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Thanks for the replies - all sorted!

Is there any way of stopping the above? The system works fine, but the siren beeps when I arm and disarm the system are not required. These beeps only appear to offend the neighbours and drain the battery! I cannot find a mute option in the manual. All advice appreciated. Thanks in advance.

Thanks for that info compheat. I have had this boiler for numerous years and never new that. I think the boiler was overheating at 14.4mbar, so was reduced to about half of that. I wish someone had told me about the variable rang rating years ago! The boiler has always had the pressure set to...

He clearly thought it was a good idea. Was just looking for a bit of advice whether to get it changed back on next service, or if it is fine to leave at the lower setting.

Have had new gas valve fitted to my Myson Apollo 30/50. today by RGI. He noted burner was fierce and boiler was noisy after fitting, so he significantly reduced burner pressure from manufacturers setting, as stated on case. Boiler is now quieter, but still heats up radiators. Main burner stays...

Yes gave taken all of 45yearsgasman's sound advice. The green button is as far out as it possibly can be. I have also tried to relight the pilot to see if this would change anything - but strangely I cannot extinguish the pilot light - it is stuck on! I have slid the green button over a good...

Pilot light is on, and have mains at solenid, but main burner will not fire. Do not have second solenoid to try, but think 1700 ohms sounds ok. Any other options before I bite bullet & get gas valve replaced? Thanks for all info - is appreciated.

I think you're right matt1e. The resistance sounds reasonable to me. So that leaves the gas valve as the most likely fault. But are there any other posibilities I can rule out?

Is this a high resistance? Or more likely to be a gas valve issue? Getting cold here..

Anyone have a definite on this? Would like to know before I order another!

Have got mains voltage at solenoid. Solenoid does not show an open circuit - but gives a resistance of 1720 ohms. Is this the correct value for the solenoid? This is on a Honeywell V4700E gas valve.

None taken. I appreciate your advice, and your caution. I simply didn't read your post thoroughly. It is a simple enough task to check for 240Vac at the solenoid with the boiler on. I appreciate a continuity check in situ will confirm the general status of the solenoid. I asked re a specific...

You are right on the boiler type, although it is badged as a Myson. I have got a multimeter - I work in datacoms. Does the solenoid have to be removed prior to testing? What values am I looking for? How is it removed? Thanks.

Thanks for replies. The boiler is a 15/30 as far as I know. It is not the fanfare model and does not have a fan. Is there a simple way to test the solenoid? And what are the other components that would stop it firing - the gas valve? Thanks in advance.

I have an issue with my vintage Myson Apollo boiler. On either central heating or hot water, the boiler won't fire up. The pilot light is on, but the boiler just clicks, but does not fire. I can hear the pump running. This is the case in both High and Low settings. About a year ago I had the...

The Viessman Vitodens 100 W Compact will also fit like a glove. I trust this is a slightly more expensive boiler, but is it a better bet than the Baxi? I am struggling to compare the two!

Is there an obvious choice between the Baxi and the Glow worm? Both seem to be available with a 5 year warranty. As for installation, is there an advantage in choosing someone from the manufacturers website ie an approved installer, or is experience in fitting the particular boiler of greater...

Is this a viable alternative to a Worcester? The WB was my first choice but is not compact enough. Any other options in a small combi? I've had a look but don't fancy the Ideal. Crezzer thanks for the info. Are these your preferred choice to fit, or what your customers ask for? I appreciate...

A Baxi Neta Tec fits the bill size wise. I know these are pretty new, but does anyone have any knowledge on these?

As the title suggests. Anything close to 380mm width would do the trick. For 8 rads / 1 bathroom. Looked at Worcester / Vaillant but the smaller ones seem to be 400mm width as standard. Any info appreciated.