CHECKING THE REFRIGERATING CYCLE
1. Troubleshooting procedure (No operation, No heating, No cooling)
Connect U,V,W phase leads to the
power module again and operate the
air conditioner.
Is the self-diagnosis lamp mode as
shown on the right?
Stop to operate and check the gas
pressure in balancing mode.
Gas leaks.
Repair and seal refrigerant.
YES
Normal
(0.39-0.98 MPaG)
(4-10 kg/cm
Gas leaking
(less than 4kg/cm
G)
2
(less than 0.39 MPaG)
Perform a final check of operation.
(JUDGING BETWEEN GAS LEAKAGE AND
COMPRESSOR DEFECTIVE)
Lighting mode
Blinks
Self-
2 times
diagnosis lamp
LD301
Time until the
Approx. 10 seconds
lamp lights
Possible
malfunctioning
part
G)
2
Checking the system power module
The compressor is defective. Replace it
and seal refrigerant.
(
If the compressor checker for an
inverter type air conditioner is
available, re-check using it.
– 112 –
Blinks
Blinks
Blinks
Blinks
3 times
4 times
5 times
6 times
Within
Approx.
Approx.
10
30
seconds
seconds
Gas
Compressor
leakage
Blinking
off
When the
self-diagnosis lamp
lights in the same
condition as above.
Blinks
8times
Approx.
10
seconds
Compressor
)