Sorry for the delay in replying, I only just came online and saw your question. Are you still looking for help with this?
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Do you know what temperature the fridge is reaching?
Does it get colder if you turn the thermostat colder?
Can you also check the model number please?
the fridge appears to working ok at the moment, i think the door had been left ajar all night. It did take quite a while to get back to normal