Freezer displays E10; unit may not start cooling or may shut down shortly after starting.

Safety: This fault involves high-voltage and high-current components. Unplug the freezer before any inspection. Do not attempt sealed system repairs without proper training and tools.

• Listen for compressor: When powered, note if the compressor attempts to start (clicking or brief hum) or remains silent.
• Access compressor area: Remove the rear lower access panel to expose the compressor and inverter (if equipped).
• Check connections: Inspect the harness between the main control and inverter, and between inverter and compressor. Reseat connectors firmly.
• Visual inspection: Look for burn marks or bulging components on the inverter module.
• Basic compressor test: With power off and inverter disconnected, measure resistance between compressor terminals. Extremely high or zero readings may indicate a failed compressor.

Because E10 often indicates an inverter or compressor issue, full diagnosis typically requires a professional with Monogram service documentation and sealed system certification. Do not attempt to open the sealed system yourself.