LG ThinQ Dishwasher CE Motor Error Troubleshooting Guide... | digitalhomefaults.org

Technical Background:

The 'CE' error typically indicates a fault within the dishwasher's main wash motor circuit. This circuit involves the motor itself, the motor control board (inverter), wiring harness, and associated sensors (e.g., RPM sensor). Power is supplied via a standard 120V AC circuit, converted to DC for the motor. The ThinQ module communicates with the motor controller via a serial protocol. Signal integrity and power supply voltage are crucial.

Symptoms:

Dishwasher displays 'CE' error code on the front panel. The motor does not start, or starts intermittently, and the wash cycle is interrupted. The ThinQ app may show a 'Motor Fault' message and cycle termination.

Possible Causes:

Motor winding failure (open or short circuit).
Motor control board (inverter) failure due to component aging or voltage surge.
Wiring harness damage (rodent damage, corrosion, loose connections).
Blocked drain pump, causing excessive load on the wash motor during startup.
Faulty RPM sensor on the motor shaft.
Environmental factors: Low voltage supply during peak hours (especially during Canadian winter).

Solution:

1

Disconnect power to the dishwasher at the breaker panel (breaker lockout is mandatory). Verify zero voltage at the dishwasher power connection using a calibrated multimeter.
2

Inspect the wiring harness connecting the motor and the control board for any visible damage. Check connectors for corrosion and ensure they are firmly seated.
3

Remove the dishwasher's lower access panel and visually inspect the wash motor for any signs of physical damage or obstructions.
4

Disconnect the motor wiring harness and use a multimeter to test the motor winding resistance. Consult the LG service manual for the correct resistance values.
5

If the motor windings are within specification, inspect the motor control board for any burned or damaged components (e.g., capacitors, MOSFETs).
6

Check the drain pump for blockages. Remove any debris that may be obstructing the impeller. A blocked pump can over stress the wash motor circuit.
7

If all other components appear to be functioning correctly, the motor control board is likely faulty and needs to be replaced. Ensure replacement part is correct for the dishwasher model.

Safety Warning:

Always disconnect power before working on the dishwasher. Do not attempt to repair the motor control board yourself unless you are a qualified electronics technician. Ensure the dishwasher is properly grounded. Tampering with the appliance voids the warranty and poses a significant electrical shock hazard. Secure your ThinQ account with a strong password and enable two-factor authentication.

Prevention:

Regularly clean the dishwasher's filter to prevent blockages that can strain the motor. Inspect the spray arms for clogs. Run a dishwasher cleaning cycle with a suitable cleaner every month. Check for firmware updates via the ThinQ app and install them promptly. Ensure proper voltage at the dishwasher connection, especially during periods of high electrical demand (winter heating season).

Expert Tip:

Disconnect the power, then press and hold the 'Start' button for 30 seconds to perform a hard reset, clearing any residual error codes in volatile memory. This sometimes resolves transient faults after addressing the underlying issue. Check the voltage at the wall outlet under load using a multimeter to ensure adequate supply.

Frequently Asked Questions

•What does the CE error code mean on an LG dishwasher?

The CE error code on an LG dishwasher typically indicates a problem with the motor or motor control system. This could be due to a motor failure, wiring issues, or a problem with the control board.

•How do I reset my LG ThinQ dishwasher?

To reset your LG ThinQ dishwasher, disconnect the power supply at the breaker for a few minutes, then restore power. If that doesn't work, consult the user manual for specific reset instructions.

•Where can I find replacement parts for my LG dishwasher in Canada?

You can find replacement parts for your LG dishwasher at authorized LG parts dealers, appliance repair stores, or online retailers in Canada. Be sure to have your model number handy when ordering.

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

Frequently Asked Questions

•What does the CE error code mean on an LG dishwasher?

•How do I reset my LG ThinQ dishwasher?

•Where can I find replacement parts for my LG dishwasher in Canada?

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: