Periodic tripping of earth leakage switch.

Thanks, but this is in Australia and earth leakage units are the norm. However, I think I have solved the problem - maybe! There is a damaged door seal and there was ice formlng around the earthed/electrical area within the cavity of the freezing/defrost area. Have decided to renew the seal, and apply insulation foam to both door cavities and see what transpires. I am in awe that in this mellenium manufacturers still don't apply insulation to the cavities of their fridge/freezer doors!