Si12-308
Troubleshooting
Service Diagnosis
171
5. Troubleshooting
5.1
Indoor Units
- : Not used for troubleshooting
∗
: Varies depending on the cases.
Indication on
the remote
controller
Description of The Fault
Details of fault
(Refer to the
indicated
page.)
00
Indoor unit in normal condition (Conduct a diagnosis of the outdoor
unit.)
—
A1
Indoor unit PCB abnormality
173
A5
Freeze-up protection control or high pressure control (heat pump
model only)
174
A6
Fan motor (DC motor) or related abnormality
176
C4
Heat exchanger thermistor or related abnormality
178
C7
Shutter drive motor / shutter limit switch abnormality
179
C9
Room temperature thermistor abnormality
178
U4
Signal transmission error (between indoor and outdoor units)
180
UA
Unspecified voltage (between indoor and outdoor units)
181
Summary of Contents for Super Multi NX B series
Page 7: ...Si12 308 vi Table of Contents ...
Page 29: ...List of Functions Si12 308 18 List of Functions ...
Page 71: ...Specifications Si12 308 60 Specifications ...
Page 175: ...Instruction Si12 308 164 System Configuration ...
Page 227: ...Check Si12 308 216 Service Diagnosis ...
Page 288: ...Si12 308 Wiring Diagrams Appendix 277 FTXD50BVMC FTXD60 71BVMC ...
Page 299: ...Si12 308 iv Index ...