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Ive just replaced the LCD terminals for 2 new LED terminals - thought I had followed the correct wiring (the wires are in a different orientation and the cable colours where different between the upstairs and down stair box) when I reconnected but when I put power back to the system (G4 box). A...

Hi. I have a Vaillant Eco Tec Boiler we have just moved into the house and it looks like it was installed in 2007 - we’ve just had it serviced about 2 months ago and it’s now leaking and needing topped up every other day. Nothing on the radiators but the discharge pipe under the boiler I...