Recent content by retrogeezer

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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Got a bit more air out of that tank valve this evening, guess this will just be a case of patience until the air gets circulated and can be bled off. Thanks again for the replies and help.
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Just the tiniest hiss, I asked above if I needed to leave the valve open a bit longer to draw air up from further down in the pipe.
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Yes, the pump is still running when the boiler overheat stat has tripped.
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Yes, I did that but it was just the tiniest hiss, nothing like the amount of air that sounds like it's bubbling around in the pipes. That's why I asked above if I needed to let water flow out for a bit, in case air is trapped further down. :)
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    But I haven't bled anything yet? How would I have got rid of the air? And it's working fine when on water and heating? Boiler wiring hasn't been touched, just the new pump fitted. Thanks for replying. :)
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Just tried again with water only and still the same issue, boiler cuts out after 10-15 mins. The pipes into the bottom of the tank and the middle of the tank are absolutely red hot, I guess they are the to/from the boiler pipes as I know the cold feed from the F&E tank is around the back. So...
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Would be really helpful to know if I need to let more water out of those tank valves to bleed them properly?
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    With the heating on as well it's now been running with no issues for 40 minutes.
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    I hear a tiny hiss and then water starts to come out so I shut them off, maybe worth letting it flow for a bit? Anyway, bypass valve is shut and the hot water has been on for 15 minutes and the boiler just cut out. I opened the airing cupboard to check the pipes a minute or 2 before that and...
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Will do. Pump on speed 2 like the old one but the old one was really knackered.
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Thanks Picasso, a bit of improvement. I wound the bypass valve shut last night and then backed it off about 1 turn. This morning we have much hotter water, probably as hot as it should be but the boiler had still tripped when I checked it. Obviously it had been running for longer before tripping...
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Which bleed valves? Rads or those 2 tank ones? I've bled the rad ones a couple of times, 2 had a fair bit of air in still the 2nd time. Only a tiny bit of air from those tank ones though. Did you see my question above about the bypass valve? Thanks for your help so far.
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    Potterton Profile Netaheat overheat stat tripping only on hot water setting?

    Hope that worked? Also, should that bypass valve be open or closed? It's a vented system with TRV's on all but one radiator. *edit* After a bit more googling I think the bypass valve should be almost fully closed? It was probably half open so would that possibly cause the problem? i.e, sending...
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