Get puddle of water from melting ice in front of Fridge. Apparently the unit doesn't start to cool following a defrost cycle.

I was getting the clicking of the relay for a couple of days. I go get a start relay. Then the clicking stops, and this not coming on following defrost starts. Is it the relay? Or is it something else and the Relay has turned out to be OK?

I unplug the unit and plug it back in and it start immediately, no clicking.

Thanks

Chris