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Thanks agile. I saw this about the flue spillage detector in the manual but I can't see one on my boiler. From the diagram it looks like it's on the underside of the control panel box and I've attached a photo. The mains cable goes in at one side, and the cable to the gas valve comes out the...

underside of control panel box, showing thermostat wire and mains lead

Myson Marathon 600C data plate

My boiler was working fine till yesterday for both water and heating. Now no heating or hot water. The pilot light is fine, I have switched it off and re-lit it and it stays on fine. I've checked the electrical supply to the boiler and it is also fine. When I turn the boiler thermostat knob...

What kind do you recommend?

The time clock controls the central heating and hot water. Does this have much significance? If I'm getting a new CU I might as well get all these switches tidiedup and get the latest standard and best practice so that it'll be good for a good few years.

Scottish Power told me they had to fit a new meter as the old one was no longer suitable (the house is about 40 years old, don't know if the meter is original or not). When their engineer came he said he couldn't do it and I would have to change to a modern consumer unit first. He said the meter...

Photo of meter cupboard showing fuse box and meter circuits.

My Marathon Myson boiler has a problem. It seems that when the hot water is on but the heating is off, either because I have it programmed for hot water only, or when the heating is on but the ambient temerature is warm enough not to trip the room thermostat, I get no hot water. However if I...