owner’s manual
6
Table.10-1
Dust is blown out of the indoor unit.
When the air conditioner resumes service after a long period out
of service, the dust in the indoor unit will be blown out.
The indoor gives out smell
The indoor unit absorbs the smell of the room, furniture or
smoking, and gives it out when running.
Shift from cooling mode to air supply mode.
In order to prevent frosting of the indoor heat exchanger, the air
conditioner shifts to the air supply mode automatically, and
resumes to cooling mode in a short time.
When the room temperature decreases to the set temperature,
the air conditioner will shut down the compressor automatically,
and shifts to the air supply status. After the room temperature
rises, the compressor will restart. The action of the compressor
in the heating mode is the contrary.
If any of the following exceptions occurs, stop operation of the
air conditioner immediately. Turn off the power switch, and
contact the local aftersales service center of manufacturer:
The RUN indicator blinks quickly (2 blinks per second).
After turning off the power switch and then turning it on again,
that indicator still blinks quickly.
The receiving function of the remote controller fails, or the
start/shutdown operation is abnormal.
The fuse blows out frequently, or the circuit breaker protection
occurs frequently.
Foreign substance or moist enters the air conditioner.
The indoor unit leaks water.
Other exceptions occur.
If the air conditioner fails but does not meet the foregoing
phenomena obviously, check the system in the following
procedure:
10.
FAULTS OF AIR CONDITIONER AND
CAUSE
11.
FAULTS OF REMOTE CONTROLLER
AND CAUSE
Symptom
The
system
does
not run
Possible causes
Way of handling
Power supply fails
The power switch is not
connected
The fuse blows out or
the circult breaker
snaps of
The remote controller or
the wire controller fails
Operate it after power
supply resumes
Connect the power
supply properly.
Replace the fuse or
check whether
electric leakage
occurs.
Check the remote
controller or wire
controller.
The set temperature is
improper
3-minute protection of
the compressor
The set temperature is
lower than the room
temperature during the
cooling. Or the set
temperature is higher
than the room
temperature during the
heating.
The air
conditioner
sends air
out but
cannot
provide cool
air at all
The unit
keep
starting up
and
shutting
down
frequently
The refrigerant is
excessive or
deficient.
Air or noncondens-
able gas exists in the
refrigerant loop.
The compressor fails.
The voltage is too
high or too low.
The refrigerant loop is
obstructed
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.
Cleanse the condenser
Cleanse the filter
Remove foreign matters
to keep well ventilated.
Close all windows and
doors.
Use curtains or jalousie
to obstructsunlight.
Reduce heat sources
The cooling effect of the
air conditioner is
deteriorated (but normal)
Detect leak, and fill the
refrigerant of a correct
quantity
The outdoor environ-
ment temperature is
lower than -7°C
The door or window is
not closed tightly
The refrigerant is leaked
or the replenishment is
deficient
Use a heating device.
Close doors and
windows properly
Detect leak, and fill
the refrigerantof a
correct quantity.
The condenser of the
outdoor unit or indoor
unit is too dirty
The filter is blocked
The intake orifice or
exhaust orifice of the
outdoor/indoor unit is
blocked
The door or window is
open
Directly exposed to
sunlight
Too many heat
sources
Too high outdoor
environment tempera-
ture
The refrigerant is
leaked or the
replenishment is
deficient
The
cooling
effect is
poor
The
heating
effect is
poor
Before requesting for maintenance or repair, inspect the follow-
ing:
