• Operates when the external contact switch is turned off, and returns to the original opera-
tion state when the switch is turned on.
Setting Wiring Operation example
Mode 1 or 0
P1: Arbitrary operation state
P2: Setback
Other settings are arbitrary.
Indoor unit
E
xternal
SW controller
External
contact SW 1
Mode 1, P1: On, Cool, 80 °F (26 °C)
P2 : When setback
SW1
Operation state
On
Off
Off
On
P1 P2
Cool
Cool Cool
74 °F
(23 °C)
74 °F
(23 °C)
80 °F
(26 °C)
• Thermal sensor switch is connected and cooling and heating operations are switched.
Setting Wiring Operation example
Mode 1
Off output: Enabled
P1: On, Cool or Heat
P2: On, Cool or Heat
Operation conditions: Unit
operating only
Other settings are arbitrary.
Indoor
u
nit
Thermal sensor SW
External switch controller is
connected to all indoor units
in the same refrigerant
system and cooling and
heating operations are
switched by one thermal
sensor.
P1: On, Cool, 80 °F (26 °C)
P
2: On, Heat, 70 °F (21 °C)
SW1
Operation state
On
Off
Heat
Off
On
P2 P1
Cool
Cool
74 °F
(23 °C)
80 °F
(26 °C)
70 °F
(21 °C)
• Preventing chatter noise within 1 minute after external contact switch is turned on
Setting Wiring Operation example
Mode 1
Delay-time setting: Delay
P1: Arbitrary operation state
P2: Arbitrary operation state
Other settings are arbitrary.
Indoor unit
E
xternal
SW controller
External
contact SW 1
P1: Off P2: On, Cool, 80 °F (26 °C)
SW1
Operation state
On
Off
P2
On
P1
1 min 1 min
Cool
80 °F (26 °C)
3-10. External switch controller (UTY-TEKX) - (05-175) - 3. Adaptor/Convertor units
CONTROL
SYSTEM
CONTROL
SYSTEM
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