Owner's manual
Wall mounted FCU DC
The operation lamp is flashing rapidly (twice every second)
This lamp is still flashing rapidly after turn off the power and turn
on again.
Remote controller receives malfunction or the button does not
work well.
A safety device such as a fuse, a breaker frequently actuates.
Water leaks from indoor unit.
Other malfunctions.
8. TROUBLESHOOTING
If one of the following malfunctions occur, stop operation, shut
off the power, and contact with your dealer.
8.1. Troubles and causes of air conditioner
Table 8-1
Malfunction code
Malfunction
DC motor malfunction
T2 evaporator sensor malfunction
EE
E3
E2
Water-level alarm malfunction
E8
EEPROM communication error
E7
Table 8-2
Solution
Clean the heat exchanger.
Clean the air filter.
Eliminate all dirties and make air
smooth.
Close doors and windows.
Make curtains in order to shelter from
sunshine.
Reduce heat source.
AC cooling capacity reduces (normal).
Symptoms
Causes
Unit does not start
Air flowing normally but
completely can't cooling
Low cooling effect
Low heating effect
Power failure.
Power switch is off.
Fuse of power switch may have burned.
Batteries of remote controller exhausted
or other problem of controller.
Temperature is not set correctly.
Indoor unit heat exchanger is dirty.
The air filter is dirty.
Inlet of indoor units is blocked.
Doors and windows are open
Sunlight directly shine.
Too much heat resource.
Outdoor temp. is too high.
Wait for the comeback of power.
Switch on the power.
Replace the fuse.
Replace the batteries or check the
controller.
Set the temperature properly.
Use heating device.
Close doors and windows.
Outdoor temperature is lower than 7 C .
Doors and windows not completely
closed.
T1 evaporator sensor malfunction
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