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03-19-2025, 09:42 AM
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#1
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Junior Member
Join Date: Sep 2024
Posts: 2
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2004 National Dolphin 5355 Thermostat
Does anyone have a good link for wiring schematics for thermostat heating and air or the electric diagrams for this RV. Fighting a power loss with my thermostat. Any help would be great thanks guys. Every link I try is no good.
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03-19-2025, 10:34 PM
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#2
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Senior Member
National RV Owners Club
Join Date: Sep 2008
Posts: 322
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There is 12 vdc fuse on the furnace control board, accesed from outside. That was my issue when thermostat went dark.
__________________
Ray, Cheryl, O'Connell and of course Miss Molly Silky Terrier mix
2006 Dolphin 5355
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03-20-2025, 01:23 PM
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#3
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Junior Member
Join Date: Sep 2024
Posts: 2
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Quote:
Originally Posted by Tahiti16
There is 12 vdc fuse on the furnace control board, accesed from outside. That was my issue when thermostat went dark.
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Do you mean the push button fuse outside near the on off switch or somewhere else. I don't know what vdc means.
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03-20-2025, 04:37 PM
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#4
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Senior Member
National RV Owners Club
Join Date: Sep 2008
Posts: 322
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Volts DC 12 volts and it is an auto style, older glass tube like with metal ends.
__________________
Ray, Cheryl, O'Connell and of course Miss Molly Silky Terrier mix
2006 Dolphin 5355
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03-20-2025, 07:49 PM
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#5
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Senior Member
Join Date: Mar 2019
Location: Arizona
Posts: 2,341
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It sounds like what Tahiti16 is saying is that you have to go outside and open up the cover for the furnace. It's on the passenger side of the coach under the fridge access door. He's saying that the fuse is on the furnace control board behind that panel. My Dolphin and all the documentation are at the storage yard ten miles from here, so I am unable to confirm any of this, but that's what his instructions meant to me.
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2004 National Dolphin LX 6320, W-22, 8.1, Allison 1000, Front/rear "Trac" Bars & Anti-sway Bars, Sumo Springs, Roadmaster Reflex Steering Stabilizer, 2005 PT Cruiser Toad
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03-20-2025, 08:35 PM
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#6
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Senior Member
National RV Owners Club
Join Date: Sep 2008
Posts: 322
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You are correct, fuse is on the control board.
__________________
Ray, Cheryl, O'Connell and of course Miss Molly Silky Terrier mix
2006 Dolphin 5355
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04-25-2025, 11:47 AM
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#7
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Senior Member
Workhorse Chassis Owner
Join Date: Apr 2005
Location: Spanish Springs, NV, USA
Posts: 303
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Thermostat
We found that the power to the thermostat comes from the furnace. Our problem was an intermittent connection at one of those blue Scotch clips in the wiring at the furnace. I wiggled while them while husband was working the thermostat. Boom! He soldered the connections. All good!
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2006 Dolphin LX 6320 W22 34 FT.
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04-25-2025, 12:52 PM
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#8
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Senior Member
Monaco Owners Club Workhorse Chassis Owner
Join Date: Aug 2002
Location: Clovis, CA, USA
Posts: 13,791
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Thanks for the update, glad to hear you got the problem solved.
__________________
2004 Monaco La Palma 36DBD, W22, 8.1, 7.1 MPG
2000 LEXUS RX300 FWD 22MPG 4020 LBS
Put a tent over this circus.
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