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8.1 Safety
Because of there are capacitors in PCB and relative circuit in outdoor unit, even shut down
the power supply, electricity power still are kept in capacitors, do not forget to discharge the
electricity power in capacitor.
The value of resistance is about 1500 ohms to 2000 ohms
Resistanc
e
The voltage in P3 and P4 in outdoor PCB is high voltage about 310V
The voltage in P6 in outdoor PCB is high voltage about 310V
8.2 Troubleshooting for indoor unit
Display
LED STATUS
E0
EEPROM error
E1
Communication error between indoor and outdoor unit
E2
Zero-crossing examination error
E3
Fan speed beyond control
E5
Outdoor units temp. sensor or connector of temp. sensor is defective
E6
Indoor units temp. sensor or connector of temp. sensor is defective
P0
Inverter module protection
P1
Outdoor voltage too low protection
P2
Compressor discharge temp. protection
P3
Outdoor temp. too low protection
P4
Compressor driving protection
