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Robert BeckerAug 11, 2025
What to do if the power lamp is not on and the water is not hot in my STIEBEL ELTRON EVS15 Boiler?
- ZzstevensAug 11, 2025
If the power lamp isn't on and the water isn't hot, the issue might be due to several reasons. First, check the breaker to ensure the unit is receiving power. Second, inspect the power line connections at the contact points and fix any looseness. Lastly, the thermal cut-out (TCO) might be triggered; in this case, reset the thermal cut-out and check the thermostat.