Specifications

Troubleshooting by Indication on the Remote Controller SiBE28-805
210 Troubleshooting
3.51
“
UH
”
Malfunction of System, Refrigerant System Address
Undefined
Remote
Controller
Display
UH
Applicable
Models
All models of indoor units
CMSQ200A7, 250A7
Method of
Malfunction
Detection
Detect an indoor unit with no address setting.
Malfunction
Decision
Conditions
The malfunction 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

Defect of indoor unit PC board

Defect of outdoor unit PC board (A1P)