![background image](http://html1.mh-extra.com/html/daikin/super-multi-nx-b-series/super-multi-nx-b-series_service-manual_2459105210.webp)
Si12-308
Troubleshooting
Service Diagnosis
199
5.21
Radiation Fin Temperature Rise
Remote
Controller
Display
L4
Outdoor Unit LED
Display
A
5
1
1
2
1
3
1
4
4
Method of
Malfunction
Detection
A radiation fin temperature rise is detected by checking the radiation fin temperature being
detected by the fin thermistor with the compressor on.
Malfunction
Decision
Conditions
If the radiation fin temperature with the compressor on is above 90°C for 5.2~7.5 kW-or-smaller
class systems or above 85°C for 8.0 · 9.0 kW class systems,
If a radiation fin temperature rise takes place 4 times successively, the system will be shut
down.
The error counter will reset itself if this or any other error does not occur during the following
60-minute compressor running time (total time).
Supposed
Causes
Fin temperature rise due to defective outdoor unit fan
Fin temperature rise due to short-circuit
Fin thermistor defective
Connector in poor contact
Outdoor unit PCB defective
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 ...