Troubleshooting by Indication on the Remote Controller SiBE37-701_B
369 Troubleshooting
3.60
“
UH
”
Malfunction of System, Refrigerant System Address
Undefined
Remote
Controller
Display
UH
Applicable
Models
All indoor unit models
REYQ8P~48P
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 PCB
Defect of outdoor unit main PCB (A1P or A3P)
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