Recent content by alast

I have a "Main" system boiler and the other day I re-pressurised it and sometime afterwards I noticed it started to drip from underneath. Having removed the front panel I realised that the drips are coming from a small bleed screw on top of the Grundfos pump. Has anyone had this before...

Having real problems with my Vaillant EcoMax Pro 18E going into lock-out over the last few weeks since it really started to get some use this season. Having thought about what has changed it seems the fitting of a new towel rail might be the cause. At the end of Feb the flow and return...

It's now been installed for just over 3 years and running turned down to 16kW not 18kW without any problems. In the recent cold weather I figured it was slow heating the house so I set the boiler back to the full 18kW expecting it to come back and it didn't which is odd so I really don't know...

I have a nearly new Vaillant EcoMax PRO 18E condensing boiler. Almost as soon as the weather got cold it has started to whine at first start up in the morning - it echos round the house but is most noisy standing by the flue and sounds like someone running their finger round the rim of a wine...