Daikin CTXG09QVJUW Service Manual page 224

Field Settings
5.1.2 COOL/HEAT Mode Lock
Use S15 connector to set the unit to cooling only or heating only.
Setting to heating only (H): Short-circuit the pins 1 and 3 of the connector S15.
Setting to cooling only (C): Short-circuit the 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.
5.1.3 NIGHT QUIET Mode
Outline If NIGHT QUIET mode is to be used, initial settings must be made when the unit is installed.
Explain the function of NIGHT QUIET mode, as described below, to the customer, and confirm
whether or not the customer wants to use NIGHT QUIET mode.
NIGHT QUIET mode function reduces operating noise of the outdoor unit at nighttime. This function
is useful if the customer is worried about the effects of the operating noise on the neighbors.
However, if NIGHT QUIET mode is running, cooling capacity is reduced.
Procedure Turn on the SW6-1 on the service monitor PCB of the outdoor unit.
212
JST products:
Housing: VHR-5N
Pin: SVH-21T-1, 1
E
D
2
4
C
1
COOL
3
B
2
A
1
Service monitor PCB
Remove
the switch
E
cover.
D
C
B
A
Screw
2
1
4
3
2
1
COOL HEAT
SiUS121632EA
COOL mode (C)
HEAT mode (H)
1 3 5
S15
Night Quiet mode
setting switch
(SW6-1)
ON OFF
2
1
(R22008)
Trial Operation and Field Settings
(R22007)