Ideal Isar HE30 Radiator Issue

25 Oct 2011
Reaction score
United Kingdom
My Ideal Isar HE30 boiler is heating my radiators when hot water is requested. I have changed the diverter valve but the problem continues.

Any ideas?
Sponsored Links
Did you change the head and the body or just one of them. If so it will be the other one that wasn't changed(probably the cartridge in the body)
Thanks for your reply. I changed the cartridge.

Do you think I need to change the head as well?
Sponsored Links
Take the head off and make sure it motors open and closed properly and the White plastic bit inside actually moves as I've seen a few cracked so they don't push in spindle on cartridge.

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