Si12-308
Troubleshooting
Service Diagnosis
189
5.15
Four Way Valve Abnormality
Remote
Controller
Display
EA
Outdoor Unit LED
Display
A
5
1
4
2
1
3
1
4
1
Method of
Malfunction
Detection
The liquid pipe thermistor, the outdoor temperature thermistor and the outdoor unit heat
exchanger thermistor are checked to see if they function within their normal ranges in the
operating mode.
Malfunction
Decision
Conditions
Either of the following conditions occurs 3 minutes after the compressor has started.
Cooling / dry operation
(Outdoor unit heat exchanger temperature – Liquid pipe temperature) < –5°C
Heating operation
(Liquid pipe temperature – Outdoor unit heat exchanger temperature) < –5°C
Supposed
Causes
Connector in poor contact
Thermistor defective
Outdoor unit PCB defective
Four way valve coil or harness defective
Four way valve defective
Foreign substance mixed in refrigerant
Содержание Super Multi NX B series
Страница 7: ...Si12 308 vi Table of Contents ...
Страница 29: ...List of Functions Si12 308 18 List of Functions ...
Страница 71: ...Specifications Si12 308 60 Specifications ...
Страница 133: ...Instruction Si12 308 122 System Configuration CDK X 25 35 50 60 A Names of parts Indoor Unit 1 3 4 5 6 8 9 10 7 2 ...
Страница 175: ...Instruction Si12 308 164 System Configuration ...
Страница 227: ...Check Si12 308 216 Service Diagnosis ...
Страница 288: ...Si12 308 Wiring Diagrams Appendix 277 FTXD50BVMC FTXD60 71BVMC ...
Страница 299: ...Si12 308 iv Index ...