Field Settings; Priority Room Setting; Cool / Heat Mode Lock - Daikin SUPER MULTI NX G Series Service Manual

Field Settings

3. Field Settings

3.1

Priority Room Setting

Electronic expansion valves are controlled to provide more capacity to the prioritized room.
 Setting method
 The control starts when all the following conditions are met.
Note: The operation mode of the priority room unit has precedence.
 Cancellation of control
3.2

COOL / HEAT Mode Lock

Use the [S15] connector to set the unit to cooling only or heating only.
Setting to heating only (H): Short-circuit pins 1 and 3 of the connector [S15].
Setting to cooling only (C): Short-circuit pins 3 and 5 of the connector [S15].
The following specifications apply to the connector housing and pins.
JST products Housing: VHR-5N
Note that forced operation is also possible in cooling / heating mode.
221
Turn off the circuit breaker before changing the setting.
Only one room can be set as the priority room (By turning on one of A to D of SW4 on service
monitor PCB of the outdoor unit).
∗ Priority room setting is made.
∗ POWERFUL signal from the priority room unit is received.
The control function is canceled when the POWERFUL operation mode is switched off or 20
minutes elapse after POWERFUL Operation started.
Living
room
C
room
Pin: SVH-21T-1, 1
A
room
B
room Living
room
Normal
operation
z
Cooling mode (C)
Heating mode (H)
5<C>3<H>1
(R1397)
SiUS12-928_A
A
room
B
room
C
When inverter
room
powerful-operation
is selected in the
priority room
(R1396)
Trial Operation and Field Settings