DO`s ANYONE WHY THE BOILER KEEPS COMMING ON WHEN ITS SET TO HOT WATER ,AND AT THE SAME TIME THE RADIATORS GET HOT ..I`V CHANGED THE CIR/BOARD WITHOUT ANY DIFFERENCE ..
Do you mean selector switch at HW ONLY WITH NO WATER BEING DRAWN if so check the pin has not stuck out hitting the microswitch on the diaphragm housing
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.
Please select a service and enter a location to continue...
Are you a trade or supplier? You can create your listing free at DIYnot Local