3-62
SM-16007
TROUBLESHOOTING
O
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O
The indoor unit number and the alarm code are displayed on the LCD. The alarm code is displayed on
the 7-segment display of the outdoor unit PCB.
+
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the thermistor is detected during a heating or cooling operation.
Refer to "Alarm Code 11"
for thermistor resistance.
Failure of I.U. PCB
Yes
Failure of
Thermistor
No
Is resistance of THM4
(for Outside Air Temperature)
between 0.24k
Ω
and 840k
Ω
?
Alarm
Code
Abnormality of Thermistor for Outside Air Temperature
(for Ducted (Medium Static) with EconoFresh Kit)
Cause
Check Item
Action
(Turn OFF Main Switch)
Event
Failure of
Outlet Air
Thermistor
Check resistance.
Replace thermistor
if faulty.
Failure
Check wiring to
I.U. PCB.
Correctly connect wires.
Incorrect Connection
Replace I.U. PCB
and check operation.
Replace I.U. PCB
if faulty.
Failure of I.U. PCB
Failure of
Thermistor for
Outside Air
Temperature
Summary of Contents for YVAHP0721CW Series
Page 2: ......
Page 10: ...viii SM 16007 ...
Page 14: ......
Page 15: ...SM 16007 1 1 INSTALLATION 1 Installation ...
Page 163: ...SM 16007 2 1 OPERATION 2 Operation ...
Page 164: ...2 2 SM 16007 OPERATION Ɣ 5HIHU WR WKH 6HUYLFH 0DQXDO IRU QGRRU 8QLW RU RQWUROOHU ...
Page 165: ...SM 16007 3 1 TROUBLESHOOTING 3 Troubleshooting ...
Page 284: ......
Page 285: ...SM 16007 4 1 MAINTENANCE 4 Maintenance ...
Page 360: ......
Page 390: ......
Page 391: ...SM 16007 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Page 400: ...6 10 SM 16007 FIELD WORK INSTRUCTIONS 0ROOLHU KDUW IRU 5 ft 3 l b ...
Page 401: ...SERVICE PARTS LIST SM 16007 7 1 7 Service Parts List ...
Page 416: ... 2016 Johnson Controls Inc SM 16007 Code No LIT 12012400 Issued November 2016 ...