Service Manual
Installation and Maintenance
23
Refigerant is insufficient or superabundance
Capallary is blocked and the suction temperature
is rising
Malfunction of the protector
Compressor is
overheating to activate
the protector
Swing motor's torque
is insufficient
Wrong wire connection
Swing blade can't rotate
Supply voltage is abnormal
Compressor is ON-OFF
frequently
Remote reveiving distance is too short
Battery's electricity is insufficient
Replace the battery
Adjust the volume of the refrigerant
Replace capillary
Replace the compressor
Check the reason, improve the power supply
condition and add the regulated power supply
Controller is damaged(IC2003 is broken,
the swing relay can't sucted to close)
Get rid of the dust on the evaporator and condenser,
remove the obstacles at the air outlet.
use the multimeter to check whether the contact point
of the compresor is conducted at the timer of non-
subheating. If it can't be conducted, please replace
the protector.
The radiating for evaporator and condenser is not
good ; Poor air ventilation
Check whether there's mistake for the wire. If there
isn't mistake for the wire , please replace the relative
parts with malfunction
The A/C's capacity isn't match with the area
of the room areas
Select the A/C which is applicable to the room areas
The compressor can run smoothly or is stucked.
The discharge valve is damaged.
Battery's electricity is insufficient
Replace the battery
Screws are loosened
There are foreign objects on the unit
Unit's support is unstable
The unit hasn't placed flatly and stably
Tighten the screws
Get rid of the foreign objects
Strenthen the support or refit it
Adjust the unit's position
Check whether the base is firm
Fix the LED frame frame properly
The LED frame hasn't fixed well
Compressor hasn't installed well; the base isn't stable
Vibration and noise are
abnormal
LED display is found short of stroke
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displayed.
F1 displays on double-8 nixie tube of
display board
Unreliable connection of AC ambient temp.
sensor onto controller
Reconnect them or replace the temp. sensor
F2 displays on double-8 nixie tube of
display board
Unreliable connection of AC tube temp.
sensor onto controller
Reconnect them or replace the temp. sensor
