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I have a spark and pilot is lit, but main burner does not ignite. If I partially cover the flu on the outside wall for 1-2 seconds, the boiler fires up. I realise that this is not a recommended action, but it is the only way I can get the boiler to light.

This problem has now foxed 7 CORGIs. The boiler has been regularly serviced, the last time just a few days ago. The pipes have been vacuumed and the pilot cleaned, and it always works OK for a short while after the service. (It was fine for 10 months before this service in fact) I have had every part on this boiler replaced, but the problem still exists. looking at it from a laymens angle it seems that there is either not enough gas coming through, or too much air, but why would it work OK for a period of time?

I'm not keen on going for a new boiler in case it's a supply problem that would occur anyway. One CORGi suggsted it could be debris coming from my caste iron gas pipe, but there is a filter I believe.

Anyone got any ideas? Cheers in advance

Hi,

Does the fan run freely - without struggling?

[quote="Steve the gas"]Hi,

Does the fan run freely - without struggling?[/quote]

Hi Steve, yes the fan is running fine. Boiler came on this morning, but it's just as likely to just keep on sparking tonight without igniting. Sometimes I can see the pilot flame through the view window and a spark, and other times just a spark. This is what makes me think that the pilot still has some dirt in it. Having said that the pilot assembly was replaced a while ago, and it still hapened almost straight away afterwards.

A couple of years ago a CORGI cleaned it with a pin (Baxi tell you not to) and it worked for ages after that without any problems.

OK, folks, anyone know anything about the airflow differential switch. I assume that this comes on when the boiler does. Someone said that there could be a blockage in one of the pipes here. Anyone know where this area is located on the boiler.

Cheers

They are referring to the APS, and should not be messed with by none Corgi persons.The tubes or fan spigots could be blocked a little, but, I'm afraid still an RGI job.

[quote="Steve the gas"]They are referring to the APS, and should not be messed with by none Corgi persons.The tubes or fan spigots could be blocked a little, but, I'm afraid still an RGI job.[/quote]

Cheers Steve, I managed to get through to Baxi yesterday. They say it needs an engineer with a multimeter. They also agree that the fault seems to be linked to the APS and or venturi. I'm just a little nervous about CORGIs at the minute as I have has several look at this problem, and some have fitted parts I obviously haven't needed, like a gas valve, pilot assembly and HT lead. One even changed the pcb, and only put the old one back when I complained it made no difference.

What area of the country are you in ?

[quote="Steve the gas"]What area of the country are you in ?[/quote]

Not far from Portsmouth.

[quote="zambo"][quote="Steve the gas"]They are referring to the APS, and should not be messed with by none Corgi persons.The tubes or fan spigots could be blocked a little, but, I'm afraid still an RGI job.[/quote]

Cheers Steve, I managed to get through to Baxi yesterday. They say it needs an engineer with a multimeter. They also agree that the fault seems to be linked to the APS and or venturi. I'm just a little nervous about CORGIs at the minute as I have has several look at this problem, and some have fitted parts I obviously haven't needed, like a gas valve, pilot assembly and HT lead. One even changed the pcb, and only put the old one back when I complained it made no difference.[/quote]

Still waiting for the 7th CORGI to have a bash at it. One has been back 6 times and another 4. In fact I'm getting fed up of CORGIs, can anyone recommend a good Alsation, I'm sure they would do a better job.

I'm having second thoughts about it being an air problem, because when the boiler is hot and goes off for a bit, the boiler on light flickers and when the temp drops, the boiler comes back on no problem. Also, when it was cold and trying to come on the other day, I tapped the side of it, and the pilot light seemed to get a bit bigger, and the boiler fired.

Still confused.

Hi,

Has it been serviced? Sounds like pilot partially blocked prhaps, part changing only works by luck-- not good.
Look up Hinton Heating on the web, I know him and he knows what he's doing, he may take it on?

Hth

[quote="Steve the gas"]Hi,

Has it been serviced? Sounds like pilot partially blocked prhaps, part changing only works by luck-- not good.
Look up Hinton Heating on the web, I know him and he knows what he's doing, he may take it on?

Hth[/quote]

I'm very grateful Steve. Many thanks

I've only just found your posting so you may already have things sorted.
It sounds to me like you may have a faulty spark electrode. There is probably a hairline crack in the ceramic shield and the control panel is not recognising that the pilot flame has been established.
This is often the fault when a Solo will operate properly from cold but begins to misbehave upon re-ignition after the stat shuts down.
Baxi solo's have always suffered from this problem. I would replace the spark electrode and HT lead.
Good luck.