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You're spot on. Thanks for the explanation. I ran an extension cable from socket from the boiler circuit to ufh wiring Centre and pump and no problem at all. I'm going to put the boiler on a fused spur on the same circuit as UFH - this is simple enough to do and hopefully cure it.

So the only wire connecting the two circuits is the external wire from the UFH wiring centre to the microswitch wiring. Would this still be a borrowed neutral situation?

The underfloor heating has it's own pump too and it's oil fed - not that it makes much difference!

Yes. An alternative to this I could run a long extension to the underfloor heating from the same circuit as the boiler - this is what I did before the electrician came! A bit messy really but I suppose a good test or add the boiler on the new extension. I totally understand that it's not good...

Hi I have a wunda underfloor heating wiring centre that calls for heat and fires the boiler from a switched live that connects to a zone valve. When the call for heat is made the RCCB trips. I have disconnected the pump and tested and it's still tripping so maybe it's a faulty zone valve or...

Yeah I did read that there can be buzzing / flickering issues sometimes with LED's. I thought the more sophisticated dimmers might cope with this!? Anybody any experience of this?

Hi, We have decided that we quite like these lights https://www.next.co.uk/style/st132278/818334#818334 When I read the bumf it says to use halogen G4 lamps, this is putting us off slightly as why would we be using / why are they selling halogen when LED's are becoming the norm!? I have...

I have thought about this , it's a possibility but it means a fair bit of cutting and notching through the timbers I put on to screw the plasterboard onto and the timber is just roofing lath and might destroy when I drill/ cut it!

Not really. It's got about 6metre run down lintel up walls, it would make a right mess. It's my own fault!

Yes. I have all of the above and it sounds like a good shout given the little room I have.

No. I just looked at those and the gap is only a few mm.

Hi I made some mis-calculations when running my lighting cable and need to extend the cable by about 1 metre. I have some decent connectors (wago etc) but I have no room to place a wago junction box becasue the cable runs under a steel beam with little room. I can get the cable connected but no...

Thanks to all the great suggestions for helping with the boiler. I have had help fixing my boiler for over 10 years with some of the same guys helping every time - that's quite something if you ask me. I am three days in after oilhead suggestion of a longer photocell and not one lockout! The...

Thanks for replies. I will start with the easiest! A longer photocell and good clean of blast tube area. I will report back.

No. I never thought of this. So should be OK to put the longer version in, I didn't realise you had a choice?!

So I started the boiler with the photocell in my hand and then showed it light once fired so i could see the flame and it looks clear. Sometimes the fan spins just for a few seconds to start with so I will replace the start capacitor anyway but pretty sure this isn't the main problem.

I put a spare photocell in and it ran for a couple of hours great and then started playing up. I am not sure the HT leads are in the way are they. I took a pic with the torch shining down where the photocell is to see if the path was OK. You can just see if you look carefully? If I pull the...

It's a Bentone DKO 970. The plumber had a spare control box he leant me and it did the same. I have put the old photocell back in and will try that. You can just make out the tip of photocell in this photo. The plumber said you can sometimes move the electrode holder thing and there is an allen...

another observation is that often when it does fire, it will run for a few seconds and then lockout. So I can hear the motor/fan, electode click, pump solenoid, fire and then dead. Sound like fuel supply? Maybe disconnect fire valve and check flow outside?

Is it worth checking the oil flow? Is there an easy (basic way). I just cracked the nut off at the bottom of the pump to bleed it and seems have good pressure?