Dishwasher displays F7E1 and dishes are not drying; heater does not energize.

Safety first: Turn off power at the breaker.

• Check for visible damage: Inspect the exposed heating element inside the tub for breaks or burn marks.
• Test element continuity: Access the heater terminals from below, disconnect wires, and measure resistance. Infinite resistance indicates a failed element.
• Test high-limit thermostat: Locate the thermostat and check for continuity. If open, it may have tripped due to overheating.
• Inspect wiring and board: Look for burnt connectors or a damaged heater relay on the control board.

Repair action: Replace the heating element or high-limit thermostat as needed. If both test good, replace the main control board due to a failed heater relay or logic fault.