We have a combi boiler. When the heating is on, our sizzling tap in our bathroom retains turning by itself on. Why?
Problem by Splodge: We have a combi boiler. When the heating is on, our sizzling tap in our rest room keeps turning alone on. Why?
Finest solution:
Answer by G W
Too Very hot ? Enlargement ? Faulty faucet ?
What do you believe? Solution below!

Might be a faulty rheostat.