Ecotec plus boiler with VR66 gives code s97

Coen · 21 Dec 2020

I have mounted a VR66 wiring centre in dual zone (switch in position 0) with two VRT350 thermostats. The heater is an Vaillant Ecotec Plus with combiboiler from october 2020. And I must say it works very well when one or both thermostats ask for heat. When there is no demand for heat the boiler goes into a continuous test of the waterpressure sensor ( about 3 times per minute) and diagnose code s97 is displayed. At the moment there is a new demand for heat, the test stops and everything works fine.
When there is no VR66 connected and a VRT350 is connected directly to the boiler, it doesn't go into this testmode.
Does anyone has a clue?

diynot

If you need to find a tradesperson to get your job done, please try our local search below, or if you are doing it yourself you can find suppliers local to you.

Select the supplier or trade you require, enter your location to begin your search.

Are you a trade or supplier? You can create your listing free at DIYnot Local

Ecotec plus boiler with VR66 gives code s97

Coen

DIYnot Local

Similar threads