Boiler working even less

[Totters]

Ordered flowswitch arrives in shop and boiler gives up ghost. It gets spark, initial flow of gas dies away. Wouldn't come on after several tries at turning hot tap on so we decide to put heating to constant. Initial success so, after showers, turn it back to timed overnight. Morning comes and radiator heats up but hot water doesn't come...then, even though on constant, radiator cools. So now no heating or hot water. Back to theory of pcb. Please help before we waste money on flowswitch or even worse, a new pcb.

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Forgot to say its Bosch Worcest 24i rsf. Hubby also wants to know if all B. worc pcbs are the same and one size fits all?

MOD

please see item 10a

 

[DP]

Why is a pcb the most suspected item?

Has your boiler been serviced annually? By service I mean a proper service not the 10 minute look.

The boiler goes through a sequence of operation. The engineer needs to be in front of the boiler to see what is not happening to proceed with faulting. He needs to use multimeter, U gauge, his senses and knowledge (honed over a period of time). Most of all, he needs to know how the boiler sequence runs.

Pcb is the last component I would suspect. In a lot of cases (for me anyway) lack of service is the culprit. Components do fail but pcb failure is not that common (unless you have certain boilers)

 

[Totters]

Thank you for your attention. As my husband is an Advanced Craft Plumber with some gas skills it is appropriate that he at least gives it a shot. Not all of us are swimming in money and before he admits defeat he has a go. I, as a woman, love this site because of the reassurance it gives me to know what may be wrong before I call in a professional. I am sure you would do the same say, if it was your car or washer.

As it turns out, we have found a heating engineer who lives just round the corner who got out his diagnosis computer and our gas valve was set incorrectly. This neighbourly act has saved us £100 to £150 quid.

I'm sorry if it was potentially out of your pocket.

 

[ordo]

seems very strange he used a pc to find the gas valve was set incorrect. You would use a u gauge for this and adjust gas pressure to suit via adjuster.

 

[doitall]

seems very strange he used a pc to find the gas valve was set incorrect. You would use a u gauge for this and adjust gas pressure to suit via adjuster.

Careful ordo lots of boilers have that feature built in.

 

[kevplumb]

think you can do it on the panel on 1 D cant remember which tho (carling)

 

[namsag]

Going back 5 years ago BG had certain boilers on test that had self diagnostics attached and a modem that would phone straight through to office computer to say it was either starting to break down or already had and what the fault was.

 

[DP]

[quote I'm sorry if it was potentially out of your pocket.[/quote]

Do not understand. Me out of pocket? Was only advising not offering to do the job!!!

 

[Agile]

I think John that the "diagnostic computer" was probably a flue gas analyser with built in manometer! That would have shown up a gas valve fault.

Tony

 

[doitall]

I think John that the "diagnostic computer" was probably a flue gas analyser with built in manometer! That would have shown up a gas valve fault.

Tony

No they plug into a special socket on the boiler, you can do everything from the computer.

The guy from Carter pumps had the same type of kit for setting the maximum pressure of the pumps ( no user adjustable parts ) That way they corner the market