One day I stopped getting hot water and my water tank was clicking every 30 s?

Question

I have a 60 gal no pilot gas heated water tank. It is ~7 years old as is the house. I have been in the house for ~ 4 months and used to have crazy hot water (scalding) coming out of all the faucets. I lowered the thermo setting 2 months ago and it has been better ... as I think about it, however, the temperature has been gradually decreasing ever since.

Today I noticed that I had no hot water and went downstairs, where I noticed that the HWT clicks every 30 seconds or so and the fan on top of the HWT cycles on and off. I looked through the manual and troubleshooting guide, but nothing worthwhile was mentioned. I ended up "reseting" the thermostat, but I don't hink that will do anything. Anyone see this before? What was the issue and how can I fi it? Thanks

Answer 1

check if the pipes connected to the water heater are galvanized, if they are they are cloged or your water heater need to be replaced.

Answer 2

Hot water heaters are dangerous things.  Has anyone seen the Mythbusters episode where they blew a hot water heater through a mini-(built to code)-house?  Don't mess with it.  Could be a limit switch broken.  Call a professional.

Answer 3

check pilot light

Answer 4

Reseting it is the only way unless you want ice cold water

SRRY