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Trouble shooting
Breaker tripped or fuse
burnt out
When set the breaker to ON, it will
trip off at once.
Test the insulative resistance for
earthing, to confirm whether unit
is current leakage or not
When turn on the unit, the breaker
will trip in a few minutes
Check the breaker and test
the resistance.
No power supply
Check the circuit
The power plug is not connected well
or poor connected.
Check and insert the plug tightly
Wrong wire connection between the
indoor unit and outdoor unit.
According to the electric diagram to
check the wire and connect correctly
Check the wireless remote controlMalfunction of wireless remote control
Replace the fuse of controller
Fuse of controller was burnt out
Please fix the connection wire
firmly
Whether the wire connection between strong
current board and light current board of the contr-
oller is firmed ?
Both indoor unit
and outdoor unit
can't start up
Is the transformer output wire
connected well, is there voltage output?
Please fix connection wire firmly,
check output voltage.
Poor COOL(HEAT) operation
Air conditioner can not start up
Is the setting temp. suitable?
Adjust the setting temp.
To check the pretested COOL(HEAT)load
Is COOL(HEAT) load suitable?
Malfunction of 4-way valve
Replace the 4-way valve
Charge the refrigerant
Replace the compressor
To open the valve gate adequately
Clean the filter
To set the fan speed to high or
middle speed
Outdoor unit should be install in a place with well
ventilation, and should be installed the awning.
Outdoor unit installation place is improper
Short of air volume
Malfunction of
refrigerant flow
Short of refrigerant volume
Malfunction of compressor
Short of valve gate flow volume
Air filter were blocked
Fan speed was set too slow
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