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LewTippett · 05-03-2021, 03:09 PM

01 DS. Penguin II 15k with CCC II thermostat. Everything working properly until roofing repair guy had to remove it to replace water damaged decking. All done except now the furnace does not work. Heat Pump/Air/Fan all function great. When I use the thermostat to call for furnace. I get nothing. No clicks, no error codes.

Checked furnace fuse. Reconnected all wiring including the furnace control wire from the front unit. Reset the coach and reset the thermostat. Nothing that came from his work appears to be causing the issue. The two blue furnace wire controls coming from the unit controller has 13.4v on one side and nothing on the other. Any other ideas?

Skip426 · 05-03-2021, 04:31 PM

My 99 DSDP has two fuses ( inline ) behind the return air grill , and if one or both are blown , the furnace circuit , doesn't report back to the front roof A/C unit and show up on the t'stat display .
Grill is Velcroed to the cabinet face . Pictures taken with grill removed.

NOTE: Actual location of the two fuses varies by the installer working on the day your coach was built , other owners have found them , behind the outside furnace access panel .

LewTippett · 05-03-2021, 05:12 PM

Found the two in line fuses behind the return panel and one was blown. Replaced it and furnace popped right on! You da man!

Skip426 · 05-03-2021, 05:33 PM

Well I got one thing right today. ( according to my DW this is the only thing

)

Stay safe . Skip

BTW; In 10 1/2 years of owning my coach , I've found fuses in 10 different locations; 4 chassis and 6 coach ( and I'm not sure I've found them all )
KEEP NOTES . I do.