I have a Lg double door fridge with water and ice dispenser at front. Lights go out and won't work until I unplug fridge
You mean unplug and replug, yes?
It sounds like something is being reset. This should reset on its own if the door is left closed for a while.
Some frigs have a timer on the light so that if the door is left slightly open the light which gives off enough heat to defrost the frig or freezer will shut off after a time. Make sure the door is closing and that the seal is holding. A large door can sometimes shift on the hinge and go out of alignment. Measure the projection of the edge of the door from the face of the frig box. It will be a few inches (thickness of the door plus rubber seal to the frig box). This measurement should be the same all around the door. If it is not close to the same the door has shifted. If you are handy figure out which hinge has moved, loosen the screws, adjust and retighten. If you are not so handy, this could make things worse real fast. It is like adjusting cupboard doors in that you make the top right corner go in by pulling the bottom left corner out, for example.
The switch can easily be tested by pushing on the switch when the door is open. If you have one switch per door, it turns the light on and the fan off when the door opens. If you have two switches per door, one turns the light on and the other turns the fan off.
While the frig has your attention, pull the grill off and very carefully vacuum the dust off the radiator looking thing and all around. Wait for the evaporaror fan to stop running! This will greatly improve the efficience and lengthen the life of your frig. Your instruction manual will actually tell you to do this... If you have a dusty house do this every couple of months. I've got a pair of subzeros that are now 27 years old. I just had one of the doors shift and ice was forming on the back wall inside.
on Dec 22, 2018