LEC chest freezer keeps cutting out?

Compressor motor goes on for about a minute then cuts out, checked the thermostat and it still has continuity thro' it when the motor is off.

Think I traced it to what I thought was a thermostat unit which plugs onto three connections of the compressor...this 'clicks' on and off. This may be called a motor protector relay?..not sure.

It's model number: F715AW
Serial number: 601V00063

Problem is, I can't locate this model number on any website

Anyone with any ideas?

Cheers!