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Excessive
refrigerant system
Compressor own
fault
Supply Voltage
Value
Compressor loose
wiring
Pressure
protection switch
fault
Expansion valve is
too loose,
The expansion
valve bulb failure
or incorrect
mounting position
High
Summer too much
pressure
refrigerant
protection
perfusion
alarm
Outdoor
condenser fouling
Axial fan does not
turn
Systems non-
condensable gases
mixed with
Fan
Airflow is too large
overload
Excess refrigerant discharged
within the system
Compressor axle, the motor coil
insulation in question must be
replaced compressor
Negative power supply voltage
instability factor
Good re-tighten the compressor
terminal
Replace the pressure protection
switch
Appropriately adjusting the
opening degree of the expansion
valve
An expansion valve replacement,
and proper installation position
bulb
Remove excess refrigerant, the
high pressure in the
control2.3~2Between .8Mpa
Cleaning the surface of dust and
dirt condenser
Check axial fan static resistance
and the grounding resistance,
such as fan coil burning should be
replaced;
Height from the system gas
discharge portion, the system re-
evacuated if necessary, charge
fluoride work
Check the filter installation,
whether to select an error
windshield
22
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