Suburban 12 gal DSI works perfect on 120v. When I switch to LPG it goes through the normal lighting sequence and starts up; operates for a few minutes and once the water is luke warm it shuts down, goes through the lighting sequence again without lighting up and the small red light on the interior switch illuminates. I've checked through the manual and the trouble shooter's guide on the forum, checked voltage across Hi-Limit/ECO and Thermostat and it's working as it should. I'm thinking the circuit/control board, anyone with similar experiences or ideas?
(Solved) Only Luke Warm Water on LPG
- Thread starter rancol01
- Start date
carl.swoyer
Well-known member
Re: Only Luke Warm Water on LPG
Have you pressed the reset on the heater
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
Have you pressed the reset on the heater
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
carl.swoyer
Well-known member
Re: Only Luke Warm Water on LPG
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
JohnDar
Prolifically Gabby Member
Re: Only Luke Warm Water on LPG
See those connectors in Carl's photo? Try pulling them off and cleaning the blades. Spray some contact cleaner into the female ends, too. Doesn't take a lot of oxidation to muck it up. Changing the circuit board is pretty easy, but will run you about $80, so I would try the simple stuff first. A Hi-Limit switch will run about $35. BTDT, and it will still run fine on propane for hours and then decide not to until I cycle the water heater switch (propane one) off, wait at least minutes, then turn it back on. If you don't wait for any unignited gas to clear, you and the rest of the CG will know it by the boom.
See those connectors in Carl's photo? Try pulling them off and cleaning the blades. Spray some contact cleaner into the female ends, too. Doesn't take a lot of oxidation to muck it up. Changing the circuit board is pretty easy, but will run you about $80, so I would try the simple stuff first. A Hi-Limit switch will run about $35. BTDT, and it will still run fine on propane for hours and then decide not to until I cycle the water heater switch (propane one) off, wait at least minutes, then turn it back on. If you don't wait for any unignited gas to clear, you and the rest of the CG will know it by the boom.
carl.swoyer
Well-known member
Re: Only Luke Warm Water on LPG
Those contacts are hot ! Be careful
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
Those contacts are hot ! Be careful
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
carl.swoyer
Well-known member
Re: Only Luke Warm Water on LPG
Depending on your year model dometic had a recall on the thermostat . sub standard material.
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
Depending on your year model dometic had a recall on the thermostat . sub standard material.
Carl & Christine, 2012 Landmark Rushmore, 2005 Silverado crew cab lt 8 foot bed 6.6 lly /Allison -custom dual exhaust-198000 miles !
Last edited:
danemayer
Well-known member
Re: Only Luke Warm Water on LPG
Thanks for all the suggestions, I've gone through everything suggested a couple of days ago except checking the burner tube/orifice. I had it off a couple of months ago to replace the 120v heating element and it looked fine then, but haven't used it on LPG since so maybe some little critter has moved in; I'll check that in the next couple days and let you know.
Thanks for all the suggestions, I've gone through everything suggested a couple of days ago except checking the burner tube/orifice. I had it off a couple of months ago to replace the 120v heating element and it looked fine then, but haven't used it on LPG since so maybe some little critter has moved in; I'll check that in the next couple days and let you know.
Re: Only Luke Warm Water on LPG
Burner tube/orifice seem to be ok, the valve doesn't allow the gas to flow even with 12v to the solenoids. I've ordered a new valve through Amazon, will report back as soon as it arrives and I get the chance to change it out.
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Burner tube/orifice seem to be ok, the valve doesn't allow the gas to flow even with 12v to the solenoids. I've ordered a new valve through Amazon, will report back as soon as it arrives and I get the chance to change it out.
Sent from my iPad using Tapatalk
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