Loss of supply alarm

DPG · Apr 8, 2016

I wouldn't hardwire it to an fcu. Makes it expensive when the fridge fails and they need to get a sparky in to disconnect it and reconnect the new one. Daz

UNG · Apr 8, 2016

You could use an RCD with an auxiliary contact which operates an alarm when tripped

Or if the freezer has an auto defrost function check the heater element is not on it's way out seen this cause problems many times in the past

Octopus · Apr 8, 2016

DPG said:
I wouldn't hardwire it to an fcu. Makes it expensive when the fridge fails and they need to get a sparky in to disconnect it and reconnect the new one. Daz

Really? How often does a fridge/freezer fail? Sounds like they have lost a couple of full freezer loads full already!

DPG · Apr 8, 2016

At some point the fridge will need replacing. Then they will need to get a sparky in to disconnect/re-connect. Better on a plug top. Daz

fall-apart-dave · Apr 11, 2016

It's easy, you just stick a relay like this: Schrack PT270T30 230V Relay With LED FD5C9 | eBay after the RCD, connect the normally open when energised side to this: https://www.tlc-direct.co.uk/Produc...owC6NhCe55twXc74aBtg-C9J3If9cm8JnyBoCd8rw_wcB , and feed mains to the input of that relay from before the RCD. RCD trips, contacts close, mains from before the RCD directed to the alarm. They will sharp know about it!!

Ok, maybe the bell is overkill, but you get my point. It's cheap and easy to do.