Skip to main contentStart diagnosing Ed on your Sharp dishwasher
What this code means
Display board cannot receive or main board cannot send signal for over 20 seconds — communication failure between boards.
First step from the service manual
Check the display board
Next steps: diagnose the root cause
1
Verify the error code is active
Power cycle the unit and see if the code returns. If it does, the fault is persistent and requires diagnosis.
2
Get the full diagnostic procedure
Get step-by-step guidance, test values, and wiring diagrams from the OEM service manual.
$29/month · Cancel anytime · Or $9.95 3-day pass
What’s available for Sharp dishwasher models
Access Sharp dishwasher service manuals, wiring schematics, exploded parts views, and error code references on MyPros+.