Specifications

Installation & Maintenacne Manual
NO,
Trouble display
Symptom
Verifying method
Maintenance
During operation,
shortcircuit and open
circuit the indoor room
temperature thermistor
for 2 seconds respectively.
Outdoor unit
fails to run
Check if thermistor is
out of work
Reconnect the plug
Check the indoor
circuit board
Flickers twice and ON f
or 5
seconds repeatedly
Room
temperature
thermistor
Flickers thrice and ON for
5 seconds repeatedly.
Indoor fan motor
runs for 12
seconds and
stops for 3
minutes. Motor
is damaged,and
fan fails to run.
Check the indoor electrical
control board
Check the indoor fan motor
Replug
the plug
Indoor fan
motor
Pipe-
temperature
thermistor
Check if the thermistor is
out of w
ork
Reconnect the plug
Check the indoor circuit
board
Outdoor unitfails
to run
Flickers for four times and ON
for 5 seconds repeatedly.
When the indoor fan motor runs for the 12 seconds, it is impossible to emit feedback signal of rotation speed.
unplug the plug CN211, measure the section between Cn121 , and
verify if signal is over 1.5V
--
During operation,
shortcircuit and open circuit
the indoor pipe-temperature
thermistor for 2 seconds
3. Trouble selfchecking table
Before troubleshooting, ensure that the symptom reoccurs for precise judgement.
9K/12K/18K
Double 8 of LED display
E2
E6
E1
Outdoor
defro
sting
thermistor
E5
Outdoor unit
doesn't
operate
Check to see whether
thermistor is ineffective.
Reconnect socket.
Check indoor circuit
board.
After compressor is
started, defrost
thermistor is connected
or disconnected.
Trouble source
1
2
4
3
VII.Troubleshooting