Configuration And Programming Retention; Extended Fan-On Time (Heat Or Cool); Compressor And Auxiliary Heat Lockout; Auxiliary Heat Control - Trane Thermostats Installation And Operation Manual

Operational and Programming Reference Information

Configuration and Programming Retention

The thermostat retains the time and date for a minimum of 5 days with no electricity. If power is
lost for more than 5 days, you will need to reset the time and date when power is restored.
All configuration parameters, system settings, and scheduling are stored in non-volatile memory,
which will retain the data indefinitely with or without power.
Note: You can manually revert to default settings by setting the appropriate installation parameter

Extended Fan-on Time (Heat or Cool)

Note: This feature applies only to the programmable thermostat.
When the thermostat fan is in Auto mode, the fan on time can be extended.
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These options may not be available for some system configurations. See

Compressor and Auxiliary Heat Lockout

Note: This feature applies only to the programmable thermostat.
Compressor and auxiliary heat is used for heat pump systems with more heat stages than cool
stages. When the temperature from an outdoor sensor is
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There is a minimum 5°F (2.5°C) deadband between compressor and auxiliary heat lockout
temperatures. Configuration option #220 sets the compressor lockout point; #221 sets the auxiliary
lockout point. See

Auxiliary Heat Control

Note: This feature applies only to the non-programmable 3-Heat/2-Cool thermostat.
You can set the auxiliary heat control using configuration option #17 to one of two settings:
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Economizer/TOD

Note: This feature applies only to the programmable thermostat.
You can set the Economizer orTOD mode using configuration option #150 to one of two settings:
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(#300 for programmable thermostats or #18 for non-programmable thermostats) to a value
of 1, and exiting configuration mode.
Configuration option #270 extends the fan on time by 90 sec after heat turns off.
Configuration option #271extends the fan on time by 40 sec after cool turns off.
above the auxiliary lockout point, only the compressor will operate on a call for heat.
below the compressor lockout point, only the auxiliary heat will operate on a call for heat.
between the compressor and auxiliary lockout point, the compressor and auxiliary heat will
operate on a call for heat.
"Configuration, " p.
Comfort - prioritizes comfort over economy. Raising the temperature just a few degrees often
will activate the auxiliary heat.
Economy - attempts to reach the temperature setting without activating the auxiliary heat.
Economizer Mode - "A" terminal is energized with the thermostat in Occupied mode,
Unoccupied mode with a call for cool, or aTimed Override mode (TOV) active.
TOD Mode - "A" terminal is energized with thermostat in Occupied mode or aTimed Override
mode (TOV) active.
26.
"Configuration, " p. 26.
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