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ERROR
CODE
MALFUNCTION
OR PROTECTION
FAILURE CAUSE
AND CORRECTIVE ACTION
High temperature protection
of refrigerant outlet temp of
condenser.
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.
3. There is no enough space around the unit for heat exchanging.
4. fan motor is broken, replace a new one.
DC generatrix voltage is too low
1. Check the power supply.
2. If the power supply is OK,and check if LED light is OK, check
the voltage PN, if it is 380V, the problem usually comes from the
main board. And if the light is OFF, disconnect the power, check the
IGBT, check those dioxides, if the voltage is not correct, the inverter
board is damaged, change it.
3. And if those IGBT are OK, which means the inverter board is OK,
power form rectifier bridge is not correct, check the bridge. (Same
method as IGBT, disconnect the power, check those dioxides are
damaged or not).
4. Usually if F1 exist when compressor start, the possible reason is
main board. If F1 exist when fan start, it may be because of inverter
board.