U4" Malfunction Of Transmission Between Indoor Units And Outdoor Units - Daikin VRV III-S RXYMQ36 48PVJU Service Manual

SiUS34-907
U4
3.39 " " Malfunction of Transmission between Indoor Units
and Outdoor Units
U4
Remote
Controller
Display
Applicable
All indoor unit models
Models RXYMQ36 · 48PVJU
Method of Micro-computer checks if transmission between indoor and outdoor units is normal.
Malfunction
Detection
Malfunction
When transmission is not carried out normally for a certain amount of time
Decision
Conditions
 Indoor to outdoor, outdoor to outdoor transmission wiring F1, F2 disconnection, short circuit or
Supposed
Causes
 Outdoor unit power supply is OFF
 System address does not match
 Defect of outdoor unit PCB
 Defect of indoor unit PCB
Troubleshooting
wrong wiring
Troubleshooting by Indication on the Remote Controller
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