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Protector has malfunction
Reveiving distance of remote control
is too short
LED display is found short of stroke
LCD display fl ashes or when pressing
the transmit button the entire screen
is displayed.
Replace the battery
Fix the LCD frame properly
Replace the battery
Replace the battery
The LCD frame hasn’t fi xed well
Battery’s capacity is insuffi cient
Capillary is blocked and the suction
temperature is rising
Refrigerant is insuffi cient or super abundance
Supply voltage is abnormal
The unit hasn’t placed fl atly and stable Adjust the unit’s position
There are foreign objects on the unit Get rid of the foreign objects
Screws are loosened Tighten the screws
The compressor can run smoothly or is stuck.
The air discharge valve is damaged.
The air conditioner capability does not match
the area of the room, i.e. so called “Big system,
small room”.
The radiating for evaporator and condensor is
not good; Poor air ventilation
Compressor
is ON-OFF
frequently
Vibration and
noise are
abnormal
Protector is
activated due to
overheating of
the compressor
The unit’s support is unstable Strengthen the support or refi t it
The compressor hasn’t installed well and the
base is unstable
Check whether the base is fi rm
Adjust the quantity of the refrigerant
Check the reason, improve the power supply condition and
add the regulated power supply
Get rid of the dust on the evaporator and condensor, remove
the obstacles at the air outlet
Use the multimeter to check whether the contact point of the
compressor is conducted at the timer of non-subheating. If it
can’t be conducted, please replace the protector.
Replace the compressor
Slect the A/C which is applicable to the room areas
Replace capillary
As for the above malfunction analysis, there aren’t malfunction related to heating for the cooling only unit.