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As I said earlier he kept assuring me the pump was pushing correctly. The pump was from memory replaced around 10-12 years ago and I thought at least it ond less thing to blame. Ok I have a spare pump now. I now know better to use another plumber next time I need one.

Hi, I got the installer back straight back the following morning after i heard the noise. After serverals hours of trying to figure out what the problem was he said it was the pump. So I thought great at least it will resolve the problem. The following day he spends a few hours draining the...

The flow temp current with the boiler set on 15kw are as follows When radiators are cold temp difference is around 20-30 degrees C After heating been on for 1-2 hrs temp diff is around 15-16 degree. I will check temp difference later when boiler is set to 30KW. If the boiler is too...

I rang glowworm this morning to find out the results of the water test, they are still waiting for it. On their notes they have replace heat exchanger if water test reports ok. How can you have a faulty heat exchanger on a brand new boiler. I spent half a day flushing the system out...

Thanks again, I was just double checking. I'm probably going to upgrade to that sooner or later. That resolved I have another issue withe the boiler making helicopter sounds. I've started another thread for this. Regards all

Hi, I have a grundfos 3 speed grundfos pump. It was replaced with a new one when we thought it was a flow problem but it's not as the problem still exists. It been tried on all 3 speeds. I have fully opened all rads on both ends of all the radiators to maximise flow through the boiler but no...

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...

can u confirm please. if at any time HW is requested it will take priorty to the CH. so you never have HW & CH combined Regards

Hi, my home is 5 bed detached. 17 rads + cylinder open vented on a y plan layout. The installed option board is controlling the heating of CH/HW I have currently set d.0 at 15 ( ok its running at half it's capacity) But it's running perfectly. When boiler is running on demand The temp...

quick update, The temperature set on the boiler was 65 degrees when this problem occurs. I have just set it on 75 degrees and hey presto it seems to now work on HW only. Very strange. I''ll lower it to 65 later and see if i can replicate the fault. What temperature should the boiler be...

I should of mentioned in my earlier post. The boiler is brand new only installed 2 weeks ago. System is clean with magnaclean in the return pipe work. I only noticed the problem when the CH has reached correct temperature and ther is HW demand. I noticed the temperature on the boiler rising...

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...