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I've had a problem with my immersion heater and I've traced back to the switch. I'm getting strange voltage readings on the supply side (around 164v). I've tested my multimeter on a known good socket and I'm getting a reading of around 216V. If I test the bare supply wires to the switch I...

Woke up this morning to no hot water. Tried the boost button on our control panel and it wouldn't switch on (no click and no little red light). So far I've checked the MCB and fuse behind the immersion heater, both were fine. So I'm thinking we probably have a burnt heater element. This is...