Unit has power but stopped cooling

I have a whirlpool refrigerator stop just stopped cooling and when i open the door the inside lights don’t come on. But the front panel for the ice/water maker have power. i heard a clicking sound in the bottom of the unit, i opened the back and found that the 3 way coil relay was making the sound. I unplugged that unit and plug it back in and the unit started to work again. I am just not sure if this part might be going bad or if resetting this part reset some other thing that its connected to. Any help would be greatly appreciated.