What to do if the water heater trips the circuit breaker?

As soon as the water heater starts, the power is gone. However, all fuses in the fuse box are operating normally. You can find out in our guide what you should do if the circuit breaker trips while the water heater is in operation.

How does the circuit breaker work?

When a circuit breaker is mentioned, the residual current circuit breaker, also known for short as a FI switch or RCD, is meant. Circuit breakers are usually connected upstream in overcurrent protection devices, for example the line circuit breakers, commonly known as "circuit breaker " or even shorter "fuse ".

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A residual current circuit breaker does not protect the line from overloading or a short circuit, but rather serves as personal or fire protection. For personal protection, FI switches with a tripping current of 30 mA are usually used.

The circuit breaker always trips when a fault current of, for example, 30 mA occurs. In the case of slowly increasing currents, the current flow is limited; in the case of large or rapidly increasing currents, the FI switch limits the duration of the current on the body and thus protects against potentially fatal consequences.

What action should be taken if the circuit breaker trips??

The FI switch only trips when a fault current actually occurs. You should first switch off the device immediately and disconnect it from the power supply by switching off the fuse. to pull the plug. If you are a tenant, inform your landlord about the error; a specialist company should examine the causes.

You can get to the bottom of the cause yourself and narrow down possible sources of error.

  • Check whether there are any leaks in the device: To do this, remove the cover and check whether there is really no more current flowing. Turn off the main water supply. Dry the device carefully and then turn the water on again. This makes leaks visible. If water hits an uninsulated electrical line in the device, the FI switch trips.
  • Check the insulation of the cables in the device: If you are familiar with electrical equipment, you can also check whether the insulation of the wires in the device is damaged.

Eliminate errors yourself?

Basically, you should only try to fix bugs yourself if you are tech-savvy and have the necessary specialist knowledge. Otherwise, contact the device manufacturer's service hotline or a local specialist company.