GE PRO AIR 107, Service Manual

Page: 100 / 104

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99
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Failure analysis of common types of systems
Adaptable for systems except PRO AIR I109 IN / PRO AIR I109 OUT, PRO AIR I112 IN / PRO AIR I112 OUT
When the breaker is set ON, it will trip at
once Measure the insulating resistance for
grounding to confirm whether there is
electrical leakage or short circuit in
the unit
Breaker tripped or
fuse burnt out
Circuit breaker is tripped off in a few
minutes when air conditioner is set to “ON”
Insulation failure for circuit or
component of air conditioner; insulation
is broken through after heated, leading
to short-circuit or leakage. Measure the
insulation resistance or eliminating one
by one. Replace the circuit breaker if
there is failure in it.
No power supply
Check power supply circuit
The power plug is not well inserted or
has bad contact
Check and insert the plug tightly
The protector pipe of the controller blows.
Replace the protector pipe of the
controller
Transformer line is shed off or with bad
contact, or transformer is with failure.
Fasten the connection. Measure the
output voltage of transformer. Change
the transformer if is not correct.
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)
Controller is damaged Replace the controller
The power of the remote controller is not
enough.
Replace the battery
The remote controller has malfunction.
The receiver is loose or has bad contact.
The remote
controller does not
receive
signals(after it is
powered, the
buzzer will sound,
unless it has
malfunction)
Receiver head is damaged.
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 remote
controller.
Too low supply voltage
Check the voltage of power supply. If it is lower than
the rated voltage for 10%, check for the reason.
Improve the power supply conditions,
Failure in controller(IC2003 is damaged, relay
coils are in parallel, capacitor is leak,or relay
is damaged)
Replace the controller
Connection is shedding off or is mistaken. Connect correctly according to the diagram.
When unit is
cooling or heating,
both compressor
and outdoor fan
don't run
Improper setting of temperature Adjust the set temperature
Air
conditioner
cannot star
t up