Signal Transmission Error (Between Indoor And Outdoor Units) - Daikin D-Series Service Manual
Super multi nx d/e series
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- Service manual (205 pages)
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Si12-619A
5.8
Signal Transmission Error (between Indoor and Outdoor
Units)
U4
Remote
Controller
Display
Method of
The data received from the outdoor unit in indoor unit-outdoor unit signal transmission is
checked whether it is normal.
Malfunction
Detection
Malfunction
When the data sent from the outdoor unit cannot be received normally, or when the content of
the data is abnormal.
Decision
Conditions
Supposed
Causes
Service Diagnosis
Faulty outdoor unit PCB.
Faulty indoor unit PCB.
Indoor unit-outdoor unit signal transmission error due to wiring error.
Indoor unit-outdoor unit signal transmission error due to disturbed power supply waveform.
Indoor unit-outdoor unit signal transmission error due to breaking of wire in the connection
wires between the indoor and outdoor units (wire No. 2).
Short circuit inside the fan motor winding.
Troubleshooting
219
- Quick Links:
- Indoor Units - Cooling Only
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Troubleshooting
