Vivax HPS-120HM155AERI/I3, User Manual

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ENG
VIVAX
39
ERROR CODE
MALFUNCTION OR
PROTECTION
FAILURE CAUSE AND CORRECTIVE ACTION
Low pressure protection
Pe<0.6
）
occured 3
times in an hour
Refer to P0
Low pressure protection
1. System is lack of refrigerant volume. Charge the
refrigerant in right volume.
2. When at heating mode or DHW mode, the
outdoor heating exchanger is dirty or something
is block on the surface. Clean the outdoor
heating exchanger or remove the obstruction.
3. The water flow is too low in cooling
mode.increase the water flow.
4. Electrical expansion valve locked or winding
connector is loosen. Tap‐tap the valve body and
plug in/ plug off the connector for several times
to make sure the valve is working correctly.
High pressure protection
Heating mode, DHW mode:
1. The water flow is low; water temp is high,
whether there is air in the water system.
Release the air.
2. Water pressure is lower than 0.1Mpa, charge
the water to let the pressure in the range of
0.15~0.2Mpa.
3. Over charge the refrigerant volume. Recharge
the refrigerant in right volume.
4. Electrical expansion valve locked or winding
connector is loosen. Tap‐tap the valve body and
plug in/ plug off the connector for several times
to make sure the valve is working correctly. And
install the winding in the right location DHW
mode: Water tank heat exchanger is smaller
Cooling mode:
1. Heat exchanger cover is not removed.
Remove it.
2. Heat exchanger is dirty or something is block
on the surface. Clean the heat exchanger or
remove the obstruction
Compressor overcurrent
protection
1. The same reason to P1.
2. Power supply voltage of the unit is low, increase
the power voltage to the required range