Don't hate me for asking a stupid question, but are you sure it is the furnace? The furnace is located under the refrigerator, but the converter is right next to it under the pantry. The converter will have a fan that comes on when plugged into shore power when there is a power draw (such as charging the battery, running lights, fridge, etc)
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Rob & Amy
2019 Passport 240BH SL (current)
2024 Cougar 29BHL (was on order, Keystone delayed, cancelled order, exploring options)
2022 Ford F250 7.3L Godzilla Crew Cab FX4
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