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Old 11-22-2015, 07:39 AM   #1
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Water heater not getting enough air?

I have a suburban water heater with a manually lit pilot light. I've been having trouble with the burner and pilot going out, so I replaced the thermocouple and pilot assembly since it was a cheap fix. Unfortunately, no change. However, last night I decided the leave the water heater door cracked and success. It's still working fine this morning. This leads me to think the burner is starved for air, but why now? Any suggestion on a remedy besides leaving the door cracked?
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Old 11-22-2015, 08:39 AM   #2
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Just a thoughtÖ..and I could be wrong

No offense but….." A man will tell you his intensions if you listen "

You said that you installed the replacement parts. Gives me cause to think that it might need adjustment, The tube going to the pilot/burner has an adjustment to add or limit the air mixture.

Just loosen a screw and slide……here is a youtube video

https://youtu.be/nSjDklZh4ws
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Old 11-22-2015, 09:32 AM   #3
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Gets my vote ...
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Old 11-22-2015, 09:48 AM   #4
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Also run a curved brush or something flexible up the burner tube in the heater. There could be something (webs, mud daubers) which has restricted the flame and gasses from getting OUT of the heater.
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Old 11-22-2015, 11:22 AM   #5
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The gas water heater in our 2005 performs great up to about 7500 foot elevation , above that I have to leave the cover open for it to burn properly . All adjustments have been made properly , simply needs the wide open air intake that the cover cuts back on .
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Old 11-22-2015, 11:50 AM   #6
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I looked for an air shutter adjustment last night, but sure enough this suburban doesn't have one.

I think everything is clear, but I'll run a brush inside the tube and vent to make sure.
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Old 11-22-2015, 01:18 PM   #7
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Did you watch the video?

Maybe there is another way to adjust your make/model
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Old 11-25-2015, 09:56 PM   #8
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Everything was clear, so I adjusted the pilot so it burns more like a butane torch instead of a lazier flame, and so far no more issues. Could just be a coincidence, but so far so good.
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