What is an part within a hose space heater? We have an electric wet heater and I am guessing an...

We have an electric wet heater and I am guessing an constituent doesn't work because it keeps turning past its sell-by date.

We weren't getting hot water so I switched the circuit thingy within the box off and on and the river heater started working again, presently it has stopped working again going on for 12 hrs later.

Someone said more rapidly maybe its the factor. It says on the stove there are 2 of them. What is this and how do you replace it? Can you share if one or both are out?

Thanks!
Answers:    first off net sure you have power to the oven

then determine if its 110 volts or 220 volts
later go buy 2 best to replace contained by pairs
shut off circuit breaker
shut sour water supply to radiator
open up drain on kiln and drain water
when dampen has done draining turn on the marine supply to heater for a few second 10-15 then turn hose down back rotten
do this while the drain is open
what this will do is stir up the setiment within the bottom of the tank to drain out
do it a few times
presently once all the hose is done draining
remove wires from both elements
use a pipe wrench or but an element tool something like $5
and remove both elements lefty loosey righty tighty
put some plumbers tape on the strange elements and screw them in tight
recconect the wires
close the drain on the radiator
open the supply hose down to fill the space heater
once full then turn the circuit breaker backbone on
check for leaks

if it still does not grill then relocate the t-stat again there are 2
top and bottom

if it still does not warmness then the tube inside the oven where the supply wet fills is shot you can fix it but I would only replace the whole component, and if you do remove all the parts you a moment ago put on for future use
USA The elements surrounded by an electric water boiler are pieces of special made metal rod (elements) hooked up to an electric circuit. When the electricity goes through them, they bring very hot, heat the water. There are usually two, one upper and one lower. They respectively work from a thermostat, just approaching your heating system. The thermostats are mounted on the river heater reservoir. When the water temp cools down (when hot cold water is coming into the tank) the thermostats turn the elements on to warmness the water, and shut them stale when the water is hot. The elements can burn out. A licensed electrician will be capable of figure out what is wrong. It might be the circuit breaker. Please hold a licensed electrician do the troubleshooting and repairs.