7
12. FAULTS OF REMOTE CONTROLLER
AND CAUSE
Before requesting for maintenance or repair, inspect the
following:
●
The refrigerant is
Detect leak, and fill the
refrigerant of a correct
quantity
Make a vacuum again
and fill the refrigerant.
Repair or replace the
compressor.
Install a voltage
regulator.
Locate the causes and
replace thepart.
●
excessive or deficient.
The unit
keep
starting
up and
shutting
down
frequently
●
Air or noncondensable
gas exists in the
refrigerant loop.
●
The compressor fails.
●
The voltage is too high
or too low.
●
The refrigerant loop is
obstructed
●
The condenser of the
outdoor unit or indoor
unit is too dirty
Cleanse the condenser
●
The filter is blocked
Cleanse the filter
The
cooling
effect is
poor
●
The intake orifice or
exhaust orifice of the
outdoor/indoor unit is
blocked
●
The door or window is
open
Remove foreign matters
to keep well ventilated.
Close all windows and
doors.
●
Directly exposed to
sunlight
Use curtains or jalousie
to obstructsunlight.
●
Too many heat
sources
Reduce heat sources
●
Too high outdoor
environment
temperature
The cooling effect of
the air conditioner is
deteriorated (but normal)
●
The refrigerant
is leaked or the
replenishment is
deficient
Detect leak, and fill the
refrigerant of a correct
quantity
The
heating
effect is
poor
●
The outdoor nvironment
temperature is lower
than -7°C
●
The door or window is
not closed tightly
Use a heating device.
Close doors and
windows properly
●
The refrigerant is leaked
or the replenishment is
deficient
Detect leak, and fill
the refrigerantof a
correct quantity.
Table 12-1
The shift function cannot be set
Symptom
Check item
cause
Check whether the
mode marked on the
screen is AUTO
When you select the
AUTO mode, the indoor
unit will select
“AUTO” for
the air
speed automatically
The wind
speed
cannot be
shifted
Check whether the
mode marked on the
screen is DEWET
When you select the
DEWET mode, the
indoor unit will select
“AUTO” for the air
speed
automatically.The aie
speed is selectable
only in
the“cooling”,“heating”
and “supply air” mode
Table 12-2
The transmitting symbol“▲”does not blink
Symptom
Check item
cause
When you
press
ON/
OFF
button,
the remote
controller
signal
cannot be
transmitted
Check whether the
batteries of remote
controller are low
When the batteries
are exhausted, the
signals cannot be
transmitted
Table 12-3
The temperature indicator dose not light up
Symptom
Check item
cause
The
temperature
indicator
does not
light up
Check whether the
mode narked on the
screen is Supply Air
In the Supply Air mode,
the temperature cannot
be set
Table 12-4
The display disappears
Symptom
Check item
cause
After a while,
the ON/OFF
display
disappears
Check whether the time
set on the timer has
expired
The air conditioner stops
running
because the set
time has expired
After a while,
the
TIMING
ON
display
disappears
Check whether the time
set on the timer has
expired
When it comes to the set
time of starting
operation
of the air conditioner,the
air conditionerwill start
running automatically,
and the corresponding
display will disappear.
