Control Specification; Mode Hierarchy - Daikin SUPER MULTI NX CTXS07JVJU Service Manual

SiUS12-928_B

3. Control Specification

3.1

Mode Hierarchy

Outline
Air conditioner control has normal operation mode, forced operation mode, and power transistor
test mode for installation and servicing.
Detail
 Unless specified otherwise, a dry operation command is regarded as cooling operation.
Note:
 Indoor fan operation cannot be made in multiple indoor units. (A forced fan command is made
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 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 operation lamp
blinks.)
Function and Control
Air conditioner control mode
Forced operation mode
Forced cooling operation (for pump down operation)
Forced heating operation
Wiring error check operation
Power transistor test mode
Normal operation mode
Fan
Cooling (includes drying)
Heating
Stop (indoor unit: OFF)
during forced operation.)
Heating
Defrosting
Preheating operation
Discharging from capacitor
Stop

Control Specification

(R17361)
54