Search results

In case anyone searches this problem and is interested in the solution, it was indeed the diverted valve. Replaced and it's all working fine now. Thanks to Agile for his correct diagnosis.

Yes, while radiators are cold and heating on, boiler temp drops to around 65 degrees then fires up for a few seconds until it gets to 70 then stops. Rads still cold. I guess if the diverter valve was stuck in hot water position, the water temp in the boiler would stay hot for ages as it's...

Bit of an update as I think I've got a better idea of the symptoms - Hot water always works fine When the heating is playing up it shows a high temperature (around 70 degrees) on the display and displays a status of s0, which according to the manual means no heat demand, or as I...

Thanks, just read the faq and it certainly sounds like a sticking valve. Would using the hot tap cause it to unstick? If one time using the hot tap doesn't work, can you operate it manually?

Hi, That was my thought after doing some research, but would it explain why a blast on the hot tap turns the heating back on?

Hi all, I have a Vaillant 828E which appears to be working ok under normal circumstances. However if you run the shower it sometimes turns the heating off. I understand a combi is supposed to do this, but mine doesn't turn the heating back on again! I've left it a couple of hours before and...