I have a TR60 thermostat and a Lennox HVAC ECB29 Series heat pump.
I am trying to understand what triggers second stage heat (or the "emergency heat").
I have read that it may come on when the heat set point is more than 3 degrees higher than the current temperature. So I wrote a script that slowly raises the heat point trying to avoid triggering the second stage - but it still comes on.
Does the thermostat trigger it, or does the heat pump itself?
Any help would be appreciated.
JimO.
I am trying to understand what triggers second stage heat (or the "emergency heat").
I have read that it may come on when the heat set point is more than 3 degrees higher than the current temperature. So I wrote a script that slowly raises the heat point trying to avoid triggering the second stage - but it still comes on.
Does the thermostat trigger it, or does the heat pump itself?
Any help would be appreciated.
JimO.
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