The boiler is brand new only installed around a month ago.
System is clean with magnaclean in the return pipe work.
At aroung 55-60 degrees C a light rumbling/whistly sound start only to get worse the warmer it gets. it will finally sound like a helicopter above. the boiler does vibrate a...
Hi. I have recently noticed an odd problem.
Boiler runs perfectly when CH and/or CH/HW demands.
Problem occurs when ONLY HW demands.
Boiler seems to exceed required set temperature (by 2 Degrees) within 60 sec and turns itself off. It continues to start and stop in the manner indefinealtely...
