Daikin Super multi NX E Series Service Manual page 262

Field Settings
5.1.2 COOL / HEAT Mode Lock
Outline 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.
Note that forced operation is also possible in cooling / heating mode.
Detail
251
JST products:
Housing: VHR-5N
Pin: SVH-21T-1, 1
∗ The illustration is for 4-room model as
representative.
A
SiBE121135_A
COOL mode (C)
HEAT mode (H)
1 3 5
Arrow view A
40/50/52/58 class
Main PCB
A
68/75/80/90 class
Main PCB
A
(R17814)
Trial Operation and Field Settings