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My Fluke reads 10.77K with the boiler cold. Think I'll throw the other meter in the bin! It was a get-out-of-trouble purchase a few years ago.

I was using my horrible £10 non-auto ranging Homebase meter. I'll get the Fluke on it and test it properly asap. Thanks for that.

Excellent. Thanks very much!

Just wanted to re-assure Tony that I will not be blowing myself up based on any advice given here. I am a qualified mech engineer with sixteen years diverse hands-on experience, not Reg Prescott! With the OP in mind, does anyone know why a thermistor should become glued into its aperture in...

Right then, I'll change the pcb relay and see if that cures the intermittent boiling. Thanks for the help

Thank Tony The thermistor is reading 200 Ohms at the pcb end with the boiler cold, I haven't tried reading it as the boiler cools from hot yet though, but the 200 ohm reading suggests it is not broken to me. I just wanted to swap it out whilst I was working on the boiler. I think it should...

Hello My Ideal FF260 has been boiling the water in the hot water loop recently, it does it every month or so, and the rest of the time it works perfectly. Today I removed the PCB and found black carbon deposits inside the clear housing of one of the relays so I am going to change that since I...