Timer counts down but heating does not start until door is opened and closed again.

Safety first: Unplug the smoker before adjusting the door switch.

• Inspect switch action: Manually press the door switch plunger and listen for a crisp click. If it feels mushy, replace the switch.
• Adjust door alignment: Ensure the door fully depresses the switch when closed by adjusting hinges or latch.
• Clean area: Remove grease or debris around the switch that may prevent full travel.
• Replace switch: If intermittent behavior continues, install a new Cuisinart door switch.