owner
’
s manual
Solution
Clean the heat exchanger.
Clean the air filter.
Eliminate all dirties and make air
smooth.
Close doors and windows.
Make curtains in order to shelter from
sunshine.
Reduce heat source.
AC cooling capacity reduces (normal).
Symptoms
Causes
Unit does not start
Air flowing normally but
completely can't cooling
Units start or stop frequently
Low cooling effect
Low heating effect
Power failure.
Power switch is off.
Fuse of power switch may have burned.
Batteries of remote controller exhausted
or other problem of controller.
Temperature is not set correctly.
Be in 3 minutes protection of
compressor.
Refrigerant is too little or too much.
Airor no concreting gas in the
refrigerating circuit.
Compressor is malfunction.
Voltage is too high or too low.
System circuit is blocked.
Wait for the comeback of power.
Switch on the power.
Replace the fuse.
Replace the batteries or check the
controller.
Set the temperature properly.
Wait.
Check leakage, and rightly recharge
refrigerant.
Vacuum and recharge refrigerant.
Maintenance or change compressor.
Install manostat.
Check leakage and rightly recharge
refrigerant.
Use heating device.
Close doors and windows.
Check leakage and rightly recharge
refrigerant.
Outdoor unit and indoor unit heat
exchanger is dirty.
The air filter is dirty.
Inlet/outlet of indoor/outdoor units is
blocked.
Doors and windows are open
Sunlight directly shine.
Too much heat resource.
Outdoor temp. is too high.
Leakage of refrigerant or lack of
refrigerant.
Outdoor temperature is lower than 7 C .
Doors and windows not completely
closed.
Leakage of refrigerant or lack of
refrigerant.
Table 8-2
Find reasons and solution.
Symptoms
Causes
The fan speed can not be
changed.
Check whether the MODE
indicated on the display is
"AUTO"
Check whether the MODE
indicated on the display is
"DRY"
When the automatic mode is
selected, the air conditioner will
automatically change the fan
speed.
When dry operation is selected,
the air conditioner automatically
change the fan speed. The fan
speed can be selected during
"COOL" , "FAN ONLY", and "HEAT".
The remote controller signal is
not transmitted even when
the ON/OFF button is pushed.
Check whether the batteries
in the remote controller are
exhausted.
The power supply is off.
No receiving tone sounds
from the indoor unit even
when the ON/OFF button is
pressed.
Check whether the signal
transmitter of the remote
controller is properly directed
to the infrared signal receiver
of the indoor unit when the
ON/OFF button is pressed.
Directly transmit the signal transmitter
of the remote controller to the infrared
signal receiver of the indoor unit, and
then repeatly push the ON/OFF button
twice.
The indication on the display
disappears after a lapse of
time.
Check whether the timer
operation has come to an
end when the TIMER OFF
is indicated on the display.
The air conditioner operation will
stop up to the set time.
The TIMER ON indicator
goes off after a lapse of
certain time.
Check whether the timer
operation is started when
the
TIMER ON
is indicated
on the display.
Up to the set time, the air conditioner
will automatically start and the
appropriate indicator will go off.
The TEMP. indicator does
not come on.
Check whether the MODE
indicated on the display is
FAN ONLY
The temperature cannot be set during
FAN mode.
Solution
Table 8-3
