Compatible gas control valve for obsolete Honeywell

[fixitflav]

Nice one I will keep a record
Thank you. Chking

No problem. I've been meaning to ask - why the Evelyn Waugh photo? I'm a big fan of his myself!

 

[Rob Foster]

No problem. I've been meaning to ask - why the Evelyn Waugh photo? I'm a big fan of his myself!

I like him, my two others are Maurice flitcroft and Brian o’nolan ......chking

 

[Harvest Fields]

Wrong place

 

[fixitflav]

I like him, my two others are Maurice flitcroft and Brian o’nolan ....chking

OK, I hadn't heard of the other 2 but you've tempted me to read Brian O'Nolan sometime.

 

[Harvest Fields]

I like him, my two others are Maurice flitcroft and Brian o’nolan ....chking

Why do you have 2 others?

 

[BruceK]

It might not be the Gas Valve.
I know you don't want to change the Boiler but in my experience, the time has come.
Even if you track down a Gas valve that is made for the job, you could find it was not that after all and be back to square one. Old Boilers with obsolete parts are a nightmare.

My gut feeling for what it's worth, is that it is not what you think it is.

It might come down to a new boiler Last Plumber, but I'll explore other avenues first, and if I can get a reasonably-priced replacement valve I feel it's worth trying. My gut feeling is that it's the spring that's not pulling the valve shut strongly enough. I'd be interested to know what you think it might be though. With the front cover removed the boiler behaved perfectly.

 

[BruceK]

If it is the solenoid valve this might help. My boiler stopped firing last year and I tracked it down to one of the 2 solenoids on the gas valve, which had gone open circuit. On the internet I found Solenoid Valves UK, who do a live chat. Gave them the dia and length of the tube thing the solenoid mounts on and they quoted their nearest, less than £12 so well worth it just as a test. When it came it fitted OK but the connector was in the wrong place and I had to do a temporary (but perfectly safe!) wiring mod. Everything then fine. It took a few weeks to get the right replacement from Italy, which cost £37 by the time various outfits had taken a cut.
I was impressed by Solenoid Valves UK, it might be worth contacting them if that is your problem. Though perhaps unlikely as the solenoid opens the valve, it's spring close so if dodgy closing is the issue the solenoid probably isn't the culprit.

Thanks for that information fixitflav. It just goes to show the mark up that some companies are loading. For instance, AK (idealsparesonline) charge £370+ for a valve that others are charging £170 for.
I think you may be right in your diagnosis, though; the flame comes on okay, which suggests that the solenoid is working correctly. Another thought I had was that the injectors might need replacing. It appears there's either too much gas, or too little air at the point the flame dies down (but it works fine with the front off).
By a process of elimination and the coming together of great minds (yours not mine) we'll do our best to boss it. Thanks again.

 

[BruceK]

I know the head if Oem Honeywell uk so if your quest stalls let me know , he might be ok to help...centralheatking

Thanks very much Rob. I might take you up on that one. Honeywell were, let's say, polite but not very helpful. I got the impression that the lady in India didn't really know much about gas valves and just wanted to get me off the line because I was asking a rather difficult question.
All I really need to know is whether other gas valves in that series, such as the V4400C 1211, will handle LPG. In the same property (we run a B&B) I also have two other boilers (Myson Economists) which, when new, were converted to LPG. They use the same Honeywell gas control as the natural gas version; (the conversion instructions which came with them give all the details of what needs to be changed) and it's just the pilot and main injectors that are reduced in bore to cope with the increased pressure of LPG. I can't see why this valve shouldn't be the same, but...…... maybe your friend will be able to shed some light on the issue.
Thanks again.
BruceK

 

[Gasmk1]

Thanks for that information fixitflav. It just goes to show the mark up that some companies are loading. For instance, AK (idealsparesonline) charge £370+ for a valve that others are charging £170 for.
I think you may be right in your diagnosis, though; the flame comes on okay, which suggests that the solenoid is working correctly. Another thought I had was that the injectors might need replacing. It appears there's either too much gas, or too little air at the point the flame dies down (but it works fine with the front off).
By a process of elimination and the coming together of great minds (yours not mine) we'll do our best to boss it. Thanks again.

i would say the problem is down to the burners air gas mixture.

 

[BruceK]

i would say the problem is down to the burners air gas mixture.

Thanks Gasmk1, that sounds logical too. Since it was okay with plenty of air does that mean there could be more gas than there should be? Would you think the jets might have become enlarged and are letting too much through? The flame doesn't seem too fierce though.