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SingleBaxicombiboilertrackworld help.

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I suspect I already know the answer - "get a man in who knows what he's doing".

But, I have the low pressure warning light coming on even though the pressure gauge is high (much higher than it should be). Faulty sensor or faulty gauge or something else?


 
Posted : 03/04/2024 12:58 pm
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Pressure sensor person here.

The gauge is less likely to be faulty than an electronic sensor.


 
Posted : 03/04/2024 1:03 pm
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although our old boiler (which we've had replaced) did have a faulty gauge (always showed low pressure) and the plumber said this was not uncommon with an ageing boiler... 🤔


 
Posted : 03/04/2024 1:07 pm
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We had a baxi back boiler - be glad flames aren’t shooting out the side of it and you’re wondering “what’s that sooty smell?”

To be fair, it was probably close to 25 years old.


 
Posted : 03/04/2024 1:19 pm
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Conversely on my old Worcester boiler the pressure gauge went a bit wappy, came back from holiday to find out that it had leaked. Replacement guage fixed it and was cheap from plumb centre.

The pressure light never came on.


 
Posted : 03/04/2024 1:21 pm
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Pressure sensor person here.

The gauge is less likely to be faulty than an electronic sensor.

That's what I would have thought. I did the diverter valve last year so I might try replacing the sensor. I am very tempted to change the boiler though, it is getting on a bit. Has anyone any experience of heatable.co.uk?


 
Posted : 03/04/2024 1:29 pm
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So... I knocked down the pressure to what I would consider normal by bleeding the rads. Fired up the boiler, low pressure light flashed a couple of times and went out. Turned on heating and it fired up straightaway. Hmm.


 
Posted : 03/04/2024 4:23 pm
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Are you sure its a 'low pressure warning' and not a 'pressure out of range warning'....


 
Posted : 03/04/2024 4:43 pm
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We had a baxi back boiler

we still have, serviced yearly it's been running for a lot longer than 25 years (it was old when we arrived here 15 years back).


 
Posted : 03/04/2024 4:49 pm
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Are you sure its a ‘low pressure warning’ and not a ‘pressure out of range warning’….

Well it's described as low pressure.


 
Posted : 03/04/2024 4:52 pm
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we still have, serviced yearly it’s been running for a lot longer than 25 years

Look after it, and it will probably keep going - from what I recall it’s a pretty simple thing.

Sadly the one we inherited with our house hadn’t been, hence the flames.


 
Posted : 03/04/2024 6:07 pm