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Service Manual
3-53
TROUBLESHOOTING
Alarm
Code
Activation of Protection Device in Outdoor Unit
Is CMC1 ON
when starting?
Does CMC1 turn
ON for more than
three seconds?
Yes
No
Normal O.U. PCB
Is the voltage between PCN2 #1
and faston terminal "S1" on
O.U. PCB correct*
2
during LED ON?
Yes
Is the protective device
still operating?
No continuity between #1
and #3 of PCN2, PCN16
on O.U. PCB.
Is PCN2 or PCN16
on O.U. PCB
loose?
Yes
Yes
Yes
Check activation of the following safety devices. Remove the cause after checking.
High Pressure Switch (PSH): 602psi (4.15MPa)
Faulty O.U. PCB
Faulty O.U. PCB
Restart after connecting
PCN2 or PCN16 on
O.U. PCB correctly.
Check wiring connection
except for O.U. PCB.
No (No Voltage)
No (No Looseness)
No
No
Model
Correct Voltage
between PCN2#1 and
Faston Terminal S1
High Pressure Switch
PSH1
(PCN2)
PSH2
(PCN16)
(H,Y)VAHP072B31S
(H,Y)VAHR072B31S
208-230V
ȅ
(H,Y)VAHP096 ~ 120B31S
(H,Y)VAHR096 ~ 120B31S
208-230V
ȅ
ȅ
(H,Y)VAHP072B41S
(H,Y)VAHR072B41S
220V
ȅ
(H,Y)VAHP096 ~ 120B41S
(H,Y)VAHR096 ~ 120B41S
220V
ȅ
ȅ
O
7KH581LQGLFDWRUUHGÀDVKHV
O
The indoor unit number (refrigerant cycle number - address number), the alarm code, the model code*
1)
,
the model name*
1)
and the number of connected indoor units are displayed on the LCD. The indoor unit
number and the alarm code are displayed on the 7-segment display of the outdoor unit PCB.
*1) Except for some models.
+
This alarm code is indicated when the high pressure switch (PSH) is activated during the compressor
operation (Y52C is turned ON).
O.U. PCB: Outdoor Unit PCB
*2): CMC Voltage and Number of Pressure Switch
Содержание YVAHP072B31S
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Страница 17: ...Service Manual 1 1 INSTALLATION 1 Installation ...
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Страница 577: ...Service Manual 1 561 INSTALLATION 9 Touch Back to return to the Service Menu screen 9 ...
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Страница 921: ...Service Manual 2 1 OPERATION 2 Operation ...
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Страница 1184: ...2 264 Service Manual OPERATION 7 Touch on Return to Group sel to return to Setting Group Selection 7 ...
Страница 1315: ...Service Manual 3 1 TROUBLESHOOTING 3 Troubleshooting ...
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Страница 1461: ...Service Manual 4 1 MAINTENANCE 4 Maintenance ...
Страница 1657: ...Service Manual 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting ...
Страница 1728: ......
Страница 1729: ...Service Manual 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Страница 1738: ...6 10 Service Manual FIELD WORK INSTRUCTIONS 6 8 Mollier Chart for R410A ft 3 l b ...
Страница 1739: ...SERVICE PARTS LIST Service Manual 7 1 7 Service Parts List ...
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Страница 1796: ... 2015 Johnson Controls Inc SM 15001 ...