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Old 06-16-2006, 07:00 PM   #1
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I have a 6 gallon propane only water heater which has to be manually lit. After I light it, it will stay on and run fine for a couple of minutes, but then I hear a click as if a switch is cutting off and the heater goes out. I can instantly re-light it, but it does the same thing. Any suggestions would be appreciated.
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Old 06-16-2006, 07:00 PM   #2
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I have a 6 gallon propane only water heater which has to be manually lit. After I light it, it will stay on and run fine for a couple of minutes, but then I hear a click as if a switch is cutting off and the heater goes out. I can instantly re-light it, but it does the same thing. Any suggestions would be appreciated.
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Old 06-17-2006, 03:12 AM   #3
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Hello RedriverD,

Welcome to iRV2, we're really glad to have you here as a new member and are looking forward to reading your posts about your RVing experiences and adventures. You'll find a great bunch of folks on this site who are very knowledgeable of RVing, the rigs we use, and the places we go in them.

As you'll see, they're eager to help and share their knowledge and experiences and I'm sure one will jump in here soon regarding your water heater problem.

Again, welcome to iRV2, we're glad you joined.
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Old 06-17-2006, 03:27 AM   #4
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There could be a build up on the thermocoupler, not allowing it to sense the flame and then cutting the gas off. You may want to also clean the entire system.
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Old 06-17-2006, 04:12 AM   #5
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It could also be a safety shut-off switch. I had that on a new one when the fan wheel wasn't perfectly aligned.

Whenever the unit senses something wrong - it automatically shuts down.
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Old 06-17-2006, 09:41 AM   #6
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ReddriverD Welcome to irv2
As dawd has said check your thermocoupler clean and adjust. The age of thermo maybe to old but any good rv-parts should have a replacement.
Make sure your gas is off while working on it.
Enjoy the forums and post often.
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Old 06-17-2006, 11:31 AM   #7
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It sounds like a thermocouple to me, had that happen more than once on different units. Replace it and that should cure your problem. While your are at it make sure there is no cob webbs inside the burner outlet. Thats a good thing to check every year at start up.

David
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Old 06-17-2006, 04:18 PM   #8
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thanks for the help.. I will definitely try the thermocouple... I was thinking it may have been something more complex, was thinking the heater would not light at all if the thermocouple was bad... that's what I get for thinking too much.. thanks again
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Old 06-20-2006, 10:56 PM   #9
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Does the actual burner light and then go out, or does the pilot go out. You need to light the pilot and hold the knob over against the spring for about 30 sec, then let it come back to the ON position, if the thermocouple is working, then the gas should come on and the burner should light. If the tube were blocked, it would not light (had spider nest problems once) Usually if the main burner lights, the thermocouple is working fine, and the problem could be with the thermostat thinking the tank is hot. Also make sure that you have water in the tank - an not air. Not that this is related to your problem - it is just one of those things to do.
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Old 06-21-2006, 08:01 AM   #10
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yes, the burner does light and then goes out after a couple of minutes... but the thing is, when I hear the click and the burner goes out, the pilot also goes out, not just the burner... if it was the thermostat, wouldn't the pilot stay on?
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Old 06-21-2006, 01:10 PM   #11
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I would say if it is the thermostat, the pilot should stay lit.
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Old 06-21-2006, 06:00 PM   #12
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Sounds like a thermocouple problem. It hould be well in the flame of the pilot. First thing to do is to follow the cap-tube on the thermocouple back to where it attached to the gas valve. Using a small cresent wrench or open-end wrench, snug the hex nut up a bit. If it is loose, it will drive you batty.

You may need to replace the thermocouple.

Ken
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Old 06-22-2006, 04:52 AM   #13
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while we are on water heaters....
mine started signing last night rattling very bad nosies from the hot water lines
i drained the water out and unscrewed the HOT out line at the tank. there seems to be a sort of heat sink migration type thingy, in the hole, and it was full of crud, , so out came the anode rod and i flushed the tank thoroughly but only got a small bit of crud.
has anyone ever removed the little thermal, heat migration block thing to clean it or do i need to replace it????
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