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Air Handlers
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
Different running indicator flashing light means different system failure.
malfunction
Indoor Jumper cap failure
Indoor fan failure
Indoor tube temperature
sensor failure
"Malfunction"
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
Running Indicator status
Light out 3S then flash
once
Light out 3S then flash
twice
Light out 3S then flash
four times
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.
Flash means light on
0.5S then light out 0.5S
24
Reason
Remark
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