UNIT MAINTENANCE &
SER
VICE GUIDE
UNIT MAINTENANCE &
SER
VICE GUIDE
P30 OF 44
P29 OF 44
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World !
TROUBLE SHOOTING
Dust from the units
Discharged air smells
Starting operation after not using for a
longtime
During operation
Dust entered into the unit and blown
out at re-starting. Clean filter and coil
This is caused by the odors in the room
which have been left or kept on the
filter or coil, clean the filter and coil
This is caused by the panel expanding
or contracting due to temperature
change in some structural parts
Cracking noise can be heard during or
after operation
The unit does not
operate when
Mist is emitted
Outdoor unit is hot
Noise
Restart right after stopping
Press SET TEMP. and then release
immediately.
Power is switched on
When cooling
After the unit is stopped
Buzz is heard at starting
Sound of hiss like running water can
be heard during operation
A "shuh" 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
Once the unit is stopped, it stays idle
for about 3 minutes to protect the
compressor and the unit from any
potential damage
Wait for 1 minute
Room air is chilled rapidly and
becomes foggy
Compressor is emitting heat to get
ready for restarting
It's the starting sound of thermostat
and will turn low after 1 minute
This is caused by the refrigerant
flowing inside the unit
This is the noise of refrigerant caused
by flow stop and flow change
The noise is heard when the drainage
pump is in operation
No need to do anything
NORMAL OCCURRENCE
When normal
occurrence happens
Normal Occurrence
Cause and remedy of normal
occurrence
TROUBLE SHOOTING
Warning
* In case of something abnormal (such as bad smell), shut off the power switch immediately and contact service
center.
* Do not repair the unit by yourself. Incorrect service may cause fire, please contact service center.
* The appliance should not be used by children without supervision.
Check these items shown below before contacting service center
Note:
If trouble still exists after checking the above items, please contact service center.
Power off or fuse broken
Power off
Loose plug
Batteries for remote installed incorrectly
Out of the remote controlling range
Object at the air intake and air outlet of
the air conditioner
Object at the air intake and air outlet of
indoor and out door units
Wrong temperature setting
Low fan speed
Air direction is not correct
Doors or windows are open
Direct sunshine
Too many people in the room
Too many heating sources
Dirty air filter
The system does not
operate at all
The system stops right
after it is started
Cooling and heating is
abnormal
Change fuse or replace fuse
It will restart when power is on
Put the plug into place
Keep distance in 8m or less
Remove them
Remove them
Refer to REMOTE CONTROL-
KEY NAMES AND FUNCTIONS
Close them
Clean it
Phenomenon
Cause
Corrective Measures
Faulty Batteries / Install
batteries properly
Close the curtain or blind.
Refer to REMOTE CONTROL-
KEY NAMES AND FUNCTIONS
Refer to REMOTE CONTROL-
KEY NAMES AND FUNCTIONS
