Jackson dishwasher displays E14 indicating a door temperature probe or tank temperature sensor error (open or short).

Safety first: Disconnect power before accessing sensors or control boards.

• Locate the sensor: Identify the tank or door-mounted temperature probe referenced by the error. It is typically a small stainless or brass probe with two wires.
• Inspect wiring and connectors: Check for broken wires, chafing, or loose connectors between the sensor and control board. Repair or replace damaged wiring.
• Test sensor resistance: Remove the sensor and measure resistance at room temperature. Compare to Jackson’s specification chart. An infinite or near-zero reading indicates a failed sensor.
• Check for moisture intrusion: Inspect the sensor body and connector for water ingress or corrosion. Replace if contaminated.
• Clear error after replacement: Install the new sensor, reconnect wiring, and power up the machine. Clear the error code per the service manual and verify accurate temperature readings.

Do not bypass temperature sensors; they are critical for safe sanitizing and over-temperature protection.