E10 Serious Hard — consider a tech
Bosch Dryer E10 — Main Control Board Fault
Bosch Dryer · Error code E10
What E10 Means
Self-diagnostic detected an internal fault on the main control module — memory error, processor fault, or failed relay output. Dryer is generally inoperable.
Symptoms
- Dryer dead or partially functional
- Cycle won't start or runs incorrectly
- Multiple errors appearing
- E10 persists after power cycle
Common Causes
1
Failed main control board
Component-level failure; commonly caused by power surges or moisture.
2
Power surge damage
Lightning or grid event has damaged board components.
3
Moisture or condensation on board
Installation in damp space causes corrosion on the PCB.
4
Failed component in heater or motor circuit feeding back to board
Shorted load can damage board outputs.
How to Fix It
- Unplug the dryer for 10 minutes and restore power; if error persists, proceed.
- Unplug again and open the control panel.
- Inspect the main control board for burn marks, swollen capacitors, or corrosion.
- Before condemning the board, check the heater element and motor for shorts that may have damaged board outputs.
- If no external faults found, replace the main control board.
- Configure or pair the new board per service literature (model-specific).
- Reassemble and run a full diagnostic cycle to confirm normal operation.
- Consider installing a surge protector to prevent recurrence.
Parts You May Need
If diagnosis points to a failed part, these are the common replacements. As an Amazon Associate we earn from qualifying purchases.
More Bosch Dryer Codes
Verified against manufacturer documentation: bosch-home.com
Always unplug an appliance before servicing it. This guide is for informational purposes and is not a substitute for a qualified technician.