Transmission Error Between Indoor Units And Outdoor Units - Daikin VRV X RXQ6-48ANR Series Service Manual

Cooling only 50/60 hz
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Troubleshooting by Error Code
5.53 Transmission Error between Indoor Units and Outdoor
Units
Applicable
All indoor unit models
All outdoor unit models
Models
U4
Error Code
Method of Error
Microcomputer checks if transmission between indoor and outdoor units is normal.
Detection
Error Decision
Transmission is not carried out normally for a certain amount of time.
Conditions
Supposed
 Short circuit in indoor-outdoor or outdoor-outdoor transmission wiring (F1/F2), or wrong
Causes
 Outdoor unit power supply is OFF
 System address does not match
 Defective indoor unit PCB
 Defective outdoor unit PCB
240
wiring
SiME341909EA
Part 6 Service Diagnosis

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