58 PB
TROUBLESHOOTING
Indoor Unit
Diagnostic Codes
When the unit has the following trouble and the compressor stops running, The LED of outdoor control board will show the error sequence
automatically:
The indoor display board will show the error code automatically when the unit has the following trouble:
When the unit has the following trouble and the compressor stops running, press the sleep button on the remote controller for 10 times in ten
seconds and the 7-segment tube of the display board will show the error code as the following, if two malfunctions happened at the same time, the
sleep button needs to be pressed 10 times again, the LED will show the other error code.
Refer to the remote controller which the sleep key can set into 4 different combination ways , when using to check the error codes only takes effect
for pressing the sleep key 10 times in ten seconds instead of 4 times.
NOTE: If the troubleshooting inquiry display by 7-segment tube, then the error code will be displayed, otherwise only the LED of the display board
can show.
The failure is detected when the room temperature sensor broken or shorted over 5 sec.
The failure is detected when the temperature sensor of heater exchange broken or shorted over 5 sec.
The failure is detected when each setting data is not match after the EPROM self-check two times.
The failure occurs when the grounding signal is not detected after the appliance power ON.
Error
Code
Content The root cause is may be one of the following
EA The error code will display when the
communication between display board and
control board is interrupted.
a. The connection between the display board and control board is loose.
b. The indoor control board failed.
c. The wiring of the display board failed
0 Normal
1 The failure for temperature sensor of outdoor
coil
a. The outdoor temperature sensor loose.
b. The outdoor temperature sensor failed.
c. The indoor control board failed.
2 Compressor exhaust temperature sensor in
trouble
a. The compressor exhaust temperature sensor connector loose.
b. The compressor exhaust temperature sensor failed.
c. The outdoor control board failed.
5 IPM module protection a. The IPM board failed.
b. The outdoor fan is broken.
c. The outdoor fan motor failed.
d. The outdoor fan has been blocked.
e. The condenser is dirty.
6 AC voltage higher or lower protection a. the supply voltage is higher or lower than normal.
b. The inner supply voltage of the unit is higher or lower than normal.
7 Communication failure between the indoor unit
and outdoor unit
a. The communication cable is disconnected or loose.
b. The connection between the filter board and the terminal is incorrect or loose
c. The communication cable failed.
d. The connection between the filter board and the outdoor control board is incorrect or
loose.
e. The indoor control board failed.
f. The PFC board failed.
g. The power board failed.
h. The outdoor control board failed.
8 Current overload protection a. The fan motor runs abnormally.
b. The condenser and evaporator is dirty.
c. The air inlet and outlet are abnormal.
9 Maximum current protection a. The outdoor control board is short circuited.
b. The drive board is short circuited.
c. Other components are short circuited.
10 Communication trouble between outdoor unit
and driver
a. The connection wires loose.
b. The outdoor board or drive board failed.
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