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Because they don't know what they're talking about.Why is everybody obsessing about a pressure gauge ?
Because they don't know what they're talking about.Why is everybody obsessing about a pressure gauge ?
If there was a fault with the actual boiler it would display a fault code.
What's the gauge for?
Why is everybody obsessing about a pressure gauge ? It’s a conventional condensing boiler so chances are it’s tank fed. The fact the display is showing zero means it’s in standby mode ie waiting for a reason to fire up. If there was a fault with the actual boiler it would display a fault code.
When Peter says he has 40 years experience as a heating engineer it’s not really being anal is it. It’s just knowing your job.
Why is everybody obsessing about a pressure gauge ? It’s a conventional condensing boiler so chances are it’s tank fed.
Why is everybody obsessing about a pressure gauge ? It’s a conventional condensing boiler so chances are it’s tank fed. The fact the display is showing zero means it’s in standby mode ie waiting for a reason to fire up. If there was a fault with the actual boiler it would display a fault code.
Do you have a header tank in the loft? Pressure guage could be up there.
you are confusing header tank with pressure vessel.
A pressure vessel is the thing usually inside a combi or other boiler that allows for expansion in the central heating loop when it gets hot, in installations where there is a hot water cylinder installation the pressure vessel a ballon sized red thing is often installed in the cabinet with the cylinder, this allows for the system boiler to be much smaller as well.
not obsessing but any modern(ish) boiler relies on pressure in the system to actually detect pressure changes, that is how central heating pumps know when to go and when to not go, boilers are all about detecting pressure changes to do stuff.
my question was about the central heating loop and I suggested somewhere there should be a guage showing the central heating look pressure, in a modern combi they are slapped on the front of it.
In a lot of hot water cylinder type installations there is often a pressure vessel installed in the same cabinet as the hot water storage cylinder and that will often have the pressure guage.
If a boiler has a very low central heating pressure it will often not even supply hot water on demand as per our valiant.
hope this clears things up for you.
Central heating pumps don't rely on pressure for turning on and off.that is how central heating pumps know when to go and when to not go, boilers are all about detecting pressure changes to do stuff.
It's not a combi, so won't have a diverter valve.A number of common faults on this , boiler are the diverter valve head motor the display board and the
pcb, either could cause your problem., it could be external controls.Unfortunately diagnosing intermittent faults can be a nightmare, over the internet is even worse, you would be wise to get someone Gas safe registered to call out and sort it , it could be any number of things. If you are any good with a multimeter you may be able to trace the fault for yourself. Ideal Isar and Icos boilers work on 240v switches.
It's not a combi, so won't have a diverter valve.
I am going to call them out tomorrow. I don't want to get ripped off so if anyone might know what the problem is I would be very grateful
I had a roughly similar fault on a Potterton boiler. Due to poor design the circuit board inside warps when the boiler runs and causes microscopic cracks in the solder tracks, which disconnects part of the boiler circuitry. Then the boiler would refuse to run. When it had cooled down, 50% of the time it would work again with no issues, 50% it needed a reset. It took weeks to identify the problem and eventually needed a new circuit board to sort it out.
I’m not suggesting you have the same issue, just that these things are really difficult to diagnose, especially an intermittent fault, without having access to the boiler and system. I’d get a heating engineer in.
It hasn’t got a secondary heat exchanger. It isn’t a combi
It hasn’t got a secondary heat exchanger. It isn’t a combi
Condensing boilers have a secondary heat exchanger to extract more heat into the system, making them more efficient.??
Wasn’t replying to OP mate, was replying to boogie man...
And my boilers a conventional boiler and does have a secondary heat exchanger:thumb:
It’s not a combo: no condensation trap.Just a bit of extra info - if you have any other issues - check the condenser trap (if it has one) is clear and flowing as it can block and back up into the secondary heat exchanger.
Also - as I found out last week, if you have any weird issues, check the ignition module - mine had got some condensation ingress - due to a blocked condensation trap and was confusing the hell out of the PCB / boiler, would be working fine and no reason, would stop....
We were with British Gas Homeserve but I got fed up fixing the boiler after each "maintenance" visit