Short answer:
Most dishwashers won’t start due to power issues, door latch problems, or control lock settings.
Quick Checklist
1. Power Supply
- Check breaker
- Test outlet
2. Door Latch
- Door must click fully shut
- Broken latch = no start
3. Control Lock
- Look for a lock icon
- Hold lock button for 3–5 seconds
4. Water Supply
- Valve under sink fully open
When It’s Likely the Control Board
- Lights flicker
- Buttons don’t respond
- Unit randomly stops