Question about Water Heaters
Flame should be clear blue, not yellow.
Get more fresh air to water heater.
Check vent draft.
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Posted on Nov 14, 2014
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Posted on Jan 02, 2017
the pilot is getting too much air and is an indicaiot of dirty or air/ fuel ratio imbalance. The pilot is wimpy and the thermocoupler has alot to do with the gas . Make sure your thermocoupler is on the tip of the flame. You may end up replacing it. because it is showing signs of eminnt failure. When it fals your curners won't fire up. Good luck.
Posted on Jun 09, 2009
flue is overheating make sure outlet is not obstructed outside and if not that you feel a good air flow coming from it
Posted on Nov 15, 2009
Bypass valve incorrectly set
obstruction or dirty tank
plugged line - lime or other! does cold flow into tank ok?
Tank is split water going somewhere you can't see - this should be obvious.
There is not really anything to obstruct the flow normally so there
would have to be an obstruction somewhere. Lime, junk, garbage etc build up .
On my coach I have lots of pressure on the cold side so hot would have to have the same unless there is an obstruction into or out of the tank. If in the bypass position you have sufficient flow than the lines are ok and the problem or obstruction is in the tank itself. Drain the tank, leave the bottom plug out, open up the pressure relief valve. Turn on the water and see if you get a lot of water draining from the drain hole on the tank. There should be a lot of water coming out of the drain hole. If so that tells you that your getting sufficient flow into the hot water tank. If so your problem is the water getting out of the tank. Like a clogged return line or an obstruction from the water tank to the faucet. A dirty scale lined tank can do a number on tank water flow. Also check to see if the water is going somewhere else, your tank could be split and you just can't see where the water is going!
Posted on Feb 07, 2010
SOURCE: I have a Bosch Aqua
It sounds to me like you tried about everything I would. So I think you're already thinking about what I would do next. Try the flame sensor,and as last resort check all connection . Remove wires one by one clean and reattach. If all else fails change cotrol board. It's very hard to fix when it's not consistent. Good luck. Thanks
Posted on Nov 15, 2010
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