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OK - shall get it checked.

It has been working since then and the noise too is much less. It was just 2 screws that needed removing for the outer casing - haven't touched anything else though. Could that still disturb the room seal ?

Thanks. Well, it is currently working, but a bit noisy. Of course, I'd get a gas safe engineer to replace it - just trying to find out if it is the Fan and how much time and cost would it involve. I guess about an hour's Labour.

I have a Potterton Suprema 40 Boiler. It started making a noise recently which sounds like Fan Noise. There was some trapped Air in the Air Vent in the Airing Cupboard near he Pump and the Valve. Releasing that helped the Noise a bit. Today, I cleaned the Expansion Tank in the Loft before adding...

One of them is permanent Live (Tester glows).

Spot On. There is a junction box behind the Extractor Fan Switch and the Neutral there was not connected. Connecting that completed the circuit and I can see 245 V across the Live and Neutral of the Shaver Point now. However, the Extractor Fan is not working, which could be due to the fact that...

Here are the photos.

I'll upload photos soon. Just to clarify, the pull chord switch operates just the main bathroom light and also the extractor fan (which has a timer), so the fan comes On when the light is On and goes Off after the light is switched Off. There is a separate switch to turn the fan Off completely...

I've checked. The Light Socket has just 2 connections - Live and Neutral - so I think it can't be wrong. The Pull Chord is a bit more complicated. I think the incoming has 3 cables + Earth - one Red (Live), 2nd Red with a Yellow Sleeve and the 3rd Blue (Neutral). The outgoing has 2 cables +...

Thanks a lot. I'll switch off the MCB and check the light connections and report back.

There is a MCD for the whole Bathroom (light and shaver). Yes, they did change the bathroom ceiling light and the pullchord. Maybe, I should check those first. The cables that come out of the wall are quite thick and sturdy Copper Cables and insulated too, so I was surprised that it could be broken.

Hello forumites, I had a Vysal Shaver Light cum Dual Voltage Charging Socket which was working perfectly until the builders opened it up for Tiling. Now, after they re-connected, it doesn't work. I bought 2 new Shavers and none would work either. On checking, I found that they do work when...

It was the cutting of the Link 1 which sorted the issue.

I have taken the Programmer out from the Backplate / Wiring Centre and checked that there are no loose strands. The Ground connection to the Programmer terminal was almost open (at the back plate). With the Programmer disconnected, there is no Power to either Red or Yellow of the Room Stat. Red...

I'd try to trace it. Today morning I found that both the Red & Yellow on the Room Stat were having low Volt (tester lit dimly) when the Programmer was Off and the Boiler didn't fire. However, on turning the Programmer ON (CH), full Volt appeared on both Red & Yellow (with the Stat removed) and...

Sorry the Stat is a Wired Drayton Digistat 1 (2 cells) and the Programmer is a Honeywell 6400C with 3 On/Off and 7 day setting and the Boiler is a Potterton Suprima. On the Stat, Only 1 (red) and 3 (yellow) are connected. On the Programmer, apart from the Ground, 5 wires connected : Live...

Sorry for the delay. Both are Honeywell (the Programmer is a Honeywell 6400C with 3 On/Off and 7 day setting& the Room Thermostat is a Honeywell Electronic). Problem 1 : I haven't checked with a multimeter. However, with a tester, I can see Full Voltage (Glow) on the Red wire of the...

Some time back I posted a query in this Forum about Boiler either ignoring the Room Thermostat or the Programmer. I was suggested (by D_Hailsham and others) to get the Sunvic MoMo 3 Port Valve replaced by a Honeywell. After getting this done (Honeywell V4073A), the Boiler is now completely...

Could someone suggest how much re-wiring is needed to replace a Sunvic MoMo Valve by a Standard spring one like Honeywell (apart from draining the system). Is it just the wiring between the Actuator and the Programmer or do the wirings in the Room Thermostat and the Boiler need to be changed too...

Yes the number SDM 1901 is present. I think you are right about the Valve problem. I get all sorts of problems - sometimes the stat controls the bolier (according to the set temp) even when the Programmer is OFF. Again, at other times, when the Programmer is ON, the stat is totally ignored...