Comprehending how an electric hot water heater works is very important for do-it-yourself fixing of electric hot water heating system problems. When you comprehend what a part must do and when, resolving the problem will be easy.
How Duel Component Electric Water Heaters Work
Cold water goes into the bottom of the tank through a fill tube inside the tank. Warm water is drained of the top of the tank through the warm water line.
On a duel component water heater, both components do not heat at the same time.
Beginning with a tank of cold water – the upper thermostat will stimulate the upper component. When the water in the upper half of the tank is hot the upper thermostat will shut the power off of the upper component and send it to the lower thermostat and element.
Starting with a tank of warm water – When warm water is utilized, cold water goes into the bottom of the tank at the very same time. This will cool the lower thermostat and the lower element will warm.
If sufficient warm water is used to cool the upper thermostat the lower component will turn off and the upper aspect will heat up. When the upper thermostat is satisfied it will send the power back to the lower thermostat/element.
Taking this information into consideration, let us say that you have a typical amount of warm water however when you use a lot, it takes a long period of time to heat back up. The likely issue would be the upper thermostat/element.
You expect to have warm water however its depleted quickly. The problem would more than likely be with the lower element/thermostat.
How a single component hot water heater works
Single aspect heaters can serve a couple of people well. The downside is sluggish heat up of water if you drain the tank of hot water.
The element and thermostat are located near the bottom of the tank.
Since heat increases hot water will form in the top of the tank and be drawn off as you require it.
Water heater safety
Important – Never rely on a label on a breaker box, many times they are labeled incorrect.
Dual element water heaters ought to be wired into a double breaker. Best practice is to shut off all double breakers in the box and tag/lock the box before doing any repair.
You should not eliminate access panels on a hot water heater unless the power is off.
Never touch a wire until the power is checked with a multimeter. I have actually discovered hot water heater wired on two different single pole breakers (extremely hazardous).
Electric hot water heater repair service tools you might need
- Garden hose -to drain tank
- Multimeter – to examine power, thermostats or aspects
- Element tool – to change aspects
- Screwdriver – to replace elements or thermostats
Hot water heater reset button/limit switch
The reset button/limit switch is located just above the upper thermostat.
It is built to shut off power to the hot water heater if the water temperature level rises to hazardous levels.
If the limit switch ought to trip, the reset button will pop. When the water in the tank has actually cooled the button can be pressed in to reset the limitation switch.
When a limit switch trips, there is a specific reason. It might be a malfunctioning thermostat, a grounded component or the limitation switch itself getting weak.
Water heater thermostats
Water heater thermostats control the water temperature and serve as changing relays, sending out power where it required.
120 volts takes a trip directly through the upper thermostat to both components.
The aspects will constantly have 120 volts, even with the thermostats off. When a thermostat requires heat, it will send another 120 volts to the element it manages. This will offer the component 240 volts, causing it to heat.
The upper thermostat should be complete before to the lower thermostat/ element will work.
Electric Hot water heater elements
Water heater elements are sized by wattage. Most typical is 4500 watt. Duel element hot water heater are usually wired into a 30 amp. double pole breaker. Each side of the breaker will provide 120 volts.
Water heating components types are flange, raised flanged and screw type. Flange design aspect bolt onto the tank. Screw type, obviously, screw into the tank.
Screw in components are the most common. Flange aspects are often hard to discover. There is an adapter kit to convert a hot water heater with flange elements into screw type elements.
You can acquire high or low density components. Low density element cost more however have a longer life span. They will warm the exact same quantity of water as high density elements without getting as hot. This will minimize sediment build up and enhance the life of your tank.
Common electrical warm water heater repair problems
Lost power, generally where the electrical circuitry is linked together at the top of the water heater.
These wires can get very hot and often burn into. They will also heat up and cause the breaker to trip.
Often water is hotter than normal.
If you utilize enough hot water to cause the lower aspect to heat, the water that is heated will increase to the top of the tank. The longer the element heats the greater the temperature level at the top of the tank. Temperatures can increase much greater than the thermostat setting. This is called short cycle.
The most typical electric hot water heater repair work problem is element failure.
Call us today if you are experiencing problems with your hot water heater. We will come to your residence and diagnose the problem and give you an estimate on the repair or replacement of your hot water system.
4717 Jenn Drive Unit 100
Myrtle Beach, SC 29577