Uh System Error, Refrigerant System Address Undefined - Daikin R71FUV1 Service Manual

Si20-701_B
UH
3.109
System Address Undefined
Remote Controller Display
UH
Applicable Models
FMCQ, FMDQ-A7/B7
Method of Error Detection
Detect an indoor unit with no address setting.
Error Decision Conditions
The error decision is made as soon as the abnormality
aforementioned is detected.
Supposed Causes
Improper connection of transmission wiring between
indoor-outdoor units and outdoor-outdoor units
Defective indoor unit PCB
Defective outdoor unit PCB (A1P)
456
System Error, Refrigerant
Troubleshooting by Remote Controller