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07-27-2021, 01:42 PM
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#1
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Senior Member
Join Date: Jul 2017
Location: Romeo
Posts: 142
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suburban sw6de water heater
So I have me a suburban sw6de water heater
electric heating is fine.
but for fast recovery I use both
today flip the switch to turn on LP portion...
I can hear and fell gas solenoids open.
but NO spark/tick to ignite.
Whilst it lets out LP I can use a long lighter to ignite,....but then goes out in 5 or so seconds?
Any ideas?
__________________
2018 Cougar 359MBI
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07-27-2021, 04:14 PM
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#2
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Site Team
Join Date: Mar 2011
Location: Gaylord
Posts: 26,995
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Are you sure there's adequate propane flow going to the water heater? A "almost empty propane tank can delay triggering the automatic changeover valve and sometimes they "hang up and won't switch"... If you're sure you have adequate propane flow, then clean the burner tube, there may be a spider web or trash impeding the flow of hot gas exhaust. If that doesn't work, clean the ignitor circuit and make sure there's no soot on the ignitor. If that doesn't work, I'd try a new control board.
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John
2015 F250 6.7l 4x4
2014 Cougar X Lite 27RKS
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07-27-2021, 04:24 PM
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#3
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,337
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And before you buy a new control board, remove the igniter/flame sensor. Clean it with WD-40, and put it back in. An old partner swears by it.
On edit: I think there is a 2amp fuse in the bottom left corner, that’s for the sparker. Check it.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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07-29-2021, 08:37 AM
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#4
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Senior Member
Join Date: Jul 2017
Location: Romeo
Posts: 142
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I tried cleaning the igniter/sensor
no go.
lower left out outside of unit is a switch for 120VAC bellow the gas valve (no fuse)
electric heats the water...but I can only feel /hear the gas solenoid open.
no spark
but I CAN use a long lighter to light it....but it quickly goes out....(probably not sensing it)
so a new board on order....
__________________
2018 Cougar 359MBI
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07-29-2021, 08:40 AM
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#5
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,337
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If it has a fuse it’s on the control board.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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08-04-2021, 11:23 AM
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#6
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Senior Member
Join Date: Jul 2017
Location: Romeo
Posts: 142
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follow up
no fuse on control board
order new board and flame sensor
put in new board all works..saving sensor for back up
__________________
2018 Cougar 359MBI
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08-04-2021, 05:06 PM
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#7
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Site Team
Join Date: Jul 2014
Location: Modesto
Posts: 20,337
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Quote:
Originally Posted by Mic
follow up
no fuse on control board
order new board and flame sensor
put in new board all works..saving sensor for back up
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Good deal!!! I couldn’t remember which brand used the 2A fuse.
__________________
2012 Copper Canyon 273FWRET being towed by a 1994 Ford F350 CC,LB,Dually diesel.
Airlift 5000 bags, Prodigy brake control, 5 gauges on the pillar.Used to tow a '97 Jayco 323RKS.
Now an RVIA registered tech. Retired from Law enforcement in 2008 after 25+ yrs.
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