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Air Handlers
Following circumstances are not malfunction.
Unit doesn't run.
Mist comes from the unit.
The unit emits noise.
The unit blows out dust.
The unit emits odor.
Indoor unit still runs after
switch off.
There are LED indicators on the main board of the indoor unit, which are used to
display the operating status and malfunction information of the unit.
LED indicator
Power Indicator
Running Indicator
"Malfunction"
When unit is started
immediately after it is
just turned off.
When power is turned
on.
Under cooling.
Slight cracking sound
is heard when just
turned on.
There is consecutive
sound when cooling.
There is sound when
unit starts or stops.
There is slight and
consecutive sound
when unit is running or
after running.
When unit runs after no
operation for a long
period.
Operating.
After every indoor unit
receive "stop" signal,
fan will keep running.
Color
Red
Green
Overload protection switch
makes it run after 3 minutes
delay.
Standby operating for about 1
minute.
Indoor high humidity air is
cooled rapidly.
It is noise when electronic
expansion valve initialization.
That's sound for gas refrigerant
flowing in the unit.
That's sound for gas refrigerant
stops flowing.
That's sound for operation of
drainage system.
Dust in indoor unit is blew out.
The room odor absorbed by the
unit is blew out again.
Indoor fan can be set as "ON"
or "AUTO" mode. Under "ON"
mode, indoor fan will keep
running after switch off the unit.
Function
Indoor unit main board is powered on, Power
Indicator is on.
After detecting the indoor fan turn-on signal,
the running indicator light is on, when
detecting the indoor fan turning-off signal, the
running indicator light is off. When detecting
a system failure, the running indicator light
flashes.
26
Reason
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