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Title: RV propane water heater acting odd
Post by: Rob on May 13, 2021, 10:17:12 AM
On day 6 of a 9 day dry camp with my travel trailer (new to me but first year i have had it.  It is a 2005).

The propane source for the water heater has decided to stop staying lite.

Situation:
-Power it on
-gas flows followed by the pezzio (sp?) Igniter
-fire roars to life
-gas flow stops after 2 seconds

This repeats for each attempt.

I put a lighter near the flame souce and after it goes out, there is zero propane flowing.


Any ideas?  Seems like some kind of controler may have failed.  (Electrical side of the water heater works fine)

Title: Re: RV propane water heater acting odd
Post by: Ridgeratt on May 13, 2021, 11:01:04 AM
First guess check the thermocouple.
Title: Re: RV propane water heater acting odd
Post by: Rob on May 13, 2021, 11:07:34 AM
Not my area of expertise (had to look up what a thermocoupler is!).  But would that fail for gas, but not electric?
Title: Re: RV propane water heater acting odd
Post by: Ridgeratt on May 13, 2021, 11:13:51 AM
Thermocouple is what opens the gas valve.  The electric has a separate element
Title: Re: RV propane water heater acting odd
Post by: getreal711 on May 13, 2021, 11:29:01 AM
Yes thermocouple keeps thw gas flowing saying the pilot is lit.
Title: Re: RV propane water heater acting odd
Post by: Ghost Hunter on May 13, 2021, 11:42:07 AM
Looks to be fairly inexpensive part.  I could help you out with tools and install if I ever make it over.   :tup:  Maybe just needs a little cleaning on the fire end?
Title: Re: RV propane water heater acting odd
Post by: Stein on May 13, 2021, 11:47:38 AM
It's either the thermocouple (or thermopile or both depending on the model) or the valve itself.  Usually, people swap out the thermocouple as it's easy and cheap and most often the culprit.  If you have a meter and knowledge you can test it, but once you pull the old one out to test it's usually easier to put a new one in anyway.
Title: Re: RV propane water heater acting odd
Post by: ghosthunter on May 13, 2021, 12:02:05 PM
Try cleaning it while you wait for help or part.  :dunno:
Title: Re: RV propane water heater acting odd
Post by: Rob on May 13, 2021, 02:00:12 PM
Excellent!  I will try to disassemble and clean it.

Appreciate the advice!
Title: Re: RV propane water heater acting odd
Post by: getreal711 on May 13, 2021, 04:09:16 PM
If you need the new part go visit doug in startup. Dougs rv has alot of odd parts in stock and is very helpful with any questions.
Title: Re: RV propane water heater acting odd
Post by: Rob on May 13, 2021, 10:00:11 PM
I will write that down for sure.

Hoping to look it over tomorrow.   Was in the field all day not seeing bears.
Title: Re: RV propane water heater acting odd
Post by: Ridgeratt on May 14, 2021, 03:15:04 AM
You should be able to get one at any hardware store. Some are longer than you would need.  But just make a coil for the excess.
Title: Re: RV propane water heater acting odd
Post by: carlyoungs on May 14, 2021, 05:15:32 AM
My fridge doesn't work when ever I switch it to propane. Would it be the same fix?
Title: Re: RV propane water heater acting odd
Post by: JKEEN33 on May 14, 2021, 05:32:22 AM
My fridge doesn't work when ever I switch it to propane. Would it be the same fix?

Is the fridge staying lit? If it’s just not getting cold, the cooling system needs to be replaced. It’s a sealed system, I found a place online that rebuilds them. It’s easy to do. Hardest piece is getting the fridge out of the cabinet. Mine was getting cold on electric, but not on propane.
Title: Re: RV propane water heater acting odd
Post by: Ridgeratt on May 14, 2021, 07:18:57 AM
My fridge doesn't work when ever I switch it to propane. Would it be the same fix?

Is the fridge staying lit? If it’s just not getting cold, the cooling system needs to be replaced. It’s a sealed system, I found a place online that rebuilds them. It’s easy to do. Hardest piece is getting the fridge out of the cabinet. Mine was getting cold on electric, but not on propane.



Propane produces a tremendous amount of condensation. Perhaps the burner tube on the condenser is plugged up with rust. RV fridges work on a ammonia boil to get cold.
The last one I replaced I ordered from RVCool.com. But with the craziness we have had last year not sure if he's still in business.   
Title: Re: RV propane water heater acting odd
Post by: Sandberm on May 14, 2021, 07:44:12 AM
My fridge doesn't work when ever I switch it to propane. Would it be the same fix?

Probably just spiders nest in the little oriface the propane comes out.

I'm no expert on this stuff, nor know the names of any of the parts, but I was able last fall, in the dark while camping, pop the out side cover off that shows where all the gas comes in to work the fridge. I was able to take some simple stuff apart and get the blockage cleared and when i put it back together i was able to see things light up.

Same thing happened with the furnace the fall before. Something had built a nest in the little hole where the propane comes out. That was a bit of a pain as i had to pull the furnace out of the wall to get to it.

Now, instead of going a year between fireups, i go out every 6 weeks or so and get the furnace and fridge fired up on propane to kill spiders and such
Title: Re: RV propane water heater acting odd
Post by: carlyoungs on May 14, 2021, 08:57:19 AM
My fridge doesn't work when ever I switch it to propane. Would it be the same fix?

Probably just spiders nest in the little oriface the propane comes out.

I'm no expert on this stuff, nor know the names of any of the parts, but I was able last fall, in the dark while camping, pop the out side cover off that shows where all the gas comes in to work the fridge. I was able to take some simple stuff apart and get the blockage cleared and when i put it back together i was able to see things light up.

Same thing happened with the furnace the fall before. Something had built a nest in the little hole where the propane comes out. That was a bit of a pain as i had to pull the furnace out of the wall to get to it.

Now, instead of going a year between fireups, i go out every 6 weeks or so and get the furnace and fridge fired up on propane to kill spiders and such

Thanks! I will try that. Sounds pretty easy.
Title: Re: RV propane water heater acting odd
Post by: Rob on May 14, 2021, 11:39:13 PM
Did not get a chance to disassemble the unit today to clean is bcs 45 min before i was to head to camp for chores and a siesta I filled my spring bear tag!

Perhaps tomorrow!

I did, just for kicks, try to fire it up and amazingly it fired and stayed lite!  So that was wierd.
Title: Re: RV propane water heater acting odd
Post by: Ghost Hunter on May 15, 2021, 05:45:08 AM
Did not get a chance to disassemble the unit today to clean is bcs 45 min before i was to head to camp for chores and a siesta I filled my spring bear tag!

Perhaps tomorrow!

I did, just for kicks, try to fire it up and amazingly it fired and stayed lite!  So that was wierd.

Maybe because you needed a hot shower?    :dunno:   Better karma?    :chuckle:
Title: Re: RV propane water heater acting odd
Post by: Rob on May 15, 2021, 06:54:31 AM
Without a doubt!
Title: Re: RV propane water heater acting odd
Post by: hal on May 24, 2021, 07:41:48 PM
sometimes the thermo gets cruddy
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