Johnson Controls YVAHP0721CW Series, Руководство по обслуживанию

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SM-16007
3-37
TROUBLESHOOTING
[ at Fixed Speed Compressor Failure ]
((H,Y)VAHP072B(3,4)1CW and (H,Y)VAHP096B(3,4)1CW)
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fails.
(a) Procedures
1. Turn OFF all the main switches of the outdoor and indoor units.
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failed outdoor unit will stop the operation. If two compressors are stopped simultaneously, the
stoppage cause is supposed to be d1-30. *1
3. Turn ON the power supply.
4. Start the operation with the wired controller.
PROCEDURE REMINDERS:
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Do not perform an emergency operation when the insulation resistance is 0
:
.
The other compressors may be damaged because there is a possibility that refrigerant oil is oxidized.
• In this emergency operation, compressor frequency cannot be controlled normally.
Therefore, an alarm code “07”, “43”, “44”, “45”, or “47” may be indicated on the LCD.
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Therefore, replace it with a new one as soon as possible.
• Turn OFF DSW5 of the outdoor unit PCB after replacing the compressor.
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(DSW5)
<Alarms Corresponding to Fixed Speed Compressor Failure>
23: Abnormality of Discharge Gas Thermistor
39: Abnormality of Running Current at Fixed Speed Compressor
ON
1 2 3 4 5 6
0
8
7
5 4
3
2
1
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2 3 4 5 6
ON
1 2
SEG2 SEG1
DSW1
DSW2 DSW3
DSW5
DSW7 DSW6
DSW4
PSW2
PSW5
PSW1
PSW3
PSW4
RSW1
DSW10
9
6
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1: Outdoor Unit PCB