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Old 07-26-2011, 01:14 PM   #29
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Aage so how'd you make out? Any results from cleaning, blowing or adjusting?
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Old 07-26-2011, 02:18 PM   #30
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Aage so how'd you make out? Any results from cleaning, blowing or adjusting?
I've been meaning to update this, but work on my daughter's basement bath reno has kept me busy since the weekend, but here's what happened.

So... I went down armed with a new regulator, one of those switchover indicators for the regulator, a new set of thermocouple and pilot assembly, and my compressor.

I tried to light the WH before doing anything to it, and was quickly rewarded with the same symptoms: stayed on for two or three minutes, pilot went out.

Determined to clean & blow out any spider detritus with my compressor, I went to get it and then it hit me that I had left its hose at home.

So no blowing out the various parts on the WH, and no topping up the tire pressure on Henri either.

Then, I remembered this question:

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Will it stay running if you leave the access door open?
I tried that, but cutting piece from a cheap wire coathanger and setting a little "latch" of sorts on the WH's door, and the dang thing stayed lit all weekend! What does that mean? I'm thinking that there is something blocking airflow, and leaving the door open abot an inch or so lets that problem sort itself out.

I welcome any thoughts from you, Excella CM; you must have had an idea in mind...?

Chris, I think you suggested to replace the rubber hoses when I did the regulator, but I hadn't bought a pair. Since the thermocouple and liot assembly seem to work perfectly with the door hung opend a bit, I'm tempted to take the news ones back and exchange them for the hoses.

I do mean to actually take the compressor's hose with me this time and make sure Iblow anything and everything out of the WH's various orifices.

Any other comments welcome, as usual...
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Old 07-26-2011, 05:04 PM   #31
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If you have not done it already take a look back at my post #6. Those little holes could be blocked with a hose clamp or something...Easy to get to and check anyway. But it is definitely sounding like airflow. (and a lack of it)
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Old 07-26-2011, 05:27 PM   #32
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Not to beat a dead horse, but did you ever check the LP pressure to the water heater?
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Old 07-26-2011, 07:37 PM   #33
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If you have not done it already take a look back at my post #6. Those little holes could be blocked with a hose clamp or something...Easy to get to and check anyway. But it is definitely sounding like airflow. (and a lack of it)
Not yet, I will be cleaning it out with my compressor next weekend, and since it is working fine with the door open just a bit, I can wait a bit.

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Not to beat a dead horse, but did you ever check the LP pressure to the water heater?
As I mentioned on Friday, I ordered a manometer from Vintage Trailer, but of course, it isn't in yet. I did install a new regulator and plan to calibrate the system when I get the instrument.
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Old 07-29-2011, 08:11 AM   #34
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Well, off to the camp again, this time, WITH the compressor hose, AND my brand new manometer. Great service from Vintage Trailer, very fast delivery!

Now all I need is some clear weather so I can work outside a bit. Have a great long weekend, all!
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Old 07-29-2011, 08:51 AM   #35
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Someone mentioned a hose clamp and I saw that in a pic somewhere and I thought to myself "that clamp does not need to be there,besides its covering the air slots. That could very well be the source of the air intake problem.
AAGE Some of those new regulators are preset to 11 1/2 inches Water Columum,so maybe you should check before changing any settings on the new regulator. I learned that from the guy I purchased my Pilot lite assembly from he gave me several nice tips.
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Old 08-11-2011, 05:55 PM   #36
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I have been reading all these posts and I am having sort of similar problems. I replaced my thermocouple and think I fixed the pilot light going out when water reaches temp. My problem now is I can't get the main flame to burn right, its got a lot of orange and is fairly loud. I keep messing with the airflow thing and I can get it to burn right for short period of time. But it keeps goin back to the bad flame. When I blown a really light without blowing it out, it seems to work well. Long story short. How can I get more airflow or is it possible I have another problem? Any help would be great, thanks!
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Old 08-11-2011, 11:51 PM   #37
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Well, I forgot to update what happened here. I'm still waiting to be sure, but it looks like I licked the problem without putting in another pilot/thermocouple (I replaced the thermocouple a couple of months ago, and was suspecting that maybe it was bad).

What I did was to replace the regulator (easy job), and removed the thermocouple/pilot assembly, then blew out the large tube where the combustion happens. When I did the blowing out, there was a small amount of ash that come out. I blew it both ways, from the burn end and from the exhaust end, same result; a bit of fine ash.

I also blew out the smaller sliding slotted tube, but it looked clear to begin with, and in any event, nothing came out that I could see.

Result: I put it all back together, adjusted the sliding tube for a flame with a slightly yellow tip, and it worked fine. It went for the three days that I was there, and again another three days the following week when my wife was there with friends. She's down there again for close to a week, and if it still works, I am declaring it fixed.

Now, I will remind you all that this is a relatively new water heater: I bought it new in November of 2009. If you are working on an older one, I would recommend replacing the pilot and thermocouple assembly. They are "consumables" IMHO.

Good luck!
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