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by ChristiaanV
Sat Jan 04, 2025 10:39 am
Forum: Opentherm Gateway Forum
Topic: Advice on fixing Vitodens 100-W
Replies: 0
Views: 3573

Advice on fixing Vitodens 100-W

I've recently had some home renovations done, and we had underfloor heating installed instead of the radiators we had before. The heating system was connected to my 4 year old Viessmann Vitodens 100-W B1HC (35kW) and is controlled by a Honeywell T4M modulating thermostat using Opentherm. Since then,...

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