Grasslin OE2 does not switch off

17 Oct 2019
Reaction score
United Kingdom
Just fitted my 2nd Grasslin OE2. Thought the first one was faulty but now this new one is just as bad.
Switches heat on and off no problem. Timer works no problem. But when I switch it off it will take up to 60 secs or there abouts before my Popular 90 boiler shuts down.
And then for no apparent reason it will switch on again without the Grasslin being activated. No lights on the grasslin, looks like its off. The indicators indicate it's off, but the boiler is kicking in on it's own. When it doed this it only heats the hot water, not the rads. I have to take the clock of the wall to get it to stop. Had an electrician in to look at it, he could see nothing wrong and suggested I get a priest to perform an excorcism. ( If I thought it would work!!!!).

Anyone got any ideas..
Sponsored Links
HW zone valve sticking or 3 port valve fault depending on your system

DIYnot Local

Staff member

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

Sponsored Links