YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
YMGI: Your Modern Green Idea
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CHECKING UNITS PRIOR TO CONTACTING YOUR TECHNICIAN
Do not attempt to repair the air conditioner yourself. An Incorrect repair may cause electric shock or fire, so please
contact an authorized service center for professional repair.
Problem Handling
The conditions listed below are not classified into errors.
Conditions
Causes
The unit does not run
After restarting the unit after it has stopped.
The overload protection switch of the unit has delayed unit
startup for three minutes.
As soon as power is turned on
The unit will be on standby for approximately one minute
The unit blows out mist
When the cooling operation starts.
The high humidity indoor air is cooled quickly causing
condensation
The unit generates
noise
The unit “clatters” on start up.
This sound is generated during the initialization of the
electronic expansion valve.
The unit “swishes” during cooling operation.
The sound is generated when refrigerant gas runs inside the
unit.
The unit “swishes” when it is on or after running.
The sound is generated when refrigerant gas stops flowing.
The unit “swishes” when it is on or after running.
The sound is generated when the drainage system operates.
The unit “squeaks” when it is on or after running.
The sound is produced by friction generated by the skin plates
that can swell and contract due to temperature changes.
The unit blows out
dust.
When the unit is restarted after not being used for
prolonged period.
Dust that has settled inside the unit is being blown out.
The units emits odor.
When the unit is running.
Odors absorbed in the filters are blown out again. Check the
filters.
Following checks prior to contacting an authorized service center may save you time and costs.
Phenomenon
Normal or Abnormal
The unit doesn't deliver cooling or heating,
immediately after the unit is restarted (remote
control or power resuming).
If the unit is powered off, and then restored, it will not run the compressor until 3 minutes later.
This is normal 3-minutes restarting protection due to high internal refrigerant pressure.
The unit emits a smell.
For a new unit, some of the odor is normal.
For any bad or abnormal odor, shut off the unit and check the unit and the area around the
unit for anything visible that could cause the odor. Call a technician if necessary.
Hearing the sound of "water flow" inside the
unit.
Normally this is due to refrigerant flowing through the coils.
Mist is blowing out of the unit.
Normally this happens during cooling startup period, when the indoor air is hot and humid.
Hearing creaking noise during unit starting or
shutting off.
Normally this is caused by the expansion or contraction of components due to temperature
changes.
The unit doesn't operate at all.
1) Is power shut off or lost?
2) Is the TIMER set up?
3) Is the circuit breaker engaged, or tripped?
4) Is the fuse connected, or blown?
5) Is the voltage too high or low?
6) Is the flow control or other switches breaking the circuit?
7) Is the unit under the 3-minute restarting protection period?
8) Does the remote control have power?
Unit doesn't respond to remote control.
1) Dose the remote control have battery power?
2) Is the remote control pointing at sunshine or bright lights?
3) Is the remote control signal blocked?
4) Is the remote control too far away from indoor unit?
5) Is the fuse on indoor unit blown?
6) Is the indoor unit powered on?
7) Is the indoor unit transformer good?
8) Is the indoor unit control board good?
Cooling (heating) is weak.
1) Is the set temperature too high or too low?
2) Is the filter dirty?
3) Is the air vent blocked?
4) Is the unit undersized?
5) Is there a window or door opened?
6) Is the unit refrigerant at a lower level?
7) Is the outdoor temperature too hot or cold?
8) Is fan speed set at a low speed?
