SM-16007
3-47
TROUBLESHOOTING
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 displayed when an abnormal condition continues for 30 seconds after normal
communication between the outdoor unit PCB and the inverter PCB. The abnormal condition continues
for 30 seconds even after the micro-computer is automatically reset. If communication failure occurs
from the beginning, the alarm code is displayed after 30 seconds from start up.
Alarm
Code
Abnormal Communication between Inverter PCB and Outdoor Unit PCB
Yes
Disconnect CN14
of O.U. PCB
No
Is LED2 (green) on
O.U. PCB flashing?
LED201 on the
inverter PCB is
turned ON.
LED501 on
the fan controller
is turned ON.
Yes
The connections between
inverter PCB and reactor (DCL),
smoothing condenser (CB),
contactor for compressor (CMC)
are correct.
Also, other connections for
inverter PCB are correct.
Check limiting resistance
of incoming current.
Check the part according to the alarm code as follows:
“04”: Check Wiring between O.U. PCB and Inverter PCB *1)
“04.”: Check Wiring between Inverter PCB and Fan Controller *2)
Correctly connect wires
No
Yes
Is LED2 (green) on
O.U. PCB flashing?
Failure of O.U. PCB
Yes
No
Check the part according
to the alarm code as follows:
“04”: Check Inverter PCB *1)
“04.”: Check Fan Controller *2)
No
Yes
Is the fan controller
connected correctly?
Check the fan controller
No
Correctly connect wires.
No
Yes
Yes
“04”: Check Inverter PCB *1)
“04.”: Check Fan Controller *2)
* The alarm code “04.” means abnormal communication
between the inverter module and the fan controller.
Yes
O.U. PCB: Outdoor Unit PCB
Alarm
Code
Abnormal Communication between Inverter PCB and Fan Controller
<Outdoor Unit PCB Display Indication>
Abnormal Communication
between Inverter PCB and
Outdoor Unit PCB
Abnormal Communication
between Fan Controller and
Inverter PCB
Содержание YVAHP0721CW Series
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Страница 15: ...SM 16007 1 1 INSTALLATION 1 Installation ...
Страница 163: ...SM 16007 2 1 OPERATION 2 Operation ...
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Страница 165: ...SM 16007 3 1 TROUBLESHOOTING 3 Troubleshooting ...
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Страница 285: ...SM 16007 4 1 MAINTENANCE 4 Maintenance ...
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Страница 361: ...SM 16007 5 1 EXTERNAL INPUT OUTPUT AND FUNCTION SETTING 5 External Input Output and Function Setting ...
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Страница 391: ...SM 16007 6 1 FIELD WORK INSTRUCTIONS 6 Field Work Instructions ...
Страница 400: ...6 10 SM 16007 FIELD WORK INSTRUCTIONS 0ROOLHU KDUW IRU 5 ft 3 l b ...
Страница 401: ...SERVICE PARTS LIST SM 16007 7 1 7 Service Parts List ...
Страница 416: ... 2016 Johnson Controls Inc SM 16007 Code No LIT 12012400 Issued November 2016 ...