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Once the stat is turned up and down (off and on) the boiler works fine and the heating works. It just seems to require this off/on action to trigger the boiler I.e. the boiler doesn't seem to recognise that the stat is on when the programmer activates the circuit. It seems to need a 'burst' of...

The m/v is beside the cylinder in the airing cupboard and the pump is in the boiler housing. The hot water and heating are controlled separately on the Honeywell programmer. If the c/h is off and the h/w is on then the system works OK.

I'm pretty sure it's a full-pumped system because we have no roof space so no header tank just a cylinder on the first floor and the boiler on the ground floor. There is a cylinder stat. I don't believe the m/v is energised by the room stat but I'm not knowledgeable enough to be sure.

Thanks for your interest bug I believe we're getting off track. The problem is that although the stat works it's failing to start the boiler. Can anyone advise as to what component in the boiler the stat is connected or is there no component I.e. just a connection box?

Seem to be four pipes. Fully pumped. Two port valve. The pump runs. Honeywell STC6400c programmer. I have a multimeter.

Yes, I meant above the ambient temp! No the whole boiler is inactive until the stat is turned down then up again. There are two leds on the control panel of the boiler - one to indicate the burner is on and one for mains power and both are off until I turn the stat up and down. There is one...

BBJ 95/130

I have an oil fired Boulter Buderas Camray 5 boiler. The central heating system includes a room stat and a Honeywell programmer. The programmer works OK and I've just replaced the room stat because I thought that was the cause of the boiler not operating as it should but not so. Even when the...

Thanks to all. How do I identify whether the socket I propose to take a spur from is itself a spur? The house is 6 years old and has not had any other electrical work done since then so could I assume it's not a spur or is it normal practice to include spurs even on initial installation?

I want to mount a 13 amp socket on an oak pillar just above floor level. I propose to take a spur from an existing socket approx 3 m distant however the cable will have to be surface mounted and needs to run just above floor level and be secured to the bottom frame of a sliding door, which is...

I want to cover a small leanto with a flat roof. The area is 5' x 5'. I'd thought to cover it with ply and then roofing felt but that means buying two 8' x 4' sheets of ply to make up two 5' x 2' 6" panels and then buying a whole roll of roofing felt, much of which would be wasted. Any...

Sorted. Have made up a lightweight extension lead - clearly marked 3 amp max.

TicklyT Thanks - but I've figured out how to extend the cable, I'm concerned about the possible loss of power over an extended length of cable and even over-heating.

I would like to extend the cable between a mains charger for a portable router and the router itself. I want to keep the weight and bulk down so don't really want to have to lug a 13amp extension lead around so wondered whether I could cut the cable and splice in an extra length or would...

Can't find a leak. I tested the PRV and re-filled the system then shortly afterwards the pressure rose to just over 3 bar from 1.5 bar, the PRV activated and I saw water in the tundish. So maybe the prroblem is in the boiler not leaking pipework. Am going to check the pressure vessel...

Thanks to all contributors. PrenticeBoyofDerry - you're right the workshop light will go out when the garage doors go out. The purpose of the workshop light is so that there is sufficient illumination walking from the car to the house - it's very dark. There are other workshop lights but...

Yes, I want to have the lights operate when the doors open. I'll just pay up and get some more cable. I don't think the saving on a bit of cable will buy you a double garage Chivers67 - I just don't like spending money I don't have to. I think that's called financial prudence...

I think the 3 bar pressure relief valve on my system is leaking. Do I have to drain the system down to fit a new one?

To chivers67 No, it's not a big job but I've got enough cable for one run and not enopugh for two so was hoping to do the job without having to buy more cable. Just a cheapskate really...

I have two electrically operated garage doors each with its own internal light that are activated by built in timers. I want to take a feed off each light and feed it to another, dedicated, light socket further down the long workshop, which links to the house. I was wondering whether I could...