Kenmore Dishwasher Error Code F7E2

The F7E2 error code on a Kenmore dishwasher indicates that the heater circuit is stuck in the on position. Under normal operation, the control board activates and deactivates the heating element in precise cycles to manage water temperature during wash and dry phases. When the control detects that the heater drive circuit cannot be switched off as commanded, it logs this fault to prevent the element from running continuously, which could cause overheating, steam damage, or fire risk.

The fault originates within the heater drive circuit on the control board itself. This circuit typically uses a relay or triac to switch power to the heating element. If the relay contacts weld together due to excess current or heat, or if the triac fails in a shorted state, the heater receives continuous power regardless of control commands. The board cannot correct this condition through software alone, which is why the error triggers immediately and requires a hardware fix.

Because the fault is attributed to the control board's drive circuit, the primary resolution is control board replacement after disconnecting power. Before installing a new board, the heating element and all associated wiring harness connections should be physically inspected for signs of overheating, melted insulation, or carbon tracking. A shorted heater element can cause repeated failure of the drive circuit on a replacement board if the root cause is not addressed first.