hot water heater trouble

[The Grizz]

Yes they can burn out within a couple yrs depending on how often the water heater kicks in. The one for my boiler was only $25 and I was able to replace it with ease. If anything I think I would rather replace a thermal coupler every couple yrs then something more expensive.

[wingedfish]

If I'm not mistaken. A two year old water heater is sealed combustion with a flame arresting intake screen on the bottom/side (if it is naturally aspirated(metal chimney)). On the right of the burner viewing glass there's a manual limit switch. Check that. If I'm way off base, post the model #.

[Cal_stir]

+1 on the thermocouple, most hardware and big box stores sell them, pretty easy to change, just get the right length

[bignose]

This is a sealed unit with plastic tubes.

[wingedfish]

Power vented then. Clean your flame sensor. They usually suck to get to.

[globaldesigns]

Does it try to turn on, then shut down?

Mine did this once, i took out the thermal sensor and cleaned it with emery paper, put it back and it worked fine ever since. As TimT stated, it is a rod held by a couple screws

[The Codfather]

Hey Jason,
check to see if the vent or intake has closed off do to the condensate. I assume the tank is a mid eff. and has been side walled? With the sudden drop in temperature over the last week, it may have chocked off the intake or vent. If they are clear, probably the thermocouple. LMK, if I can help.