There should be no reason for turning the battery disconnect off and on to restore power, AC or DC. The battery disconnect switch, regardless of the label on the switch, is on, meaning the battery is connected to the main panel in the trailer, when you can not remove the red key from the switch. I’m betting when they did whatever they did during the inspection they left something disconnected or turned off which is affecting the furnace.
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Bob & Becky
2012 3402RL
2012 Chevy 2500HD D/A CC 4WD
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