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24
in Home screen. Press INFO for inquiry for the outside temperature.
2: Outdoor control sensor (See Menu item 21 Heat pump temperature lockout)
3: Indoor sensor. If 3 is selected and the thermostat is installed with an indoor remote sensor, display will show the
read temperature from the indoor sensor.
21. Heat pump compressor lockout temperature
This option apply only to HP1 HP2 setting in system type option and only works when remote sensor option (menu
item 20) is set 2.
0: No heat pump compressor lockout
15,20,25,30,35,40℉: heat pump compressor lockout temperature
With fossil-fuel backup (See menu item 3. Auxiliary heat type option). If the thermostat is installed with an optional
outdoor sensor, you can select the compressor lockout temperature. When the outdoor temperature is below the
compressor lockout temperature, only the auxiliary heat operates. When the outdoor temperature is above the
compressor lockout temperature, only the compressor operates.
With electric heat back up (See menu item 3. Auxiliary heat type option). If the thermostat is installed with an
optional outdoor sensor, you can select the compressor lockout temperature and /or an auxiliary heat lockout
temperature. (See menu item 22) When the outdoor temperature is below the compressor lockout temperature, only
the auxiliary heat operates. When the outdoor temperature is above the auxiliary lockout temperature, only the
compressor operates. If the outdoor temperature is between the compressor and auxiliary lockout temperatures, both
the compressor and auxiliary heat can operate.
22. Heat pump auxiliary heating temperature lockout option
This option apply only to HP1 HP2 setting in system type option and only works when remote sensor option (menu
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