Thanks for the help Drew,

I put the fridge through its diagnostics and it did everything it was asked of. I can only assume something has gone wrong with the defrost initiation in the control board.

I installed the new board a few days ago and I will be returning to see if it has been going on defrost...Fingers crossed!

Another strange thing about this fridge was that it had a new compressor installed in it's short history, something the customer has no idea about even though she has full service history from electrolux...hmmm could be a friday fridge.