My Whirlpool ARC7472 fridge freezer has stopped cooling both feezer and fridge. Removal of the cover in the freezer shows no ice build up, the fan runs, but no cooling effect in the chiller pipework to the evaporator. There appears to be liquid running through the piping as you can hear it 'gurgling'in the freezer - the compressor seems to be running hard and hot. Is this the thermostat faulty, or lack of refridgerant? How do I check for refridgerant loss? Thanks for any help you can give.
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