LG Smart Dishwasher FE Error: Overfilling Troubleshooting... | digitalhomefaults.org

Technical Background:

The LG Smart Dishwasher uses a pressure sensor and float switch to monitor water levels. The main control board (MCU) interprets signals from these sensors to regulate the water inlet valve and drain pump. Wi-Fi connectivity allows for remote monitoring and firmware updates. Failure in any of these components or their communication pathways can trigger the FE error.

Symptoms:

The LG Smart Dishwasher displays an "FE" error code on the control panel. Audible overfilling is detected, with possible water leakage from the door seals or drain. Error logs in the LG ThinQ app indicate "Water Level Exceeded Threshold".

Possible Causes:

Faulty water inlet valve not closing completely.
Malfunctioning pressure sensor providing incorrect water level readings.
Clogged drain line or drain pump failure preventing proper drainage.
Defective float switch stuck in the "up" position.
Software glitch in the main control board (MCU).
Water supply pressure exceeding the dishwasher's operating range (verify against your Canadian municipality's water pressure).

Solution:

1

*Safety First**: Turn off the dishwasher's breaker at the electrical panel. Locate the breaker (typically 15A or 20A) and switch it to the OFF position.
2

Inspect the water inlet valve. Disconnect the water supply line (ensure the main water supply is shut off first). Check for debris or corrosion. Use a multimeter to test the valve's solenoid for continuity (should read between 1-3 kOhms). Replace if faulty.
3

Examine the pressure sensor. Locate the sensor (typically at the bottom of the wash tub). Disconnect it and inspect for damage. Use a multimeter to check the sensor's resistance at different water levels (consult the service manual for expected values). Replace if readings are inaccurate.
4

Check the drain line and pump. Disconnect the drain hose from the garbage disposal or sink drain. Inspect for clogs. Remove and test the drain pump motor for proper operation. Replace if necessary.
5

Inspect the float switch. Ensure the float moves freely. Test the switch with a multimeter to confirm it opens and closes correctly as the float moves. Replace if faulty.
6

Power cycle the dishwasher. After addressing potential hardware issues, restore power to the dishwasher. Run a diagnostic cycle (consult the service manual for the procedure). Observe if the FE error reappears.
7

Update Firmware via ThinQ App: Ensure the dishwasher's firmware is up to date via the LG ThinQ app. Network stability is key; optimize Wi-Fi signal using a Wi-Fi analyzer app and consider assigning a static IP address to the dishwasher on your Bell Giga Hub or Rogers Ignite router.

Safety Warning:

Disconnect power to the dishwasher before performing any repairs. Water and electricity can be a dangerous combination. Improper repairs can lead to electrical shock, water damage, or fire. Always consult a qualified appliance repair technician if you are uncomfortable performing any of these steps. Protect your smart home network with strong passwords and two-factor authentication to prevent unauthorized access and tampering.

Prevention:

- Regularly clean the dishwasher's filter and spray arms to prevent clogs. - Inspect the drain hose for kinks or damage. - Periodically run a dishwasher cleaner to remove mineral buildup. - Monitor water pressure and install a pressure regulator if necessary. - Schedule routine firmware updates via the LG ThinQ app.

Expert Tip:

Perform a "hard reset" by holding the "Rinse" and "Power" buttons simultaneously for 5 seconds. This clears the error log and resets the control board to its default settings, sometimes resolving transient software glitches. If using a Bell Giga Hub, prioritize 2.4GHz band for reliable IoT device connections.

Frequently Asked Questions

•What is the typical water pressure range for an LG Smart Dishwasher in a Canadian home?

The water pressure range is typically 20-120 PSI. Consult your local municipality's water pressure guidelines.

•How often should I run a dishwasher cleaner?

Run a dishwasher cleaner every 1-3 months, depending on water hardness and usage.

•Where can I find the service manual for my LG Smart Dishwasher model?

The service manual can usually be found on the LG website or through authorized service providers. Search using the full model number.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

Frequently Asked Questions

•What is the typical water pressure range for an LG Smart Dishwasher in a Canadian home?

•How often should I run a dishwasher cleaner?

•Where can I find the service manual for my LG Smart Dishwasher model?

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: