LEC Larder Fridge (2 years old) seems to have stopped responding to thermostat, stays on and contents freeze.
Replaced with new thermostat but fault remains.
if stat has been changed and is the CORRECT one that has been fitted you would have to suspect the system gas or compressor being at fault.the only other thing that can be an issue is auto defrosting fridge freezers and failing of the auto defrost components.not easy to diagnose as you need test equipment to confirm fault
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Try fixfault.com to fix freezers.