Hitachi RAC-50NX2, Руководство по обслуживанию

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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)
The values above are the theoretical ones.
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