LG Dishwasher Error Codes and Troubleshooting Steps

: June 17, 2024
: LG

Table of Contents

No.	Error	Symptom	Cause
1	Inlet Error	IE	Doesn’t reach the normal water level
2	Drain Error	DE	Doesn’t reach the normal water level
3	Leakage Error	AE	Internal leakage
4	Bubble Error	bE	Oversudsing caused by improper detergent
5	Excess Error	FE	Water fills above normal level (automatically drain pump

For troubleshooting each LG Dishwasher Error Code, let’s break down the steps based on the cause and symptom provided for each error. This will help in identifying the root cause and addressing the issue effectively.

1. Inlet Error (IE)

Symptom: Doesn’t reach the normal water level.

Troubleshooting Steps:

Ensure the water supply valve is fully open and check for kinks or bends in the water inlet hose.
Check the water inlet filter for any blockages or debris and clean it if necessary.
Verify that the water pressure is within the normal range for the dishwasher.

2. Drain Error (DE)

Symptom: Doesn’t drain to the normal water level.

Troubleshooting Steps:

Check the drain hose for kinks or clogs and remove any obstructions found.
Clean the dishwasher’s filter and drain area to ensure there are no blockages.
Ensure the drain hose is mounted at the correct height according to the dishwasher’s installation manual.

3. Leakage Error (AE)

Symptom: Internal leakage.

Troubleshooting Steps:

Inspect the dishwasher for any visible leaks and identify the source (e.g., door seal, hose connections).
Check the seals and gaskets for wear or damage and replace them if necessary.
Ensure the dishwasher is level to prevent water from leaking out.

4. Bubble Error (bE)

Symptom: Oversudsing caused by improper detergent.

Troubleshooting Steps:

Verify that the detergent used is suitable for dishwashers and not causing excessive suds.
Reduce the amount of detergent if oversudsing persists.
Perform a rinse cycle without detergent to remove excess suds.

5. Excess Error (FE)

Symptom: Water fills above the normal level (automatic drain pump operated).

Troubleshooting Steps:

Inspect the water inlet valve for malfunction or stuck open and replace if necessary.
Check the float switch for proper operation and ensure it is not stuck in the down position.
Examine the pressure switch and its hose for blockages or damage.

6. Thermal Error (tE)

Symptom: Thermistor resistance output abnormal.

Troubleshooting Steps:

Check the thermistor for proper connection and test for resistance. Replace if out of specification.
Inspect the wiring harness for damage or loose connections.
Ensure the heating element is functioning correctly and replace if faulty.

7. Heater Error (HE)

Symptom: The water is not heated or the temperature in the tub is overheated to 194°F.

Troubleshooting Steps:

Verify the heating element is operational and replace if defective.
Check the thermostat for proper operation and replace if faulty.
Inspect the wiring to the heater and thermostat for damage or loose connections.

8. Motor Error (LE)

Symptom: The motor is working abnormally.

Troubleshooting Steps:

Inspect the motor for any visible signs of damage or wear and replace if necessary.
Check the wiring connections to the motor for looseness or damage.
Test the motor’s windings for continuity and replace the motor if it fails the test.

9. Vario Error (nE)

Symptom: The position of the vario cam is not properly set.

Troubleshooting Steps:

Check the vario motor for proper operation and ensure it is correctly positioned.
Inspect the vario cam for damage or improper installation and adjust or replace as needed.
Verify the wiring to the vario motor for any damage or loose connections.

FAQ

Q1: How can I test the dishwasher’s water pressure to ensure it’s within the normal range for inlet-related issues?

A1: Testing the water pressure for your dishwasher involves a few steps and might require a water pressure gauge, which is an affordable tool available at most hardware stores. Here’s how you can do it:

Locate the Water Supply Valve: This is usually found under the sink or where the water line enters the dishwasher.
Attach the Pressure Gauge: Screw the pressure gauge onto the water supply valve or a faucet near the dishwasher. Make sure it’s the same line supplying water to your dishwasher.
Turn on the Water: With the gauge securely attached, turn on the water supply to get a reading. Ensure the dishwasher or any other appliance using the same line is not running.
Read the Pressure: Water pressure is measured in pounds per square inch (PSI). Dishwashers typically require a water pressure between 20 and 120 PSI for optimal operation. If the reading is outside this range, you might experience issues with water filling or draining.
Adjust as Necessary: If the water pressure is too high, installing a pressure reducing valve can help. If it’s too low, checking for clogs, kinks in the line, or consulting a plumber might be necessary.

Q2: What are the specifications for a dishwasher-safe detergent to prevent oversudsing errors?

A2: Dishwasher-safe detergents are formulated specifically to be low- sudsing and efficient at cleaning with the mechanics of a dishwasher. Here are some specifications to look for:

Low-Sudsing Formula: Unlike regular dish soap, dishwasher detergents are designed to create minimal suds. Excess suds can interfere with the dishwasher’s ability to clean effectively.
Enzyme-Based Ingredients: Many dishwasher detergents contain enzymes that break down food particles and stains at lower temperatures, improving energy efficiency.
Phosphate-Free: While phosphates can enhance cleaning, they have been phased out of many detergents due to environmental concerns. Look for phosphate-free formulas.
Chlorine-Free: Some detergents use chlorine bleach for whitening and sanitizing, but if you’re concerned about chemical use, there are chlorine-free options that use oxygen-based bleachers instead.
Form Factor: Detergents come in powders, liquids, and pods/tablets. Pods or tablets often include rinse aids and other additives for a comprehensive clean.

Q3: How can I determine if the heating element in my dishwasher needs replacement for thermal or heater errors?

A3: Diagnosing a faulty heating element involves a few steps and might require a multimeter to test for electrical continuity. Here’s a straightforward way to determine if your heating element needs replacement:

Disconnect Power: Before doing any checks, ensure the dishwasher is unplugged or the circuit breaker is off to avoid electrical shock.
Locate the Heating Element: This is typically found at the bottom of the dishwasher tub. You might need to remove the bottom rack for better access.
Visual Inspection: First, check for any visible signs of damage such as cracks or breaks in the element. If any damage is visible, the element needs replacement.
Test for Continuity: Using a multimeter set to the ohms (Ω) setting, test the heating element for continuity by placing each probe on the element’s terminals. A reading that shows some resistance indicates the element is good; no reading means the element is faulty and needs replacement.
Check for Additional Faults: Even if the element has continuity, issues with the thermostat or control board can prevent heating. If the element is fine, these components may need to be checked as well.