Signal Transmission Error (Indoor Unit - Outdoor Unit) - Daikin CTXU25G2V1B Service Manual
Inverter multi system with humidifying
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Also See for CTXU25G2V1B:
- Service manual (175 pages) ,
- Operation manual (37 pages) ,
- Installation manual (18 pages)
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Troubleshooting
2.12 Signal Transmission Error (Indoor Unit - Outdoor Unit)
U4
Remote
Controller Display
Method of
The data sent from the outdoor unit is checked for problem.
Malfunction
Detection
Malfunction
When the data sent from the outdoor unit can not be received without error, or when the disable
status of signal transmission continues for 15 seconds.
Decision
Conditions
Supposed
Causes
127
Defective outdoor unit PCB
Defective indoor unit PCB
Signal transmission error between indoor and outdoor unit due to improper wiring
Signal transmission error between indoor and outdoor unit due to breakage of relay wire
(transmission wire)
SiBE12-908
Service Diagnosis
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- Specifications
- Outdoor Units
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