my LG LDFN4542S dishwasher won't start at all, no lights, nothing. what do i do?

— asked by Alex

Quick answer: The control panel is unresponsive. The primary cause is a power supply interruption or a tripped thermal fuse.

Diagnosis

The control panel is unresponsive. The primary cause is a power supply interruption or a tripped thermal fuse.

How to Fix It

1. Verify the dishwasher's circuit breaker in your home's panel is ON.

2. Ensure the unit's power cord is firmly plugged into a live outlet.

3. Check the dishwasher's door is completely closed and latched. The unit will not power on if the door switch is not engaged.

4. Press and hold the Power button for 3 seconds to attempt a reset.

If That Didn't Work

The internal thermal fuse on the control board may have blown. This requires a technician to diagnose and replace the main control board.

Heads Up

If the unit suddenly lost power mid-cycle, the thermal fuse is a likely suspect. It is a safety device that fails open if the control board overheats.

📖 LG Appliance Troubleshooting Guide - TVs, Washers, Fridges & More
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