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12-31-2015, 12:24 PM
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#15
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Member
Join Date: Oct 2014
Posts: 44
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After listening to this now multiple times, I'm not hearing the definetive "tick, tick, tick" that I'm used to with an igniter. What I THINK I'm hearing is the valve opening and gas coming in but not being ignited. Also, pretty sure its a SF-42FQ, due to it being a "bottom duct".
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2015 Keystone Sprinter FW324BHS
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12-31-2015, 12:29 PM
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#16
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Jun 2013
Location: 5 miles south of Lakeville, Mn
Posts: 3,047
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Our furnace refused to light last March. I talked to a tech and he told me to check the fuse where the hot wire connects to the circuit board. It seems there is a plastic flexible tube that the hot wire connects to, which then connects to the circuit board. That tube has a fuse built in. He said just bypass it until I could get a new one. I did. Furnace lit. 
I found the flex fuses at CW and now carry spares.
Check that first.
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Jim and Carol Cooper with Oreo the Kitty
FAA ATC ret, VFW, AL, VVA, NRA
US Army Aviation, MACV Vietnam 65-66
2012 Journey 36M, Cummings 360hp
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12-31-2015, 12:33 PM
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#17
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Senior Member
Winnebago Owners Club Freightliner Owners Club
Join Date: Jun 2013
Location: 5 miles south of Lakeville, Mn
Posts: 3,047
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I should mention that this type fuse is used on our water heater but I had no idea there was one on the furnace as well.
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Jim and Carol Cooper with Oreo the Kitty
FAA ATC ret, VFW, AL, VVA, NRA
US Army Aviation, MACV Vietnam 65-66
2012 Journey 36M, Cummings 360hp
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12-31-2015, 12:53 PM
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#18
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Member
Join Date: Oct 2014
Posts: 44
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I will check that fuse once I get furnace pulled out. Working on that now. I will update thread once I find the problem.
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2015 Keystone Sprinter FW324BHS
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12-31-2015, 01:40 PM
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#19
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Senior Member
Join Date: Sep 2009
Posts: 1,536
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It sounds like your system is working properly, it's just not lighting. On mine the igniter will click when it's worn out but it wont spark. I would recommend getting access to the igniter to see if it's sparking.
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12-31-2015, 04:48 PM
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#20
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Member
Join Date: Oct 2014
Posts: 44
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Today's update: Got the unit pulled out and found the model# SF-35FQ. Plan to order the ignitor online since no one is open here and the one that was didn't have what the part. I'll replace that and see what happens. As it sits currently, I wired in a switch to run the blower manually. I have a space heater in the cubby with it and can run warm air into the vents/belly if wanted/needed. Thanks for all the suggestions and help! Truly appreciated.
FWIW, this model can't be diagnosed in the camper. You can't get to any of the switches, board, etc with it in the cubby and surrounded by the metal cage.
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2015 Keystone Sprinter FW324BHS
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12-31-2015, 05:54 PM
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#21
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Senior Member
Join Date: Mar 2015
Location: Mass
Posts: 292
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Need help with furnace
So the furnace lights for a minute then goes out right after ? Shuts down after 3 attempts? Check the flame sensor if it doesn't sense the flame it cuts the propane off.. Also check ur control board for any burn marks which would cause the same issue.. Had a burnt board before and had that issue good luck
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Rich,242014 wildwood 27RLSS travel trailer
2005 Chevy Silverado 2500HD crew cab
2005 GMC Sierra 3500 single cab dump
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12-31-2015, 11:46 PM
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#22
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Senior Member
Monaco Owners Club Holiday Rambler Owners Club
Join Date: Jan 2015
Posts: 106
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The sail switch must close to trigger the igniter. The high temp cutoff switch must also be closed in order for this to happen. My high temp switch was replaced after only about three days of use. It was pretty easy to get to, as was the sail switch. However, I took it in, as it was under warranty.
Best of luck!
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2011 Holiday Rambler Ambassador 36PFT
9.3 Liter Maxxforce 10 (International HT570) -- 350 HP, 1150 lb/ft Torque
No, it's not the same engine that had all the issues in semis. 
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01-10-2016, 07:22 PM
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#23
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Member
Join Date: Oct 2014
Posts: 44
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Just in case anyone else finds this thread. Ended up being the gas valve. Was getting 12v at the valve but it wasn't opening.
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2015 Keystone Sprinter FW324BHS
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Linear Mode
