The LG dishwasher E1 or EI error code indicates a leak has been detected by the float switch. This guide provides a comprehensive troubleshooting process to help you identify and resolve the issue.
LG dishwasher E1 or EI error code: Understanding the Float Switch
The float switch is a safety mechanism designed to detect excess water in the dishwasher’s base. When water accumulates, the float rises, activating the switch and triggering the E1/EI error code, which usually halts the wash cycle.
Troubleshooting Steps for the LG dishwasher E1 or EI error code
1. Check for Proper Installation and Leveling:
- Leveling: Ensure the dishwasher is perfectly level, both side-to-side and front-to-back. Even a slight tilt (as little as 5°) can cause water to pool and activate the float switch. Use a level to verify.
- Mounting and Clearances: Confirm the mounting brackets are secure and the cabinet clearances are correct. Tight spaces can cause the dishwasher’s tank to twist, leading to leaks.
2. Inspect Tank Bushings:
- Locate the bushings at the bottom front corners of the dishwasher tank. Verify they are present and securely in place.
- If the bushings have fallen out, apply a small amount of food-grade silicone to the back of the bushing before reinstallation to prevent future dislodging.
3. Check the Water Inlet Valve:
- Start a wash cycle and observe if the water inlet valve stays on continuously.
- If the valve remains open, determine if the issue is electrical (constant voltage supply) or mechanical (the valve sticking open).
- If the valve is sticking, check for calcium buildup on the valve screen. If present, consider installing a water filtration system to prevent future buildup.
4. Inspect Door Gaskets (Inner and Outer):
- Lower Door Gasket (Outer): Examine the gasket along the bottom edge of the outer door for deformities, tears, or debris (food, grease). Clean the gasket and the corresponding area on the tank thoroughly.
- Inner Door Gasket: Inspect the gasket on the inner door for damage or debris. Clean both the gasket and the mating surface on the inner door.
- Door Gasket Overlap: Ensure the outer door gasket properly overlaps the tank when the door is closed.
5. Inspect Spray Arms:
- Remove both upper and lower spray arms.
- Carefully inspect them for cracks, especially along the seams. Sometimes, twisting the arm is necessary to reveal hairline cracks.
- Cracks in the spray arms can cause water to spray in unintended directions, potentially triggering the float switch.
6. Check the Float Assembly:
- Empty the Float Housing: Remove any water from the float assembly.
- Inspect for Debris: Check for debris, insects, or other obstructions within the float housing.
- Float Movement: Ensure the styrofoam float moves freely and doesn’t stick in any position.
- Float Switch Testing:
- Resistance Test: Use a multimeter to check the resistance of the float switch. In the open position (float down), there should be no continuity (infinite resistance). When the switch is closed (floating up), the resistance should be very low (approximately 0.2-0.3 ohms).
- Voltage Test: With the float switch open, there should be approximately 5VDC across the switch terminals. When the switch is closed, the voltage should drop to 0VDC.
7. Additional Door Inspection (Advanced):
- Remove Outer Door Panel: Carefully remove the outer door panel by unscrewing the retaining screws (usually six).
- Inspect Bottom Door Gasket (Internal): Check the gasket at the bottom of the inner door panel for damage, proper overlap with the tank, and debris.
- Fan/Door Gasket: Inspect the gasket between the fan and the door for any defects.
- Lower Spray Arm Direction: With the outer panel removed (and extreme caution taken if running a cycle), observe if the lower spray arm is directing water towards the door.
LG Dishwasher E1 or EI Error Code Troubleshooting Summary
| Problem Area | Possible Causes | Troubleshooting Steps |
|---|---|---|
| Installation/Leveling | Dishwasher not level, incorrect mounting, cabinet interference. | Use a level to check side-to-side and front-to-back leveling. Ensure proper mounting bracket installation and adequate cabinet clearances. |
| Tank Bushings | Missing or dislodged bushings at the bottom front corners of the tank. | Inspect for presence and secure placement of bushings. If dislodged, apply food-grade silicone before reinstalling. |
| Water Inlet Valve | Valve sticking open (mechanical), constant voltage supply (electrical), calcium buildup. | Observe if the valve stays on continuously during a cycle. Determine if the issue is electrical or mechanical. Check for calcium buildup on the valve screen; consider water filtration. |
| Door Gaskets | Deformities, tears, debris (food, grease), improper overlap with the tank. | Inspect both inner and outer door gaskets for damage and debris. Clean thoroughly. Ensure proper overlap of the outer door gasket with the tank. (Advanced) Remove outer door panel and inspect the inner door gasket and fan/door gasket. |
| Spray Arms | Cracks, especially along the seams. | Remove and inspect both upper and lower spray arms for cracks, twisting them if necessary. |
| Float Assembly | Water accumulation in the housing, debris, float sticking, faulty switch. | Empty any water from the float housing. Inspect for debris or obstructions. Ensure the float moves freely. Test the float switch for resistance (no continuity when open, low resistance when closed) and voltage (5VDC open, 0VDC closed). |
| Spray Arm Direction (Advanced) | Misdirected spray due to damage or other issues. | (Advanced) With the outer door panel removed (and extreme caution if running a cycle), observe if the lower spray arm is directing water toward the door. |
Important Notes:
- Safety First: Disconnect power to the dishwasher before performing any inspections or repairs.
- Professional Help: If you are uncomfortable performing these checks or the problem persists after troubleshooting, contact a qualified appliance repair technician.
By systematically following these steps, you should be able to pinpoint the cause of the E1 or EI error code and get your LG dishwasher back in working order.
I am a master Appliance Repair technician with over 35 years of experience in the field. I am passionate about helping people troubleshoot their appliances and fix common problems. My website, appliancemode.com, provides a wealth of information on troubleshooting common appliance issues and deciphering error codes. This website aims to empower people to tackle appliance repairs themselves and save money on service calls.
