6. TROUBLE SHOOTING
2.2. When the unit has the following trouble and the compressor stops running, press the sleep button on
the remote controller 4 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, you must press the sleep button 4 times
again, and the LED will show the other error code.
Refer to the remote controller where the sleep key can set into 4 different combination ways (new design
remote controller), 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 will show.
Error
code
Running Timer Sleep Power Remark
：★
★
★
★
Light o Flash x OFF
1
2
3
4
Content
Remark
The root cause is may be one
of the following
0
Normal
1
x
o
x
x
Failure of
temperature
sensor of
outdoor coil
a. The outdoor temperature
sensor is loose;
b. The outdoor temperature
sensor fails;
c. The indoor control board fails
2
×
Ο
★
×
Compressor
exhaust
temperature
sensor in
trouble
a. the compressor exhaust
temperature sensor connection
is loose;
b. the compressor exhaust
temperature sensor fails;
c. the outdoor control board fails
5
★
Ο
×
×
IPM module
protection
a. The IPM board fails;
b. The outdoor fan is broken;
c. The outdoor fan motor fails;
d. The outdoor fan has been
blocked ;
e. The condenser is dirty;
f. The outdoor unit has been
installed without standard.
6
★
Ο
×
★
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
