What to do if the GFCI trips?

Why does the RCD trip and what can I do?

If the RCD trips, it is usually due to the stove (tubular heater).

Possible reasons and solutions include:

• Magnesium oxide filling:

It can happen that the magnesium oxide filling of the heaters absorbs some moisture from the ambient air through the vapor-diffuse silicone seal, which in a few cases can lead to the RCD tripping.

This is a physical process and not a manufacturer's defect.

• What to do?

In this case, the specialist must bypass the RCD by disabling the protective function of the RCD under supervision and control.

The temperature should be set to a minimum of 95°C.

After the moisture has escaped from the heating rods after approx. 30-40 minutes, the RCD can be switched on again!

To avoid this problem more often, for example if the sauna is located outdoors and the stove comes into contact with external moisture, you can switch on the sauna every 4 to 6 weeks for approx. 10 to 20 minutes and heat it through.

• Defective heating rod:

If there is no magnesium oxide filling, and the electrician has checked the resistances of the individual heating rods and found that one or more heating rods are defective or burned out, then the heating rod or rods must be replaced. Spare parts can be obtained from us or the respective dealer where the sauna heater was purchased.

• If the problem persists despite the solutions mentioned above, contact the technical departments of the respective manufacturers. The technicians will be happy to assist your electrician in identifying further possible sources of error and

Source: https://www.eos-sauna.com/ratgeber/faq/sauna-technik