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Old 10-23-2021, 03:02 PM   #1
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Water heater igniter fun

I have has some trouble with ignition in our 10 gal gas/electric water heater. I did the usual pulling all spade connector and coating them with dielectric grease and it helped for a while. Then I took a close look and saw discoloration on When I got to where I could change it and found this carbon fuzz on the end. I also found that the sealant at the end of the insulator was gone. I was arcing to ground. I've seen that before but never with a carbon beard on the electrodes!
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Old 10-23-2021, 07:46 PM   #2
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Dielectric grease is an Insulating Medium

Cracked ceramic insulator on spark electrode allows DC to ground


Flame generates 'ac current that gets rectrified into DC'....poor flame causes carbon build up hence the carbon fuzz
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Old 10-24-2021, 06:56 AM   #3
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Igniters are cheap, I always keep a spare on hand.
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Old 10-28-2021, 10:26 AM   #4
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Quote:
Originally Posted by Teamfoxy View Post
Igniters are cheap, I always keep a spare on hand.
I had no idea they were that failure prone! The one on our old gasser was was gas only and, I think, seven gallons. It never needed anything in the fifteen years we used it. Come to think of it the fridge never needed anything either. Ahhh times have changed. Both our fridge and the water heater have needed new electrodes. When the one in our 4 door dometic quit Dometic said I needed a new fridge because our fridge was obsolete and the electrode was no longer made. Of course Amazon had em. I'll take your advice and get one of each.
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Old 10-29-2021, 06:27 AM   #5
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I would not say that igniters fail often, but simple stuff often goes wrong in the most inconvenient place or time possible. So keeping spares for small, cheap, lightweight parts only makes sense to me. My water heater is propane only and I wind up cleaning the oriface and burner several times a year to keep it running right.
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Old 10-29-2021, 06:55 AM   #6
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Quote:
Originally Posted by Teamfoxy View Post
I would not say that igniters fail often, but simple stuff often goes wrong in the most inconvenient place or time possible. So keeping spares for small, cheap, lightweight parts only makes sense to me. My water heater is propane only and I wind up cleaning the oriface and burner several times a year to keep it running right.
I agree and will keep igniters for both fridge and water heater in future. What you were saying about simple parts.... Ours began to leak. We had to remove it to find the leak, no mean feat! We found that, either when first installed or later on simple backyard hose fittings and a binch of odd adapters had been used to connect it to the water system. After 14 years these began to leak. Fortunately our local ACE had the stainless washing machine replacements with the stainless braided hose that would fit direct.
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