34
Maintenance
Service Manual
(6) Overload malfunction E8
Clean the heat exchangers
and remove
blockage of air inlet/outlet.
Heat exchangers are
too dirty or the air inlet/outlet
is blocked.
Check motor and re-install the moto
to make it run normally.
Fan motor is not working
Abnormal fan speed; fan speed is too low
or the fan doesn't run.
End
Remove blockage in the system.
System is blocked inside
(dirt block, ice block, oil block, Y-valve no
fully open).
Compressor doesn't work
normally. Strange noise or leakage occurs.
Make compressor run normally.
Casing is too hot.
Replace a main
board with the
same model.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Malfunction is
eliminated.
Troubleshooting
for E8 malfunction
Yes
No
No
No
No
No
No
No
No
No
No
Yes
Malfunction is
eliminated.
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Temperature sensor of main board
can't detect correctly.
Replace the temperature sensor.
Whether the environment
is formidable
．
Operate the unit after ambient tempeature and
humidity is decreased or move the unit to the
place with low abient temprature and humidity.
