Kitchenaid Refrigerator KSSS48MHT00 Won't start or doesn't start

This PTC start relay mounts on the compressor and momentarily powers the start winding to get the motor running, then disengages for normal operation. Replacing a weak relay can stop repeated clicking and help restore cooling.

• Provides initial boost to the compressor's start winding for reliable startup
• Automatically drops out after startup so the compressor runs on the run winding
• Helps address symptoms like warm temperatures, compressor clicking or humming without starting, or frequent overload trips
• Failure may show as rattling, burn marks, or a melted relay housing

• Disconnect power and remove the rear access panel to reach the compressor
• Allow components to cool; note wire locations and take a reference photo
• Pull the old relay straight off the compressor pins; align and firmly seat the new relay in the same orientation, then reconnect wires
• If your unit uses a run capacitor and/or separate overload protector, reconnect per the wiring diagram before restoring power

This Power Disconnect Switch is the refrigerator's on/off service switch. It interrupts incoming power when actuated, allowing safe servicing or resetting of the unit without unplugging it and helping prevent unintended operation when access panels are open. What it does:

• Interrupts electrical power to the unit when switched off or tripped
• Provides a dedicated service disconnect for safe maintenance and resets
• Common symptoms: no power, intermittent shutdowns, or the unit won't stay on unless the switch is held/positioned
• Visual clues: broken actuator or heat-discolored/loose terminals

• Power disconnect switch only

• Disconnect power at the breaker before servicing
• Access the switch location; on many built-in units it's behind the top grille or control panel
• Move wires one at a time to the new switch to maintain correct orientation
• Restore power and verify the switch cleanly turns the unit on and off