How to repair an electric water heater at home?

Repairing an electric water heater is not complicated. However, you need to understand how it works, as it is different from a gas-powered water heater.

In an electric water heater, the water is heated by electrodes that extend into the water tank. In contrast, gas water heaters heat the water from the bottom of the tank.

Electric water heater problems

It should be mentioned that problems with little or no heat are usually caused by a faulty heating element. It is also common that the problem has to do with an improper configuration.

The heater may even malfunction due to too high pressure in the home. Also, a failure in the electric water heater can be due to lack of maintenance.

Tips to repair an electric water heater

In any case, before you begin an electric water heater repair, you should make sure to disconnect it from electrical power. You should also check all the water heater wires with a voltmeter to confirm that the power is off. Remember always call a professional plumber if you are not sure what you’re doing and to avoid more issues on the electric water heater.

When there is no hot water

  • To repair a water heater with this problem, first pay for the heater circuit at the service panel.
  • Then remove the access panel for the heating element on the water heater.
  • Then remove the insulation and the plastic safety shield. Be careful not to touch any electrical wires or terminals.
  • Press the red button, which is the high temperature reset button located above the upper thermostat.
  • Replace the safety shield, insulation, and access panel.
  • Then proceed to turn on the circuit that corresponds to the electric heater.
  • If this doesn’t fix the problem, check each heating element and replace if necessary.
electric water heater

The water is not hot enough:

  • It may be that the electric water heater is too small to meet the demand for hot water in your home.
  • Therefore, make sure that the demand does not exceed the capacity of the heater.
  • Check that 75% of the heater’s capacity is hot water.
  • For example, a 150-liter capacity water heater is sized to meet a 110-liter demand.
  • Consequently, if the demand is too high relative to the capacity of the heater, try to limit the duration of the showers.
  • You can also install a low-flow shower head or wash your dishes and clothes at different times of the day.

The water in the heater is very hot:

  • Turn off power to the heater and remove the access panel, insulation, and plastic safety shield on each heating element.
  • Do not touch any electrical wire or terminal.
  • It also tests the cables to confirm that there is no power.
  • Check that both thermostats are the same temperature. The recommended setting is between 45 and 50 ° C.
  • Then adjust the temperature to your desired setting using a flat-blade screwdriver.
  • Do this with each of the thermostats.
  • Replace the safety shield, insulation, and access panel on each item.
  • Then turn on the electric heater.

Water leak in heater:

  • This problem is usually caused by a leaking valve and plumbing connections.
  • However, they can often also be related to a problem in the tank.
  • In any case, the water leak can cause significant damage to the home, so it must be repaired immediately.
  • A water leak in the electric heater can be the result of loose heating elements or even corrosion in the tanks.
  • Therefore, inspect the heater for loose components and if necessary use a wrench to tighten them.
  • If you find corrosion in the tank, this cannot be repaired, so you will need to replace the heater.
  • Disconnect the heater from electrical power and turn off the water supply. Then drain the tank completely to stop the leak.

The water has a bad smell:

  • If you find that the water in the heater has a bad odor or even comes out a brown or yellow color, that could be a corrosion problem inside the tank.
  • It may also be that there is corrosion in the pipes of the home.
  • You will most likely have to replace the water heater tank.

Strange noises inside the heater:

  • Those strange noises you hear inside the heater may be because the water is boiling.
  • Often times, an excessive build-up of sediment at the bottom of the tank can cause that area to overheat.
  • As a result, the water will start to boil and those weird sounds will be produced.
  • The immediate solution is to drain the tank to remove accumulated sediment. If this does not fix the problem, then you will need to replace the tank.

Hogan Hot Water and Air provides repair, installation and replacement services on your household water systems and air conditioning units throughout Newcastle, Lake Mcquarie, Maitland and Central Coast. Visit us today!

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Natalie Leary