4
owner's manual
Check it again
No operation
Whether the power is cut.
Whether manual power switch is turned on.
Whether the fuse is melted.
Whether the protection device works.
(operation lamp is lightened)
Whether it is the time set.
Insufficient cooling
Insufficient heating
Whether the inlet and outlet of outdoor unit is
blocked.
Whether the door and window are open.
Whether the air filter is blocked by dust.
Whether the air deflector is in the right place
Whether fan speed is slight or whether it is in
FAN mode.
Whether the temperature is set properly.
Whether setting COOL and HEAT
simultaneously. (Indicator light Standby or No
Priority on panel is lightened)
Please read the following illustration(before apply for servicing)
Troubles Causes
Not malfunction
White mist or water
The sound of “hiss”
Outdoor unit
Bad odor
Operation lamp flashes
No priority of Standby on panel is
lightened
Thawing frost light flashes in 30s
Indoor unit
FAN function stop automatically to defrost. It is
the start and stop sound of the solenoid valve
At the beginning and the end of the running
process, sounds like water flow in valve occurs,
which will be amplified in 3~15 minutes, this is
caused by dehumidifying process of refrigerant
current.
Slight hiss is caused by heat exchanger as
temperature changes.
Pieces of the wall, carpet, furniture, cloth,
cigarette, cosmetics are adhere to the unit.
Switch on the power after the power cut.
Other equipment preheating process stops
cooling operation.
The operator sets an opposite mode against
the fixed cooling and heating mode.
FAN mode stops to avoid cold air blown out.
The master unit with slave units for different
purposes, when abnormal accident happen,the
director will illustrate.
When mode switches
Start or stop operation automatically
Wrong operation on timer.
Table.4-1