Whirlpool Dishwasher Error Code F7 E1: Heating Element... | appliancefaults.com

Technical Background:

The dishwasher's main control unit (MCU) monitors the heating element circuit. The MCU sends a voltage (typically 120V AC) to the heating element through a relay on the control board. A sensor on the control board monitors the current flow through the heating element. If the MCU detects an open circuit (no current flow) when the heating element is supposed to be energized, it generates the F7 E1 error code.

Symptoms:

US homeowners commonly report that their Whirlpool dishwasher is not heating the water properly. Dishes are not drying completely, and food residue remains after the wash cycle. The dishwasher displays an F7 E1 error code on the control panel.

Possible Causes:

Open heating element
Faulty heating element relay on the control board
Wiring harness issue between the control board and heating element
Thermostat failure (though less common, can trigger the code)
Loose connection at the heating element terminals
Damaged or corroded wire terminals

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Use a multimeter to verify no voltage is present at the dishwasher's junction box.
2

Locate the heating element at the bottom of the dishwasher tub. It is usually a U-shaped metal component.
3

Disconnect the wires from the heating element terminals. Use a 1/4-inch nut driver or appropriate screwdriver.
4

Set your multimeter to the ohms setting (resistance). Test the heating element for continuity. A good heating element will typically read between 10-30 ohms. An open circuit (infinite resistance) indicates a failed heating element.
5

If the heating element is open, replace it with a new heating element. Ensure the new element is the correct part for your Whirlpool model.
6

If the heating element tests good, inspect the wiring harness between the control board and the heating element for any breaks, shorts, or loose connections. Use a multimeter to check continuity of each wire. Repair any wiring issues.
7

If the wiring is good, the issue is likely the heating element relay on the control board. Replacing the control board is generally necessary in this case.

Safety Warning:

Always disconnect power to the dishwasher at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental re-energizing of the circuit. High voltage (120V AC) is present in the dishwasher's electrical components.

Prevention:

• Regularly clean the dishwasher's filter to prevent debris from accumulating and potentially damaging the heating element.
• Avoid overloading the dishwasher, as this can restrict water flow and affect heating performance.
• Use a dishwasher detergent that is specifically designed for hard water conditions, if applicable.

Expert Tip:

Some Whirlpool dishwashers have a service mode. To access it, press the following sequence within 6 seconds: High Temp Wash -> Heated Dry -> High Temp Wash -> Heated Dry. This may allow you to run diagnostic tests on the heating element circuit.

Follow-up Questions:

Frequently Asked Questions

•How do I know if the heating element is the correct replacement part?

Check the part number listed in your dishwasher's user manual or on a parts website using your model number. The replacement element must be rated for the correct voltage (typically 120V AC) and wattage.

•Is it possible to repair the heating element instead of replacing it?

No, typically heating elements are sealed units and cannot be repaired. If the element is open or damaged, it needs to be replaced entirely.

•What if the dishwasher continues to display the F7 E1 error code after replacing the heating element and control board?

Double-check all wiring connections, especially at the heating element terminals and the control board. A loose or corroded connection can still cause the error. If the problem persists, there may be an issue with the water inlet valve or a blockage in the water supply line, preventing proper water levels and affecting the heating cycle.

Whirlpool Dishwasher Error Code F7 E1: Heating Element Open Circuit Repair

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I know if the heating element is the correct replacement part?

•Is it possible to repair the heating element instead of replacing it?

•What if the dishwasher continues to display the F7 E1 error code after replacing the heating element and control board?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: