Daikin VRV S RXQ4/5ARV1 - Improper Combination of Indoor Unit and Outdoor Unit, Indoor Unit and Remote Controller

SiAF332111E Troubleshooting by Error Code
Part 6 Service Diagnosis 317
5.64 Improper Combination of Indoor Unit and Outdoor Unit,
Indoor Unit and Remote Controller
Applicable
Models
All indoor unit models
All outdoor unit models
Error Code UA
Method of Error
Detection
A difference occurs in data by the type of refrigerant between indoor and outdoor units.
The number of indoor units connected is out of the allowable range.
Error Decision
Conditions
 The error decision is made as soon as either of the abnormalities aforementioned is
detected.
 Mismatching of indoor and outdoor units PCB connection.
Supposed
Causes
 Excess of connected indoor units
 Defective outdoor unit main PCB
 Mismatch of the refrigerant type of indoor and outdoor unit.
 Setting of outdoor unit main PCB was not carried out after replacing to spare PCB.