I have the same model, with the same fault.
It's not blocked with ice (although there is a buildup on the fridge back panel).
How do we tell if there is a shortage of gas or a faulty fan?
Temp. reading on mine as I type is +7 fridge (stat is set at +4) and -11 freezer (stat set at -21).
Approx. 4 years old, is it d-i-y- repairable, or an engineer call-out job, or just better to replace it?
IAN.M., June 2010