Troubleshooting
•
Turn off the main power switch immediately if a malfunction is detected. Contact the
installing dealer or qualified service technician. If the unit continues to run during a
malfunction, the unit may be damaged or electric shock or fire may occur.
•
Do not try to move or reposition the units. Please contact the servicing/installing dealer to
repair or move the units.
•
Check the following items before contacting the dealer or qualified service technician.
WARNING
Improper operation may lead to personal injury or casualty.
Condition
Possible Reason
Unit doesn’t run
When unit is started
immediately after it is just
turned off
Overload protection switch delays unit start up for
three minutes
When power is turned on
The unit is in standby for one minute
Mist comes from the
unit
When cooling cycle starts
Indoor high humidity air is cooled rapidly
Sound comes from
the unit
Slight cracking sound is
heard when unit starts
This sound occurs when the electronic expansion
valve initializes
There is sound when cooling
The sound of gas refrigerant flowing in unit
There is sound when unit
starts or stops
This sound occurs when gas refrigerant starts or
stops flowing
There is slight sound when
unit is running or after running
The sound of the drainage system operating.
Cracking sound is heard
when
unit is operating and after
operating
This sound occurs when the unit panels expand or
contract due to temperature change
The unit blows out
dust
When the unit has been off
for a period of time.
Dust in indoor unit is blown out
The unit emits odor When the unit is operating
The room odor absorbed by the unit is blown out
again
Indoor unit still runs
after switch off
After every indoor unit
receives the "stop" signal, fan
will keep running
Indoor fan motor will keep running 20-70 seconds
to use excess cooling and heating and prepare for
the next operation
Mode conflict
COOL or HEAT mode can not
be operated
When the indoor operating mode conflicts with
that of the outdoor unit, the indoor fault indicator
will flash and conflict will be shown on the wired
controller after 5 minutes. Indoor unit stops running
and the outdoor unit changes its mode of operation
to match the indoor unit, then the unit will go back
to normal. COOL mode doesn't conflict with DRY
mode. FAN mode doesn't conflict with any mode
Continuous low
speed fan operation
Cool or heat mode low speed
fan operation after setpoint
temperature achieved
Functionality ensures accurate temperature control
for the conditioned space
NOTE:
If the problem persists after checking the above items and taking appropriate measures,
please stop operation of the unit immediately and contact your local service agency or
dealer. Diagnostics and repairs should be completed by a professional service technician.
28
Floor and Ceiling Unit
