1. Chose the wrong mode
2. Figures show defects
3. Controller defect
1. Adjust the mode
2. Replace the defect LED
wire controller, and then
check the status after
changing the running
mode, verifying the water
inlet and outlet temperature
3. Replace or repair the
heat pump