Whirlpool Dishwasher F8 E1 Error Code: Troubleshooting... | appliancefaults.com

Technical Background:

The F8 E1 error code on a Whirlpool dishwasher indicates a water overfill condition. The Central Control Unit (CCU) monitors the water level through the flow meter and other sensors. If the CCU detects an overfill, it triggers the F8 E1 error. Voltage paths related to the inlet valve, drain pump, and flow meter are critical for proper water level control.

Symptoms:

The dishwasher displays the F8 E1 error code. The dishwasher may not fill with water, may overfill, or may not drain properly. The cycle may stop mid-operation.

Possible Causes:

Clogged or faulty water inlet valve
Defective flow meter
Issue with the drain pump or drain hose
Problem with the water hammer arrestor (air gap)
Faulty Central Control Unit (CCU)
Wiring harness issue

Solution:

1

Disconnect power to the dishwasher at the breaker panel. Verify 120V AC is not present at the dishwasher outlet with a multimeter.
2

Inspect the water inlet valve for clogs or damage. Check for 120V AC to the valve when the dishwasher is filling.
3

Examine the flow meter. Use a multimeter to check the continuity of the flow meter's windings. Consult the service manual for the correct resistance value.
4

Inspect the drain hose for kinks or obstructions. Check the drain pump for proper operation.
5

Check the water hammer arrestor for blockage or improper system.
6

If the above steps don't resolve the issue, replace the Central Control Unit (CCU).
7

After repairs, run a diagnostic cycle to ensure the F8 E1 error code is cleared.

Safety Warning:

Disconnect power to the dishwasher before performing any repairs. Use appropriate safety equipment, including insulated gloves and eye protection. High voltage is present in the dishwasher. Lock Out/Tag Out (LOTO) procedures are essential.

Prevention:

Periodically clean the dishwasher filter and inspect the drain hose for kinks. Ensure the water hammer arrestor is properly installed and free from obstructions. Use recommended dishwasher detergents.

Expert Tip:

You can often enter the diagnostic mode by pressing the following sequence of buttons within 6 seconds: High Temp Scrub > Heated Dry > High Temp Scrub > Heated Dry. This will allow you to run diagnostic tests and check the operation of various components.

Frequently Asked Questions

•What is the resistance range I should expect on the flow meter?

The resistance range for the flow meter can vary depending on the specific Whirlpool model. Refer to the technical service sheet for your model; however, a typical range is between 1500-2500 ohms.

•How do I access the water inlet valve for inspection?

The water inlet valve is usually located at the bottom-rear of the dishwasher. You'll typically need to remove the lower access panel and possibly the kick plate to gain access. Be sure to turn off the water supply before disconnecting the inlet valve.

•If the drain pump is running, but the dishwasher isn't draining, what else could be the problem?

If the drain pump is running but the dishwasher isn't draining, check for a clog in the drain hose, the air gap (if installed), or the connection to the garbage disposal (if applicable). Also, a worn or damaged impeller on the drain pump could cause insufficient pumping action.

Whirlpool Dishwasher F8 E1 Error Code: Troubleshooting and Repair Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the resistance range I should expect on the flow meter?

•How do I access the water inlet valve for inspection?

•If the drain pump is running, but the dishwasher isn't draining, what else could be the problem?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: