Cassette Type Fan Coil Unit Owner's Manual
14
5 Troubleshooting
Warning
♦
In case of something abnormal(such as bad smell), shut the power switch immediately and
contact service center. Do not repair the air conditioner by yourself, because wrong repair may
cause fire, please contact service to do it for you.
♦
Check item shown below before contacting service center.
Symptom
Cause
Corrective Measures
The system dose not
operate at all.
Pause off or fuse broken.
Change pause or replace fuse.
Power off
Loose plug
Batteries of remote controller fail.
Replace batteries.
Out of the remote controller range.
Keep distance in 8m or less.
The mode is wrong.
Check the operation mode of the unit.
Cooling and heating is
Abnormal.
Object at the air intake and air outlet
of the unit.
Remove them
Doors or windows are open.
Close them
Direct sunshine.
Close the curtain or windows blind.
Too many heating sources.
Too many people in the room.
Dirty air filter.
Clean it.
Water flow volume lower.
Check the water-system and valve.
The temp of water is higher or lower.
NOTE
: If trouble still exists after checking the above items, please contact service center.
♦
The following are not troubles
Trouble
Cause
The unit does not
operate.
Power is switched on.
Wait for l minute.
Mistis emitted.
When cooling.
Room air is chilled rapidly and will turn
low after l minute.
Noise
Buzz is heard at starting.
It is the starting sound of thermostat
and will turn low after I minute.
A “such” sound which is heard at the start
or immediately after the stop of operation
or which is heard at the start or immediately
after the stop of defrosting Operation.
A continuous low :shah ' sound is heard
when the system is in cooling operation or at
a stop.
This is the noise of water caused by
flow stop and flow change.
The noise is heard when the drainage
pump is in operation.
Cracking noise can be heard during or after
operation.
This is caused by the panel expanding
or contracting due to the change in
temperature.
Dust from the units Starting operation after not using for a long
time.
Dust absorbed by the unit blows out.
Wind from the
outlet smells.
During operation.
This is caused by the odors in the
room which have gotten onto the unit.
