Kenmore freezer displays E9; interior lights and display may work but compressor does not run; unit stays warm.

Safety first: Unplug the freezer before removing any control covers. Electronic boards can retain charge briefly; avoid touching exposed circuitry.

Steps to address E9:

• 1. Power reset: Unplug the freezer for 5–10 minutes, then plug back in. If E9 returns immediately, continue.
• 2. Access control board: On many Kenmore freezers, the main control is behind the upper front control panel or rear service panel. Remove screws and carefully lower the housing.
• 3. Inspect visually: Look for burnt spots, swollen capacitors, or discolored components on the board. Check for loose or partially seated connectors.
• 4. Reseat connectors: One at a time, unplug and firmly reconnect each harness to the board to ensure good contact.
• 5. Check for 120V supply: If you are comfortable and qualified, verify that the board is receiving line voltage at its input. If not, the issue may be with the power cord or outlet.
• 6. Replace the board if damaged: If there is clear physical damage or E9 persists after reseating connectors, replace the main control board with a Kenmore-compatible part. Transfer any jumper plugs or settings as instructed in the service manual.
• 7. Reassemble and test: Reinstall covers, restore power, and confirm that E9 clears and the compressor and fans operate normally.

Note: If you are not experienced with electrical diagnostics, it is safer to have a technician confirm board failure before replacement.