The freezer works fine but the temp in the fridge is to hot.
Advised customer to switch off for 2 days when it was switched back on freezer seems fine, temperature in fridge drops down and then in less than 20mins starts to get warm.
Couple of things to check, that motorized flap is opening o.k & theres no blockage in duct from freezer to fridge, that fan is turning o.k, (i’ve had a few that turned o.k but were not as fast as they should be). Check door sw’ in freezer is working o.k also.