No rads are cold when heating off and draw on hot water although Ive noticed when heating is on and there is a significant hot water draw (ie running a bath) the rads go cool.
Thanks Terry.
There has been an audible bang/thump coming from pipe work close to boiler when hot water is drawn....is that a failing heat exchanger symptom?
Easy enough to remove/clean/replace heat exchanger?
Hello, we've had an ongoing problem with the hot water. Initially it'll run hot say for 2 or 3 minutes then it loses heat becoming barely warm. Funny thing is if you restrict the flow (we have a shower head connected to the the bath) it'll stay piping hot. Bath takes an hour to fill!!
Our...