SiBE121135_A Field Settings
Trial Operation and Field Settings 252
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.
Detail 1. Remove the SW5 jumper switch on the service monitor PCB of the outdoor unit.
Once the settings are complete, reset the power.
2. Install the removed jumper switch as described below. This jumper switch is needed later to
disable this setting.
5.1.4 ECONO-mode-proof Setting
Outline You can make ECONO mode ineffective on the outdoor unit.
Operation The ECONO mode can be switched over between "effective" and "ineffective" by pressing the
forced operation [ON/OFF] switch (SW1) on the outdoor unit and wiring error check switch
(SW3) on the outdoor unit at the same time and holding them for 5 seconds while the
compressor is stopped. The LEDs are lit in turn for 15 seconds to show the ECONO mode
status.
The factory setting is "effective".
Service monitor PCB
(R17815)
NIGHT QUIET mode
setting switch (SW5)
Jumper switch After removing
(R10813)
LED flashing order effective → ineffective ineffective → effective
3 or 4-room model 4 → 3 → 2 → 11 → 2 → 3 → 4
5-room model 5 → 4 → 3 → 2 → 11 → 2 → 3 → 4 → 5
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