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Checking resistance value over each component with a multimeter. Broken element would usually give you an open loop. And thermostats have a specific resistance they should be, but again open loop wouldn’t be a good sign.
I’ve not done a huge amount of fault finding on boilers and stuff but that’s my basic understanding.
Nef-
That’s pretty much what I’d do to check them, I’ve actually got one to go fault find on Monday
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Nice - thanks.
Turns out that one of my multimeters doesn't work at all, and the other is flaky af.
Neither the element nor the thermostat seems fucked - Both have reasonable resistance, and the thermostat resistance is infinity when it is supposed to.
Back to testing!
konastab01
NotThamesWater
Plumbing questions - How do I tell if it's the immersion heating element or if it's the thermostat that is borked in my unvented cylinder?
And two port zone valves - is there any difference between brands (other than price)?