Service manual

Troubleshooting by Indication on the Centralized Remote Controller SiUS28-902_a
147 Troubleshooting
4.4 “MA” Improper Combination of Optional Controllers for
Centralized Control
Remote
Controller
Display
MA
Applicable
Models
Centralized remote controller
Method of
Malfunction
Detection
Malfunction
Decision
Conditions
Supposed
Causes
 Improper combination of optional controllers for centralized control
 More than one master controller is connected
 Defect of P.C.B. of optional controller for centralized control