Haier Dishwasher Error Code E50 — Electronics/Control Board Problem
What this means
Error code E50 on Haier dishwashers indicates a general electronics or control board fault. The main control board has detected an internal processing error, a communication failure with a sensor, or a voltage irregularity. This is a catch-all code for electronic issues that do not fit a more specific fault category. Causes can include a power surge that damaged the board, a loose internal connection, a firmware glitch, or a failing control board component.
Step-by-step fix
3 stepsPower-cycle the dishwasher
Turn off the dishwasher at the circuit breaker for 5 minutes. Turn it back on. Many E50 errors are caused by temporary glitches — a power surge or a momentary sensor misread — that clear after a full reset.
Wait a full 5 minutes before restoring power. Shorter resets may not fully clear the board's memory.
Check all wire connections
If E50 returns after the reset, unplug the dishwasher and remove the inner door panel to access the control board. Reseat every connector. Look for signs of moisture intrusion, corroded pins, or burned components on the board.
Dishwasher door panels can accumulate moisture from steam — check for water droplets on or near the circuit board.
Replace the control board if necessary
If E50 persists and no loose connections or visible damage are found, the control board itself may need replacement. Order the correct board for your model, swap it, and reconnect all wiring.
Take detailed photos of all connections before removing the old board.
When to call a professional
Control board replacement on dishwashers involves working inside the door panel with multiple sensors and actuators. If you are not comfortable with this level of disassembly, a professional should handle it.
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
Learn more about our sourcesParts you may need
Main Control Board
Part #WD-6250-15 · $70–$160
If board shows damage or E50 persists after reset and connector reseating
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