Original post by: mayer ,
'''1 – Micro Switch On Dispenser Lever Faulty''' The micro switch that controls dispensing can crack, fall off the frame, or become faulty (no continuity). – Test with meter for continuity ''(be sure to press the switch when checking for continuity)''. – Check to see if it fell off the frame and it is not in the correct position. – Inspect to see if switch is cracked or burnt. Replace the Micro Switch On Dispenser Lever if faulty. '''2 – Refrigerator Door Switch Faulty''' The door switch “closes” when the refrigerator door is shut, it can crack or become faulty (no continuity). – Check to see if switch is cracked or burnt. – Test with meter for continuity ''(be sure to press the switch when checking for continuity)''. – Inspect to see if it fell off the frame and not in the proper position. Replace the Refrigerator Door Switch if found to be not working as designed. '''3 – Dispenser Control Board Faulty''' The dispenser control board controls the water and ice and the display, it can become faulty over time. – Check for any burns on the circuit board. – Inspect the board for signs of a short such as a popped capacitor or other issue. Replace the Dispenser Control Board if found to be the issue. '''4 – Water Inlet Valve Faulty''' The water inlet valve supplies water to the refrigerator and can be faulty either mechanically or electrically. – Test solenoid valve coils with meter for continuity. – Check if the valve is clogged, if so remove clog and inspect valve for other issues. Replace the Water Inlet Valve if found to be not in working order. '''5 – Internal Wiring Issues''' The wiring and wiring harnesses within the refrigerator may have an issue. – Check in the refrigerator for disconnected wire harnesses. – Inspect for loose wiring within the fridge and reconnect if found. – Look for any sign of faulty wiring by looking for burned or cut wire harnesses. Replace any wiring that you find to be faulty or damaged. '''6 – Low Water Pressure''' Water pressure going to a refrigerator must be 20 PSi minimum. – Check the water line to see if the water coming from the wall has proper pressure. – Inspect the water supply valve to be sure it is not clogged or has low pressure. Fix any water supply issues to solve any problems with the refrigerator.