You nailed it and agree with you conclusion. On my unit the temperature difference on auto is 3 degrees under will start the furnace. So what I do if trying to warm up with just the heat pump, is step it up 2 degrees at a time.
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2021 Montana 3231CK, Legacy, Super Solar Flex, Dual Pane Windows, Slide-out Awnings
2021 Dodge RAM 3500 4x4 Limited 6.7 HO DRW, Trailer TPMS, B&W Companion Hitch
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