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05-25-2015, 10:37 AM
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#1
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Montana Master
Join Date: Apr 2004
Location: Ontario
Posts: 722
M.O.C. #1328
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Learned a new one
Have seen people report this with the water heater but not the furnace. the other night we had an unusual for us cold snap here in upstate New York. It went below freezing at 2:30 am and down to 29 by 6am and not above freezing until 7am. Anyway about 4am I thought it was unusual that the electric heater was running so much in the bedroom and that I hadn't heard the furnace run(it worked the night before) nothing I did would make it start so I turned on the fireplace and went back to bed. The next day I did some trouble shooting and resets of the CCC to no avail. The relay clicked in the AC but the furnace was quiet as a mouse. Looked at the schematic and decided to trouble shoot outside at the furnace. Took off the cover and there is an on off switch mounted on a bracket. I touched the switch there was a crackle and the furnace came to life and ran perfectly. Turns out it is a combination on/off switch and circuit breaker. None of the local dealers had the part so I substituted a regular switch since the furnace has a fuse in the panel. Anyway I thought I would let people know that there is a switch inside the furnace(in addition to the sail switch) that can fail.
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Mike & Donna Ishler Ontario, NY KE2LU FN13
2017 3720RL TST S637's
2017 Dodge 3500 Laramie CTD 4x4 Auto
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05-25-2015, 12:33 PM
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#2
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Montana Master
Join Date: Feb 2012
Location: Lake Gaston
Posts: 8,773
M.O.C. #12156
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Wow, never knew that! Thanks for the post.
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Mike and Lorraine
2002 3655 FL, 2005 3650RK
2010 3665RE, 2015 3910FB
F350 crew cab dually 6.7
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05-25-2015, 03:51 PM
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#3
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Site Team
Join Date: Jun 2011
Location: Wilsey
Posts: 18,799
M.O.C. #11455
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New one on me, thanks for the info.
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Dick, Joyce, Diego, Picatso and Gustav
2017 3720 RL, and 2013 HC 343RL
Pullrite Hitch, IS, Disk Brakes, 3rd AC, Winegard Traveler, Bathroom door mod, Dometic 320, couch for desk swap, replaced chairs, sun screens, added awnings, etc.
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05-25-2015, 04:19 PM
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#4
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Montana Master
Join Date: Mar 2015
Location: West Richland
Posts: 1,253
M.O.C. #17164
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That is good information to have. I have had to replace the mother board before with the heater having similar issues to yours. It would work for a few cycles and then not work. Always worked at the dealer but not up in the mountains. I will try to remember your information about the circuit breaker. Thanks.
Tom Marty
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05-26-2015, 01:24 AM
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#5
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Montana Master
Join Date: May 2011
Location: Hixson
Posts: 3,436
M.O.C. #11397
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Good for you to share, but I did know about it. Found it when I had trouble with furnace on 2008 3400RL.
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2018.5 Montana 3791RD
Full Timers 9/1/2010 through 1/16/2020.
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05-26-2015, 01:34 AM
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#6
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Montana Master
Join Date: Apr 2004
Location: Ontario
Posts: 722
M.O.C. #1328
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Just to make it easy to find it's a black switch on a black bracket mounted to a black housing. Thank goodness for colored wires!
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Mike & Donna Ishler Ontario, NY KE2LU FN13
2017 3720RL TST S637's
2017 Dodge 3500 Laramie CTD 4x4 Auto
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05-26-2015, 04:43 AM
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#7
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Montana Master
Join Date: Jun 2010
Location: Colorado Springs
Posts: 3,335
M.O.C. #10496
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Pictures anyone?
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2010 3150RL
LevelUp, Dual 6 volt batteries, Progressive Industries EMS HW50C, Honda EU2000i Generator, Bridgestone Duravis R250 tires, Torklift Glowstep Revolution Stairs, LED Tail lights
2015 RAM 3500 Laramie SRW LB CC Cummins 6.7L Aisin Trans B&W RVK3600
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05-26-2015, 07:02 AM
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#8
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Montana Master
Join Date: Apr 2004
Location: Ontario
Posts: 722
M.O.C. #1328
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If I get a chance this afternoon I remove the cover and take one.
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Mike & Donna Ishler Ontario, NY KE2LU FN13
2017 3720RL TST S637's
2017 Dodge 3500 Laramie CTD 4x4 Auto
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05-27-2015, 02:28 AM
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#9
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Seasoned Camper
Join Date: Feb 2015
Location: Warwick
Posts: 72
M.O.C. #16077
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I am going to look for it. It would be a good thing to know. Thanks for the post.
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