I've just tested an AEG Santo fridge/freezer with a Primetest 250 on it's default settings. ie: 500v.
The isolation test failed with a reading of 0.06megohms. I repeated the test running off mains power and got the same reading.
I plugged the fridge back in and turned it on and it went bang and took out the consumer unit circuit breaker and RCCD.
I put it down to a faulty appliance but I'm suspicious as it should have taken out the consumer unit RCCD with that much leakage.
I'm wondering if it has an overvoltage/voltage surge protector that kicks in below 500v and once triggered stays triggered. I looked up the manufacturers user manual but it says nothing about this.
Has anyone had a similar experience or has some knowledge of AEG fridges, that could explain what happened?