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aux heat on
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  1. HVAC
    I have a Trane XE1000 Heat Pump with 2 stage elect heat, which was installed new in 2001. For the past several months the unit has been cooling very well in these Texas 100deg+ days. But now when the room cooling setpoint of 72degrees is reached the AUX heater turns ON (along with the blue AUX...
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