LG Dishwasher IE Error Code: Solenoid Valve Resistance... | appliancefaults.com

Technical Background:

The IE error code indicates a problem with the dishwasher's water inlet system. The main control unit (MCU) monitors the water level sensor and activates the water inlet valve (solenoid) to allow water to enter the dishwasher. If the MCU doesn't detect the correct water level within a specific timeframe, it triggers the IE error code. The MCU sends 120V AC to the solenoid valve.

Symptoms:

The dishwasher displays the IE error code and fails to fill with water. You may hear a humming sound but no water entering the unit.

Possible Causes:

Clogged or kinked water inlet hose.
Defective water inlet valve (solenoid).
Low water pressure to the dishwasher.
Faulty wiring or connections in the water inlet valve circuit.
Malfunctioning main control board (MCU).

Solution:

1

Turn off the dishwasher's breaker at the breaker panel.
2

Disconnect the water supply line from the inlet valve. Check for proper water pressure (20-120 PSI). Clean the inlet screen.
3

Locate the water inlet valve. Disconnect the wires from the valve solenoid.
4

Using a multimeter, check the resistance across the solenoid terminals. A typical reading should be between 500 ohms and 1500 ohms. An open or shorted reading indicates a faulty valve.
5

Inspect the wiring harness and connectors leading to the inlet valve for damage or corrosion. Repair or replace as needed.
6

If the wiring and valve are good, suspect a faulty main control board (MCU). Replacement may be required.
7

Reconnect all components, turn the breaker back on, and test the dishwasher.

Safety Warning:

Always disconnect power to the dishwasher before performing any repairs. Lockout/Tagout (LOTO) procedures must be followed to prevent accidental electrocution. Be careful when working with 120V AC electrical components.

Prevention:

Regularly check and clean the water inlet hose and screen. Ensure adequate water pressure to the dishwasher. Use a high-quality dishwasher detergent.

Expert Tip:

Some LG dishwashers have a diagnostic mode. You can usually access it by pressing a specific combination of buttons (e.g., 'Rinse' + 'High Temp' simultaneously) for a few seconds. This can provide more detailed error information.

Frequently Asked Questions

•What is the correct water pressure I should see at the inlet valve?

The water pressure should be between 20 and 120 PSI. Use a pressure gauge at the inlet valve connection.

•How do I test the voltage going to the water inlet valve?

Set your multimeter to AC voltage. With the dishwasher attempting to fill, carefully place the probes on the terminals of the inlet valve connector. You should read approximately 120V AC.

•Where is the water inlet valve located in my LG dishwasher?

The water inlet valve is typically located at the bottom of the dishwasher, usually on the left or right side when facing the front. It's where the water supply line connects.

LG Dishwasher IE Error Code: Solenoid Valve Resistance Check

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What is the correct water pressure I should see at the inlet valve?

•How do I test the voltage going to the water inlet valve?

•Where is the water inlet valve located in my LG dishwasher?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: