SiBE121135_A Control SpecificationFunction and Control 1124. Control Specification4.1 Mode HierarchyOutline Air conditioner control has normal operation mode, forced operation mode, and power transistortest mode for installation and servicing.Detail Cooling Only ModelHeat Pump ModelNote: Unless specified otherwise, a dry operation command is regarded as cooling operation anda radiant operation command is regarded as heating operation. Indoor fan operation cannot be made in multiple indoor units. (A forced fan command ismade during forced cooling operation.)Determine Operation ModeThe system judges the operation mode command which is set by each room in accordance withthe procedure, and determines the operation mode of the system.The following procedure is taken when the modes conflict with each other.∗1. The system follows the mode which is set first. (First-push, first-set)∗2. For the rooms where the different mode is set, standby mode is activated. (The operationlamp blinks.)Air conditioner control modeForced operation modeForced cooling operation (for pump down operation)Wiring error check operationPower transistor test modeNormal operation modeFanCooling (includes drying)Stop (indoor unit: OFF)Preheating operationDischarging from capacitorStop(R17811)Air conditioner control modeForced operation modeForced cooling operation (for pump down operation)Forced heating operationWiring error check operationPower transistor test modeNormal operation modeFanCooling (includes drying)HeatingHeatingDefrostingStop (indoor unit: OFF)Preheating operationDischarging from capacitorStop(R17361)
