So a few days ago the pilot lit went out, and now to days later it won't stay lit. Here are the tests I have done, any suggestions on which component is failing?
1. The pilot flame looks normal so I don't think there is an issue with this.
2. I can turn thermostat all the way down to "vacation" and the pilot will stay lit by it self all night.
3. There seems to be a lot of heat coming out of the lower panel that pilot light feeds through. The outside sidewall of the heater right about this panel opening is starting to mis-color from the heater (brownish). I have had the panel cover off a bit lately but there does still seem to be an unusual amount of heat coming out.
4. Once lighted and on med-hi to high I only get about 20mins before burner and pilot goes out. I am not sure if it's relevant but when all the hot water is out and the heater has to heat all 50 gallons from cold to hot I still can only get 20 mins out of it. If I turn the temp down to low it will stay lit a lot longer.
Please let me know if you have any suggestions on what the problem is.