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Field Settings SiUS121827E
276 Part 7 Trial Operation and Field Settings
5.3.3 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.
Service monitor PCB
HEAT
COOL
4
3
2
1
2
1
E
D
C
B
A
2
1
ON OFF
COOL
4
3
2
1
2
1
E
D
C
B
A
Screw
Remove
the switch
cover.
Night Quiet mode
setting switch
(SW6-1)
(R22008)
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