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Sadly by the time I killed their valve L&G had long been taken over by Siemens, whose CMC322 was the direct replacement.

As I was not making progress to cure fault , plus pressure from daughter to get something done, I've today had an engineer fit a new Honeywell. All now OK. Re dilalio's comment: I can only say that original Landis & Gyr valve lasted 18 years until I shorted the circuit board whilst carelessly...

Many thanks. Will try this.

Seems to be stuck in a mid-position because when CH on (and programmer at CH only) a lot of heat gets to HW , the temperature of which rises way above cylinder thermostat setting. Valve is 7 years old and from what I've recently read it seems Siemens valves are not noted for their long lives...

Thanks DanR and Madrab for your advice. I’ve engaged a Gas Safe pro. who succeeded in lighting the pilot explaining that programmer has to be turned on (meaning power also reaches boiler which ignores Ideal’s instruction that power should be off ?), but boiler will not fire. Diagnosis was I need...

Changed faulty (though still performing basic functions) Potterton EP2002 for replacement EP2, so had to turn off power and hence boiler. To light boiler I followed instructions:- 1. Power and thermostat off 2. Slide Power Control Button to right, release and wait 3 minutes 3. Depress PCB and...

Thanks OldKettle. Having interrogated AVG at length, I accept their assurance that they do not keep or track passwords. Having searched Firefox I found there were several old and non-hazardous passwords stored, so I believe the pop-up must have come from them. Its a pity that I did not pay more...

Thanks again D. I'll investigate position with AVG. Final sentence of my last post was stupid. I had forgotten that Firefox does indeed ask if passwords should be saved - despite being brain dead yesterday I'm fairly confident that I have always declined its offers, but it would be doubly not to...

Thanks Doggit. Program is AVG Free. I have never knowingly saved passwords, except in a very cryptic form in a Word doc. and without identifying accounts to which they relate. I don't even know how to save passwords in my browser, but do you think it is likely that this might have inadvertently...

Recently I got a pop-up from my AV, telling me the numbers of passwords that I use which it says are weak or duplicated. This could be true of sites which oblige me to open accounts but where I see no real threat to me should an impostor reach them - meaning the worst that could happen might...

Garden loo, vintage Ideal pan, needs a cone with bigger diameter than the only size my local merchants offer. I found online a firm offering many sizes from about 65 to75mm diameter but have managed to lose their name/address and now can’t trace them. Does anyone know of a supplier of...

I'd assumed that after initially heating my house what I have to pay for is the net loss of heat from the house. When its cold outside, the higher the house temperature the greater the heat loss so maintaining a high temperature overnight will cost me. But I have no relevant expertise, so...

Will be grateful for help on this. System Windows 7 + Thunderbird with two accounts, O2 and BT. No problem with BT. O2 account gets incoming mail but will not send messages (even though they later appear in Sent folder) saying "An error occurred sending mail: The mail server sent an incorrect...

But would add that it seems to me safer to observe JohnD's advice.

Sentinel's Product Facts say , "no limit to the time product [X 400] can be safely left in the system".

I'm not good at sending messages. My first three lines were supposed to be selective quotes from OP.

Landis MA-V322 three port diverter valve. Can I replace it with a Honeywell one which I understand is better? Which 3 port valve would you recommend for my system? Siemens (who took over Landis) make a direct replacement - CMV 322. I fitted one in 2012 very easily. Fitting is identical...

Thanks to Jackrae, ianmed, and Chris R for their advice. The test sounds pretty simple and, if I'm right and one motor is OK, seems well worth doing to save about £14 plus the time and trouble of getting to a supplier. Jackrae - "Yes" to both questions. Will motor need earthing?

I’ve come across two motors. I suspect one works and one is scrap. As the valve is not very accessible, I wonder if and how they can be wired "on the bench" for a test. Any ideas please ?

Thanks Alastair. I meant to post to Plumbing & CH but it was one of my Christmas Eve mistakes. Will try to put it right later.