Display shows F4, compressor may not run, or unit may shut down unexpectedly.

Safety first: Unplug the freezer and allow the compressor area to cool before touching components.

• Step 1 – Check ventilation: Ensure there is adequate clearance around the freezer and that the condenser coils are clean to prevent overheating.
• Step 2 – Inspect overload device: Access the compressor compartment and check the overload protector mounted on the compressor. Look for discoloration or a burnt smell.
• Step 3 – Allow cool-down: If the compressor is very hot, leave the unit unplugged for 30–60 minutes, then restore power and see if it starts.
• Step 4 – Replace overload (common fix): If the overload is weak or open, replace it with the correct JennAir part.
• Step 5 – If F4 persists: A seized compressor or serious electrical issue may be present. This requires professional sealed system service.