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Thanks, that’s reassuring. The pump seems to have gone quiet again, still getting air from radiator, but hopefully it’s getting better

Thanks everyone, I’ll try this troubleshooting over the next few days

They’re designer ones (2 cast iron, 1 steel column). We’ve had all rads changed over the last 12 months and never taken this long for air to drain (though maybe I didn’t notice as the AAV wasn’t leaking before).

Thank you, I’ll give all of this a try after work.

Thanks so much, I was thinking I might need to re-drain. I’ve adjusted the pump to 12 o clock and it runs at 20w/0.4m. I think it was on that before, but it was getting noisy (which goes away if a drain as all air). The cold feed tees in about 150mm before the pump.

Hi everyone Just over a week ago, we had some new radiators installed, plumber drained system, installed radiators, added Fernox F1, and refilled the system. A few days prior to the work, I added Fernox F3, which was flushed out when the system was drained. Since the new radiators we’ve been...

Sorry that should be Hertfordshire, near Watford

Ah that makes sense, thanks very much

Thank you. Thinking about it, when we got the f.22 error, and about half an hour before it started working again, I went into the loft and moved the ball valve slightly in the header tank which released a bit of water. Wonder if that cleared a blocked cold feed…

Thanks so much. I’ll check all of that. Would this be connected to the original f.23 error with no heating downstairs and low pump operation? Just want to try and avoid it happening again. Cheers Rob

Hello I’ve added some pictures of the boiler, the new pump, and the tank/pipes. Thanks again Rob

Yes sure, when I get home I’ll post some pictures. Thanks again for the help

Thanks for your reply. Apologies, not sure if it’s pressure or the speed the pump is working at, but it currently is measuring 0.7 on the pump’s screen. It’s an Ecotech 418 about 9 years old. It’s not sealed, there’s a tank in the loft that tops up the central heating. Thanks

Hello I’m hoping someone can shed some light on an issue we’ve been having with our Valiant standard boiler with gravity fed system, for the last week plus. Started around Monday last week, when we stopped getting hot water downstairs asks boiler sometime displayed F.23. Gas engineer came...

Thank you, appreciate the response and it puts our mind at rest

Hello My wife and I currently have a builder insulating a suspended timber floor. The builder has put a membrane down called Protect A1, which I read online is non-breathable. Will this be a problem? There’s still ventilation on the side where the membrane hangs down. Is there anything I can...