7
Troubleshooting
The efficiency of compressor is low
Replace the compressor
Outdoor temperature is too high
You can install the rain-proof and sun-proof board. If the
cooling air is still insufficient, you are suggested to
replace the A/C
Whether the cooling(heating) load is proper
Check the forecast cooling(heating) load
The air tightness
in room
is not good.
People
com
e
in and
go
out frequently.There
are heating
devices in the room
Keep the air tightness well. Try not to use the electric
appliances with a large quantity of heat
The setting temperature of temperature controller is
too high or the temperature controller is damaged
Adjust the setting temperature; if the temperature
controller is damaged, please repair or replace it
Main switch is damaged
Repair or replace the main switch
Wrong wire connection
Check the circuit and connect the wire according
to the electric circuit diagram correctly
Fan capacitor is damaged
Replace the fan capacitor with the same model and
specification
The motor winding is broken circuit or short circuit,
or the built-in temperature limiting device is broken
due to overheating
Replace those parts with malfunction
Wrong wire connection
Check the circuit according to the electric circuit diagram
Capacitor of the compressor is damaged
Replace the capacitor of compressor with the same
model and specification
Compressor motor is burnt out
If the totally-enclosed compressor’s motor winding is
detected that it’s short circuit and broken circuit, please
replace the compressor with the same model and
specification.
Compressor is stuck or it can't run smoothly
Knock the compressor’s outer case with rubber bar or
hammer (underlay with wood block), if the compressor
still can’t startup, please replace the compressor
Main switch is damaged
Repair or replace the main switch
The setting temperature for temperature controller
is too high or temperature controller is damaged
Adjust the setting temperature; if the temperature controller is
damaged, please repair it or replace it
After the unit is energized,
compressor won't be started
up
After the unit is energized,
compressor won't be started
up
After the unit is energized,
compressor won't be started
up
A/C can run but
can't cooling
