Unit displays E3 and shuts down or fails to complete ice harvest cycle.

Safety First: Disconnect power before removing panels. Refrigeration system work involves high pressure and should be done by a licensed technician.

• Clean condenser: Remove the lower front grille and use a soft brush and vacuum to clean dust and lint from the condenser coil. A dirty condenser can cause improper freeze times.
• Check airflow: Ensure the unit has proper clearance around the front and sides as specified in the Monogram installation guide. Poor ventilation can cause high operating temperatures.
• Inspect evaporator frost pattern: With power restored and panels removed, observe the evaporator during a freeze cycle (only if you are comfortable and safe doing so). An uneven frost pattern may indicate a sealed system issue.
• Verify thermistor connections: Check the evaporator thermistor wiring and connector at the control board.
• Call a professional: If cleaning and basic checks do not clear E3, a sealed system or compressor issue is likely. Contact a qualified Monogram service technician for refrigerant and compressor diagnostics.