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Operational malfunctions (continued)
Malfunction Possible causes Checks Remedial measures
The compressor's
suction pipe and / or
liquid separator
have iced up
Thermal load has
increased
Is the outdoor unit in per-
manent operating mode?
Reduce the thermal load.
If necessary
, install an
additional unit / insulate
components that have iced
up
Outdoor unit board malfunction display
Display Error description
E0 EEPROM error, outdoor unit
E2 Communication error between indoor unit and outdoor unit
E3 Communication error between inverter board and control board
E4 Outdoor unit air inlet temperature probe faulty
E5 Over-voltage or under-voltage error
E8 Condenser fan speed control sensor not working
F1 Temperature of suction pipe for indoor unit A faulty
F2 Temperature of suction pipe for indoor unit B faulty
F3 Temperature of suction pipe for indoor unit C faulty
F4 Temperature of suction pipe for indoor unit D faulty
F5 Temperature of suction pipe for indoor unit E faulty
P1 High pressure fault
P2 Low pressure alarm
P3 Compressor current consumption too high
P4 Temperature probe for heat gas line faulty
P5 Excessive temperature in condenser
P6 Inverter board safety shut-down
LP Ambient temperature too low
Note
After rectifying the fault, the malfunction code remains for 30 seconds (with the exception of E2 and E3).
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