Installation manual

Night Quiet Mode setting
COOL/ HEAT mode lock <S15>
● If Night Quiet Mode is to be used, initial settings must be made
when the unit is installed.
Explain Night Quiet Mode, as described below, to the customer, and
confirm whether or not the customer wants to use Night Quiet Mode.
About Night Quiet Mode
The 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 will be saved.
Setting procedure
Remove the SW5 jumper switch.
Once the settings are complete, reset the power.
Install the removed jumper switch as described below. This
switch will be needed to later disable this setting.
NOTE
● Use the S15 connector to set the unit to only cool or heat.
Setting to only heat (H): short-circuit pins 1 and 3 of the connector <S15>
Setting to only cool (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
Pin: SVH-21T-1,1
Note that forced operation is also possible in COOL/HEAT mode.
Night Quiet Mode
setting switch (SW5)
Service PC-board
Jumper switch After removing
S15
S10
S23
S22
S21
S20
COOL mode (C)
HEAT mode (H)
Arrow view
1 3 5