Whirlpool Dishwasher F8 E1 Error Code: Flow Meter Sensor... | appliancefaults.com

Technical Background:

The F8 E1 error code on a Whirlpool dishwasher typically indicates a problem with the water flow rate. The dishwasher's main control unit (MCU) monitors the flow meter sensor to determine if the proper amount of water is entering the machine within a specific time frame. The flow meter sends a signal to the MCU. If the MCU detects a low or no flow condition, it triggers the F8 E1 error. This could be due to a failing flow meter, blockage, or a problem with the control board itself. Voltage paths are typically 5V DC from the CCU to the flow meter and back.

Symptoms:

The dishwasher displays an F8 E1 error code and may not fill with water correctly, or it may take an unusually long time to fill. The wash cycle might be interrupted, or the dishwasher might not start at all. The homeowner might also notice unusual noises or error lights.

Possible Causes:

Blocked or restricted water inlet valve.
Faulty flow meter sensor.
Wiring harness damage between the flow meter and the control board.
Issues with the central control unit (CCU).
Low water pressure to the dishwasher.
Debris in the sump filter restricting water flow.

Solution:

1

Turn off power to the dishwasher at the breaker panel.
2

Inspect the water inlet valve for blockages or restrictions. Clean or replace if necessary.
3

Locate the flow meter, usually found in the base of the dishwasher near the sump. Disconnect the wiring harness.
4

Use a multimeter to test the flow meter sensor for continuity and resistance. Compare readings to the service manual specifications. A typical range is 1-2k ohms, but refer to your specific model's documentation.
5

Inspect the wiring harness for any damage, corrosion, or loose connections. Repair or replace as needed.
6

If the flow meter and wiring appear to be good, the CCU might be faulty. This may require licensed technician diagnosis and replacement. Check for 5V DC at the flow meter connector coming from the CCU with your multimeter.
7

After repairs, restore power and run a test cycle to confirm the error is resolved.

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 energizing of the circuit. Be aware of high voltage (120V AC) components when working on the appliance.

Prevention:

Regularly clean the dishwasher's filters and check the water inlet valve for any debris buildup. Ensure adequate water pressure to the dishwasher. Use a water softener if your water is hard to prevent mineral buildup in the water inlet valve and flow meter.

Expert Tip:

Some Whirlpool dishwashers have a service mode that can be used to diagnose problems. To access the service mode, try pressing the following sequence of buttons within 6 seconds: High Temp Wash -> Heated Dry -> High Temp Wash -> Heated Dry. The diagnostic cycle can provide more specific error information.

Frequently Asked Questions

•What is the correct resistance reading for the flow meter on my specific Whirlpool dishwasher model?

The correct resistance reading can vary depending on the specific model. Refer to the service manual or technical sheet for your dishwasher model. Look for the flow meter sensor specifications in the electrical component testing section.

•How do I check the water pressure going to my dishwasher?

You can use a water pressure gauge connected to the water inlet valve connection. A typical dishwasher requires a water pressure of 20-120 PSI. If the pressure is too low, investigate plumbing issues or a faulty house regulator.

•Where can I find the service manual for my Whirlpool dishwasher?

You can usually find the service manual online by searching with your dishwasher's model number followed by 'service manual'. Whirlpool's website or appliance parts retailers may also have them available for download or purchase.

Whirlpool Dishwasher F8 E1 Error Code: Flow Meter Sensor Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct resistance reading for the flow meter on my specific Whirlpool dishwasher model?

•How do I check the water pressure going to my dishwasher?

•Where can I find the service manual for my Whirlpool dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: