Discuss Immersion faulty??? in the UK Electrical Forum area at ElectriciansForums.net
These are often open when you take a new immersion out of the box, especially if they're the round type,* separate from the 'stat, but that's not relevant if 230 volts was measured directly across the element terminals.Hi-limit cut out reset?
Always give to plumber. it’s a nasty job, even plumbers don’t like doing it.Do you chaps change the elements or do you test what’s up then throw it over to a plumber?
If their is a high resistance joint somewhere in the supply the voltage tester won't read 230 at the element. If the voltage tester is reading 230 at the element and the water does, nt start to heat after 5 Mins ( usual "hissing" noise will be heard) that the element is gone. This can be confirmed with a resistance testIt could be a L or N connection failing in the Fused spur /FCU or in the consumer unit or elsewhere but making enough contact for a meter to read.
Clamping the supply to the heater is essential especially if you aren't going to wait around till it heats up and switches off.
Has it got a second switch somewhere?
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