LG Dishwasher IE Error: Water Supply Valve Troubleshootin... | digitalhomefaults.org

Technical Background:

The LG dishwasher employs a solenoid-controlled water inlet valve to regulate water flow. The control board sends a 120VAC signal to energize the solenoid, opening the valve. A pressure sensor monitors water level. The IE error triggers when the control board does not detect sufficient water flow within a specified timeframe (typically 5-7 minutes). The dishwasher uses a flow meter to detect water intake.

Symptoms:

The LG Dishwasher displays the "IE" error code on the front panel LED display. The dishwasher fails to fill with water at the start of a cycle. No audible water intake is observed. App-side error log registers "Water Supply Error".

Possible Causes:

Water supply valve is fully or partially closed.
Kinked or blocked water supply hose.
Defective water inlet valve solenoid.
Faulty pressure sensor providing incorrect water level readings.
Clogged or restricted flow meter.
Low water pressure from the municipal water supply (common in older Toronto neighbourhoods).

Solution:

1

Verify the water supply valve is fully open. Check for kinks or obstructions in the water supply hose. Ensure the hose is properly connected to both the water supply and the dishwasher.
2

Test the water pressure at the supply valve using a pressure gauge. Minimum pressure should be 20 PSI. Low pressure may require plumbing adjustments.
3

Disconnect power to the dishwasher at the breaker (important safety step). Inspect the water inlet valve solenoid for continuity using a multimeter. A reading of infinite resistance indicates a faulty solenoid requiring replacement.
4

Examine the flow meter for debris or obstructions. Clean or replace the flow meter if necessary.
5

Inspect the pressure sensor and its wiring harness for damage or corrosion. Replace the sensor if faulty.
6

Check the dishwasher's filter screen where the water supply hose connects. Clean if clogged.
7

After completing repairs, run a test cycle to confirm the IE error is resolved and the dishwasher fills with water properly.

Safety Warning:

Always disconnect power to the dishwasher at the breaker before performing any repairs. Working with electrical components and water poses a risk of electric shock. Do not attempt repairs if you are not qualified. Ensure proper grounding of the appliance after repairs.

Prevention:

- Periodically inspect the water supply hose for kinks or damage. Replace the hose every 5 years. - Clean the dishwasher's filter screen monthly to prevent clogs. - Monitor water pressure in your home and address any low-pressure issues promptly. - Consider installing a water hammer arrestor to prevent pressure surges that can damage the water inlet valve.

Expert Tip:

Some LG dishwashers have a diagnostic mode accessible through a specific button sequence (consult the service manual). This mode can provide more detailed error information and component testing options. For Bell Giga Hub users, ensure the 2.4GHz Wi-Fi band is enabled for initial setup of the LG ThinQ app. Ensure firmware is up to date.

Frequently Asked Questions

•What is the typical lifespan of the water inlet valve on an LG dishwasher?

The lifespan of the water inlet valve is typically 5-7 years, depending on water quality and usage frequency.

•How can I test the water pressure in my home?

You can test water pressure using a pressure gauge attached to an outdoor faucet or a laundry machine connection. Most hardware stores sell inexpensive water pressure gauges.

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

You can usually find the service manual on the LG website by searching for your specific model number or by contacting LG customer support.

LG Dishwasher IE Error: Water Supply Valve Troubleshooting

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

Frequently Asked Questions

•What is the typical lifespan of the water inlet valve on an LG dishwasher?

•How can I test the water pressure in my home?

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

Related Questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: