troubleshoot Electric Water
Water heater relief valves leak for 4 reasons.
Please read this first:
Relief valve warning
1 The valve is old and it starts to leak, They can just start to
leak in less then a year so if it is a few years old, that may be all there is
to is so it just needs to be replaced. Pictures and instructions will
|Warning: This is a potentially dangerous job and it is often better and safer to find an professional plumber to complete the job for you.
2 The water is too hot. water heater relief valves will blow at
210 % f but most of the time the relief valve will blow before that temperature
because of the extra pressure caused by the water expanding. This in not to be
confused with normal thermo expansion. This is the water heater over heating and
is very dangerous. if you have noticed the hot water spitting out of the spout
or the water being very hot almost like steam you have a bad control and should
shut your water heater off and have the problem fixed. In this example the
relief valve is doing it's job, but may need to be replaced after the control
problem is fixed.