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To be honest I forgot I had an older thread until you asked for how it was wired, I remembered I had taken pictured previously and found the thread. I will take the electrical cartridge out of the boiler tonight then to see how it is connected at that end and will let you know. Thanks

Thanks for the reply There is a picture of the back plate of my SCR in this thread: http://www.diynot.com/forums/plumbing/drayton-digistat-3rf-glowworm-flexicom-30cx-problem.295640/ I have not opened up the electrical cartridge of my boiler yet so I am not sure at the moment which...

Sorry to bump this but was just hoping someone might be able to help? Thanks Steve

Hi all I was hoping someone might be able to help. I have a Drayton +3RF wireless thermostat that was installed by the previous owners of my flat. Since moving in we have had problems with the SCR activating the heating whenever it likes (ie when the control is not calling for heat)...

Hi again Just following on from this, I found a second TRV in the flat with a couple of drops of water coming out by the pin inside the TRV when I took the cap off it. I'm thinking that 2 potentially leaking TRVs could cause the system to lose pressure? I have 2 questions: TRVs seem...

Thanks all. I'm going to get someone in next week as it dropped to 0.0 during the day yesterday and when I went to top it up the boiler started making a swooshing sound and I could hear the water filling up in the radiators so it must have been completely empty? Really hoping it's not a...

That's what I thought. Would replacing the TRV be something a complete novice could do or would I be better off getting someone in to look at it?

All of the rads are still closed off at each of their 2 valves, should I open these now? Would the leak in the TRV be enough to cause this kind of pressure drop do you think? I live in a second floor flat with concrete floors and I'm pretty sure all the pipes run through the floor. As this...

3:30pm and the pressure is now 0.6 bar.

Ok, so I opened the flow and return valves on the boiler again at about 10:30, was at 1.5 bar. It's now 12:38 and it has gone down to 0.9 bar. I'm guessing this is too much of a pressure drop in too short a space of time? The TRVs and lock shield (I think that's what they are called)...

It would usually drop down to between 0.3 and 0.0 overnight, basically low enough that the boiler would not work in the morning and would need topping up. Then by the time I had got back from work in the evening it would be back down to around 0.3 / 0.0. This has been happening for months...

Ok, I've just been out to check the boilers pressure after leaving it isolated since 2:30 yesterday afternoon and it has dropped from 1.8 to 1.6. Is this normal? Surely at that rate it would be at 0.0 within a few days? I have not opened it back up to the rest of the system yet.

I think the screw in seating that the pin is in (not sure of the technical term) on the trv was not screwed down all the way as I have just found that I could tighten it up a bit, perhaps this is what the pressure was dropping if it had not been tightened up properly. When I open up the...

Thanks again, restarted the test about 2 and a half hours ago. Set it at 1.8 and it has stayed there so far. I'll leave it isolated overnight and see what it says in the morning. If it stays at 1.8 all night and then drops in the morning when i open it up again then hopefully the problem is...

Thanks again! Sorry, just got another few questions as I really want to get to the bottom of this! So a leak in a hot water pipe somewhere wont cause the pressure to drop? Is the pressure only for the heating system? I had already isolated my boiler in the way you described earlier today...

Thats great, thanks very much! Should I turn the power to the boiler off at the wall or just deactivate the heating in the boiler panel? Also does it matter if the cold water inlet is open or closed for this test?

So any sign of water when taking the head off the TVR could cause the boiler pressure to drop to 0.0? Is anyone able to advise the correct way to isolate this boiler so that I can rule out a boiler fault causing the pressure drop? Thanks again

Hi Thanks for the quick reply. I have just double checked the TRVs and I took the head off one in the bedroom and the valve itself inside was wet. No more water is coming out now when I push down on the pin though. Should no water at all, ever come out or is a couple of drops normal...

Hi I am having problems with the above boiler rapidly losing pressure in a short space of time (ie 1.7bar to 0.0 overnight) Have had glowworm tech out twice and he cannot find anything wrong with the boiler, he also did some kind of test to check for leaks in the system but couldn't find...

Hi I have just moved into a new flat and am having problems getting the central heating to come on. The flat has a Glowworm Flexicom 30CX boiler which is controlled by a Drayton Digistat +3RF wireless thermostat. I can get the green light on the Drayton SCR receiver to come on and the...