Hitachi RAC-50WX8 - Page 133

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CHECKING THE REFRIGERATING CYCLE
2.96｛30.14｝
2.62｛26.72｝
2.31｛23.58｝
2.03｛20.73｝
1.78｛18.14｝
1.55｛15.79｝
1.34｛13.66｝
1.15｛11.74｝
0.98｛10.02｝
0.83｛ 8.48｝
0.70｛ 7.10｝
0.58｛ 5.89｝
0.47｛ 4.81｝
Outdoor air
temperature
(℃)
50
45
40
35
30
25
20
15
10
5
0
-5
-10
（R410A)
Lo Hi
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.
●
Checking the 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.
Gas leaks.
Repair and seal refrigerant.
Perform a final check of operation.
YES
Gas leaking
Lighting mode
Blinks
2 times
Blinks
3 times
Blinks
4 times
Blinks
5 times
Blinks
6 times
Blinks
8 times
LD301
Approx. 10 seconds
Compressor
Blinking Off
Time until the
lamp lights
Possible
malfunctioning
part
Approx.
10
seconds
Approx.
10
seconds
Within
approx.
30
minutes
Gas
leakage
Compressor
Self･
diagnosis Lamp
Outdoor
unit
Manifold
valve
When the
self-diagnosis lamp
lights in the same
condition as above.
Normal
(JUDGING BETWEEN GAS LEAKAGE AND COMPRESSOR DEFECTIVE)
Mpa(G)｛kgf/cm
2
(G)｝
Chargeportpressure