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    Vaillant ecotec 438 overheating on HW

    Hi all the vaillant ecotec 438 is overheating when HW is on HW only - If flow set to 60c it goes up to 80c It's fine on CH When both CH and HW on together it will go up an extra 10c Here's a video with it on HW only
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    Wifi extender running on electrical cables

    I'm trying to get a decent WiFi extender and come across this one from argos. It seems to suggest the connection is boosted or is stronger by having them plugged in to the same electrical circuit? How does 2.5mm cable, supposedly fitted decades ago, make the wifi connection stronger...
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    Vaillant ecotec 438 clunking noise

    Random the boiler makes clunking noise as if water is being forced through it?? Here's a clip
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    Cable getting discoloured / lifespan of cables

    What causes a cable to get discoloured? I have a heating/hot water issue however the cable that comes from the boiler to the pump gets discolored on one side (on the side that connects to the pump). The discoloration can take a few weeks. This then causes a delay for the heating/water to come...
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    Heat lamp / infra red

    I'm trying to buy a decent heat lamp, the one with the red bulb, but they're quite poor and not many about. I've seen some with a holder only without a stand. Ideally I need one with a stand. Can I make my own? What sort of cable size would I need for a bulb that dishes out 100-275w? And...
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    Central heating pipes HW cylinder against joists

    One of the issues I've encountered is that central heating pipes against joist that cause buzzing or vibration noise when CH is on. It's worse with HW as the HW cylinder is made on a timber frame and again that's sat on joists. I've tried using bits of pipe insulation against one of the CH...
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    Grundfos ups3 pump connector plug

    Does anyone know if the connectors / plugs can be bought separately? The screws in these things are easily rounded.
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    Convector radiators catch 22

    So the saga continues, as the convector rads can operate on a lower boiler temperature this then means the towel rad in the bathroom is lukewarm. Despite balancing the system and turning down some convector rads the towel rad isn't getting hot. At 60c on the boiler the house is warm but the...
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    Bathroom radiator lukewarm

    Bathroom rad is lukewarm when CH is on. When HW is on it is hot. Had new big radiators fitted, and kept the same towel rad in bathroom. Prior to this the rad got very hot with the old rads when CH was on. Bathroom rad has been plumbed in so it comes on with CH or HW. But when HW and CH are on...
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    Drayton Programmers the most useless and difficult ones?

    Got a Drayton LP522 and honestly it's the most difficult and annoying user menu. These models have been in use for 20 years at least. They could have improved it in that time. Had a siemens for 15 years and it was very easy to change times / change 5/2 to 7 day same etc without the need of...
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    Having a cover on the header tank for open vent system

    Is it ok to have a cover on the header tank to prevent any debris / dust getting into the system or should it remain open as the system name suggests?
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    Heating system wiring centre - wago connectors?

    Has anyone used wago connectors instead of the traditional wiring centre with the terminal block? What's your experience been? Easier to wire and diagnose?
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    Grundfos ups3 making noise

    Hi all, I got a grundfos ups3 it's on the 3 setting and as per the attached video it makes a loud noise. This can be heard in the landing and ground floor 2 and the pump is the loft. I believe I have installed it correctly however I always get confused regarding the shaft orientation. I have...
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    Vaillant ecotec plus 438 no heating or hot water

    Morning all, Heating was left on last night, and hot water came on at 7 to 8 am and now I can't get either hot water or heating to work. The pump does work however as I have done the pump test from the boiler. Can the 3 port valve be faulty? But in any case the heating or hot water should...
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    PIR light switch

    Hi All, Got a PIR light in the porch, currently there is a double pole switch which provides the power to it and the other switch turns on the landing light. Can I use a double pole fused switch - so the fused side constantly provides power to the PIR light and the other switch turns on the...
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    Electric door bell not working

    Hi All, Got an older electric door bell with 12v transformer on first floor. The transformer shows 12v on the multimeter (without the fuse inserted, with it it doesn't show 12v). The first floor chime has 12v going to it, and there is continuity of 003. The downstairs chime does not show...
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    Henry Hoover no power or intermittent power

    Henry Hoover, does not power up and sometimes when it does it switches off and doesn't come back on. I have bypassed the pcb which is a common issue. Still same problem. The brushes look fine. I haven't changed the on and off switch but when I use a live tester it doesn't indicate any power...
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    New radiators colder at the bottom even with powerflush

    I had 10 new rads fitted, powerflushed and a lot of magnetite and sludge came out from the pipes. However they still remain cooler at the bottom than the top. There can be a 4-10c difference between the top and bottom. I have measured with a infra red / laser thermometer. Any suggestions...
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    Vaillant ecotec 438 short cycling

    Hi all, got a Vaillant Ecotec 438 since 2009 and I never noticed this but it seems to be cutting off or short cycling. Had new rads fitted recently and when the flow is at 70 the return is now a measly 35!! Prior to the rad change a 70 flow = 46 return. There are 11 rads in the house in total...
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    handle isolation valves any good?

    Never used one, my full bore slotted valve on the shower is playing up could do with a replacement, just thinking ahead and thought rather replace it with a isolation valve with a handle? They arent gimmicky are they I know there is a full bore and a ball valve for the screwdriver ones? Do...
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