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Troubleshooting
Error Code Table
1.Indication on the outdoor unit:
When the unit has the following trouble and the compressor stops running, The LED of outdoor control
board will show the error sequence automatically:
★：
NOTE:
LIGHT
O
Error
Outdoor Failure
code
Description
Mark description: the lights flash every second for the following faults
Normal
Outdoor coil
temperature
sensor in trouble
Compressor
exhaust
temperature
sensor in trouble
Communication
failure between
the indoor unit
and outdoor unit
Current overload
protection
Maximum current
protection
Communication
trouble between
outdoor unit and
driver
：
：
FLASH
OFF
LED1 LED2 LED3 the root cause my be one of the following
★
★
★
O
★
O
★
a. The outdoor coil sensor connect loose;
★
b. The outdoor coil temperature sensor is failure;
c. The outdoor control board is failure
a. The compressor exhaust temperature sensor
connect loose;
b. The compressor exhaust temperature sensor is
failure;
c. The outdoor control board is failure
a. The communication cable connect loose;
b. The communication cable is failure;
c. The connection between the filter board and the
outdoor control board is incorrect or loose;
d. The connection between the filter board and the
O
terminal is incorrect or loose;
e. The indoor control board is failure;
f. The PFC board is failure;
g. The power board is failure; h. the outdoor control
board is failure.
a. The fan motor run abnormally;
b. The condenser or and evaporator is dirty;
c. The air inlet and outlet is abnormally
a. The outdoor control board is short circuit;
★
b. The drive board is short circuit;
c. The other components is short circuit
a. The connection wires connect loose
★
b. The outdoor board or drive board is failure;
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