Hi folks,

Fridge/freezer (Whirlpool ARZ 5290/H)

Recently some forgetful people have left the fridge door open on a regular basis and as of 2 days ago the fridge does not get very cold (down to 10 deg C?).
Its a dual compressor system with a frost-free fridge and the freezer works fine although it does need regular defrosting, due to poor seals.
It might be the compressor, relay, thermostat, defrost heater,defrost thermostat, no or low cooiling gas....?
I have read that a common fault on leaving the door open is for the evaporator to freeze over although the back wall does not feel cold, the base felt cooler, so why should I suspect ice there?
There is a fan that works fine but that just seems to circulate air around the fridge interior so I suspect the cooling is going on via heat transfer through the interior fridge walls.

Don't really want to have to switch off everything and de-frost for 48 hours as the freezer is full and has no home to go to.
Any ideas?
Cheers,

Daniel