York HIC4008B21S Engineering Manual page 50

OPTIONAL PARTS
Emergency Operation Setting
2
"COOL" and "HEAT" switches are used for emergency operation when the batteries for the wireless
controller are low.
(1) Switch "COOL": Press "COOL" so that the cooling operation is started.
(2) Switch "HEAT": Press "HEAT" so that the heating operation is started.
NOTE:
During an emergency operation, a yellow light "
The temperature setpoint and the fan speed for the cooling/heating operation are the same as before
starting an emergency operation.
The DIP switch (DSW1) is for the optional function selection. If the optional function selection is required,
3
set the DIP switch as follows.
Optional Function
Main/Sub Setting
Identifying of
Indoor Unit
Invalidity of
Emergency Operation
O: ON
X: OFF
Review the following settings when a function for the IR receiver kit is selected from the wireless controller or
the centralized controller.
● The cooling lower limit for temperature setpoint and the heating upper limit for temperature setpoint are
not available. The setting is available beyond the upper and lower limit for temperature setpoint from the
wireless controller.
● The optional function setting "Fixing of Setting Temperature" is not available. When the operation mode is
changed from the wireless controller, the indicated temperature on the wireless controller becomes the set
temperature of the wired controller.
3-12
Press "COOL" again so that the cooling operation is stopped.
Press "HEAT" again so that the heating operation is stopped.
DIP Switch Setting (DSW1)
1 2 3 4
O X X X
X O X X
X X X O
" flashes (0.5 second ON/0.5 second OFF).
5 6
Change main (OFF setting)/ sub (ON setting) wireless
X X
controller for a two-wireless controller system.
It functions as B Mode (identification of indoor unit) of
X X
the wireless controller when it is "ON".
X X The switches for emergency operation are invalid.
Details
TC-17005-rev.1