Specifications
Troubleshooting by Indication on the Remote Controller SiUS39-601
186 Troubleshooting
2.50 “UA” Improper Combination of Indoor Units and Outdoor
Units/Indoor Units and Remote Controller
Remote
Controller
Display
UA
Applicable
Models
All indoor unit models
RXYQ72M, 96M
Remote controller
Method of
Malfunction
Detection
A difference occurs in data by the type of refrigerant between indoor and outdoor units.
The number of indoor units is outside of the allowable range.
Malfunction
Decision
Conditions
The malfunction decision is made as soon as either of the abnormalities aforementioned is
detected.
Supposed
Causes
Excess of connected indoor units
Defect of outdoor unit PC board (A1P)
Mismatching of the refrigerant type of indoor and outdoor unit
Setting of outdoor PC board was not conducted after replacing to spare parts PC board