I also put a switch on my unit, but it was to keep the furnace fom coming on when I carried bikes on the hitch (right in front of the furnace outlet). But it also comes in very handy when I want to bring up the heat in the morning (when outdoor temps are moderate) without the gas coming on because I go beyond the 5 deg limit.
When nites get colder, I turn on the switch before going to bed. If I forget, I get a nudge when the temp gets below Sharon's tolerance.
The switch won' affect the heatpump operation, it will turn off when the thermister reaches its lower limit.
It is best to switch to gas only when temps get low, because after the 3rd lockout, the tstat goes into a failsafe mode, and the gas will not heat above about 65 deg.
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Dan & Sharon & Kasey (Our Yorkie Puppy (12 Yrs Old) On the Road (2012 Journey 36M, 2006 Jeep Liberty)
USN-Ret ('65-'93) Fulltimers, Class of 2012
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