SiK011003
62
Troubleshooting
Troubleshooting
Improper set of temperature
Adjust set temperature
Check the forecasted load of cooling (heating)
Poor
COOL(HEAT)
operation.
Replace the compressor
Replace the four-way valve
Malfunction of four-way valve
Blockage of cooling system
Air filter were blocked
Clean the filter
Fan speed was set too slow
Motor damage
The outdoor temperature is too high.
Replace the motor
If cooling (heating) load
is proper
Malfunction of
refrigerant flow
Heat insulation for the connection
pipes of the indoor unit and the out-
door unit is bad.
Air circulation
is insufficient
The air tightness is not enough. People
come in and out too frequently. There
are heating devices indoors.
Keep certain air tightness indoors, try not to use
electricalappliance with large quantity of heat
Properly install the rainproof plate or the sunproof
plate. If the maximum cool air still can not meet the
requirement, it is suggested to replace the air
conditioner.
The installation position of the
outdoor unit is not appropriate.
Fan rotation
speed becomes
low
Block of outdoor heat
exchanger
Good ventilation must be provided for
the installation position of the outdoor
unit.
Capacitor or PCB
damage
Replace the
capacitor or PCB
To set the fan speed to high or
middle speed
Clean the dust accumulated on the sur-
face of the heat exchanger.
Make sure that heat insulation for the thick and thin
pipes is good. Heat insulation must also be provided
for the joint and the exposed part of the copper pipe.
Judge whether the system is
blocked by observing the conden-
sation of evaporator and the pres-
sure value of the high pressure
manometer and take measures to
deal with the system.
Leakage between the high pres-
sure and the low pressure inside
the compressor
The refrigerant has leakage or is
insufficient
Check and fill the leakage, then
vacuumize it and supplement the
refrigerant as required