Control Specification; Mode Hierarchy - Daikin 2MXS40H2V1B Service Manual

Control Specification

4. Control Specification

4.1

Mode Hierarchy

Outline Air conditioner control has normal operation mode, forced operation mode, and power transistor
test mode for installation and servicing.
Detail
Note:
Determine Operation Mode
The system judges the operation mode command which is set by each room in accordance with
the procedure, and determines the operation mode of the system.
The following procedure is taken when the operation modes conflict with each other.
∗1. The system follows the operation mode which is set first. (First-push, first-set)
∗2. For the rooms where the different operation mode is set, standby mode is activated. (The
operation lamp blinks.)
91
Air conditioner control mode
Forced operation mode
Power transistor test mode
Normal operation mode
Unless specified otherwise, a dry operation command is regarded as cooling operation and
a radiant operation command is regarded as heating operation.
Indoor fan operation cannot be made in multiple indoor units. (A forced fan command is
made during forced cooling operation.)
Command from Command from
the first room the second room
Cooling Heating
Cooling Fan
Heating Cooling
Heating Fan
Fan Cooling
Fan Heating
Forced cooling operation (for pump down operation)
Fan
Cooling (includes drying)
Heating
Heating
Defrosting
Stop (indoor unit: OFF)
Preheating operation
Discharging from capacitor
Stop
Operation of the
first room
Cooling
Cooling
Heating
Heating
Fan
Standby
SiBE121123_A
(R17533)
Operation of the
second room
Standby
Fan
Standby
Standby
Cooling
Heating
Function and Control