YMGI, Engineered Comfort Products for A Sustainable and Efficient Green World!
YMGI: Your Modern Green Idea
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The following situations are not operation failures.
Problem
Time of occurrence
Cause
Mist comes from the air
conditioner.
During operation.
If the unit is running under high humidity, the wet air in
the room will be quickly cooled down.
The air conditioner
generates some noise.
System switches to heating mode after
defrosting
Defrosting process will generate some water, which
will turn to water vapor.
The air conditioner is buzzing at the
beginning of operation.
Thermostat will be buzzing when it starts working. The
noise will become weak 1min later.
Dust comes from the air
conditioner.
When the unit is turned on, it purrs.
When the system is just started, the refrigerant is not
stable. About 30s later, the purr of the unit becomes
low.
About 20s after the unit first enables the
heating mode or there is refrigerant brushing
sound when defrosting under heating.
It’s the sound of 4-way valve switching direction. The
sound will disappear after the valve changes its
direction.
There is hissing sound when the unit is
started or stopped and a slight hissing
sound during and after operation.
It’s the sound of gaseous refrigerant that stops flowing
and the sound of drainage system.
There is a sound of crunching during and
after operation.
Because of temperature change, front panel and other
components may be swelled up and cause abrasion
sound.
There is a hissing sound when the unit is
turned on or suddenly stopped during
operation or after defrosting.
Because refrigerant suddenly stops flowing or
changes the flow direction.
The unit starts operation after being unused
for a long time.
Dust inside the units come out together with the air.
The air conditioner
generates an odor.
During operation.
The room smell or the smell of cigarette comes out
through the units.
Check the above items and use the corresponding corrective measures. If the air conditioner continues to function poorly,
please stop the air conditioner immediately and contact YMGI
’s authorized local service center. Ask a professional HVAC
Technician to check and repair the unit.
