C
chassy
My Vallaint ecoMax 622/e Boiler makes a loud whining noise (like rubbing the top of a glass) for 20-30 seconds when starting up and each time it demands for central heating or hot water. I told Vallaint Engineer on last Service visit but he did nothing about problem. It continues and I’m told it’s a common problem. It is driving us and our neighbours mad and wakes us all up early each morning. I turned to lowest Summer setting to resolve but Boiler does not heat water at all. Is this a heat exchanger problem - we had to have ours replaced already a few weeks after installation 4 years ago?