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Failure and analysis
The breaker trips at once when it
is set to "ON".
Measure insulation resistance to ground to see
if there is any leakage.
Trip of breaker or blow
of fuse
The breaker trips in few minutes
when it is set to "ON"
Check power supply circuit.
Check if the plug is properly plugged in and
make the loose contact firm.
Change controller fuse
Check remote controller
Change batteries
Change controller
Adjust setting temp.
Improper setting of temperature
Wire loose or wrong connection
In cool, heat mode,the
outdoor
unit and compressor
will not run.
Correctly wire according to the drawing
Power voltage is too low
Remote controller malfunction
Receiver is broken
Controller is broken
Receiver loose or poor connection
No power
Fuse of controller burnt out
Remote controller is short of power
Power plug is not well plugged in and poor con-
nection
Fasten the wiring; measure the output
voltage of the transformer, if it is
incorrect, change the transformer
Air conditioner can not start up
The air conditioner
does not react after
it is powered ( after
the plug is inserted,
the buzzer does
not sound and the
remote startup has
no response)
The remote controller
does not receive
signals (after it is
powered, the buzzer
will sound, unless it
has malfunction)
The circuit or the part of the air conditioner has
malfunction. They heat and break the insulation
and lead to short circuit or creepage. Measure
the insulation resistance or eliminate the malfunc-
tion one by one. If the breaker itself has
malfunction, then replace the breaker.
The transformer connection is loose or has bad
contact or the transformer has malfunction
First, press the manual switch button AUTO,
if there is no response,check based on the
above methods. If it runs normally after
pressing the button,check again whether the
installation position and the connection wire
of the reception head is correct. If it is
correct,then replace the receiver or the re-
mote controller.
heck the voltage. If it is lower than 10£¥ of the rated voltage, check the
cause, improve the power supply condition and add the stabilized voltage
power supply.
Controller malfunction (IC2003 broken,
creepage of parallel capacitor of relay loop,
relay is broken etc.)
Note: When replacing the controller, make sure insert the wire jumper into the new controller, otherwise, the running indicator off 3s,
blink 15 times, (the dual eight will display C5) but cannot turn on the unit.