Service Manual
Installation and Maintenance
42
The system stand is not stable.
Fix the stand or install again.
Foreign object exists in the unit.
Take out the foreign object.
Loose of screw
Tighten the screw.
Check if the ground leg is stable.
The system is not placed levelly.
Adjust the location of the unit.
Abnormal noise and
vibration
The installation of compressor is not proper
and the ground leg is not stable.
LED display is found short of stroke.
The LED frame is not properly fixed.
Fix the LED frame properly.
LED display flashes or when pressing
the transmit button the entire screen is
displayed.
Replace the battery
Shortage of battery capacity
Replace the battery
Shortage of battery capacity
Receiving distance of remote control
is short
Protector is activated
due to too overheat
of compressor.
Shortage or too much of refrigerant
Adjust the volume of refrigerant
The capillary is block and the sucking temperature
Change capillary
is increased.
Compressor does not run, jammed or blocked,
and the discharge valve is damaged.
Change compressor
Check with a multimeter and see if the contacts of
Failure exists in the protector.
compressor are normal when they are not overheated. I
f not, change the protector.
The compressor is
frequently ON/OFF.
Abnormal power voltage
The system is of a bad heat sinking and the
Check for the causes. Improve the power supply
conditions,and add voltage regulated power supply.
ventilation is poor.
The air conditioner capability does not match the
area of the room, i.e. so called "Big system,
small room".
Select an air conditioner meeting the area of the room.
Clean the dust deposited on the system and remove
obstacles at the aid discharge vent.
Notice: The above malfunction analysis is only for reference. There is no malfunction related to heaitng for cooling only unit.
