E20
Tristar
Configuration / EEPROM Data Error
Oven displays E20 and will not start; sometimes occurs after a power outage.
Advertisements
Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
Advertisements
Possible Causes
Corrupted configuration memory on control PCB, Interrupted firmware update (if applicable), Failing EEPROM chip
How to Fix / Troubleshooting
Safety first: Disconnect power for several minutes before attempting resets.
- Factory reset: Consult the Tristar user manual for a key combination to perform a factory reset (often holding specific keys while powering on). Perform the reset and see if E20 clears.
- Power cycle: Turn off the breaker for 10–15 minutes to fully discharge the control board, then restore power.
- Check for firmware notes: If your model supports firmware updates, ensure no update was interrupted. In most home scenarios, only a service technician can reflash firmware.
- Replace control PCB: If E20 persists, the EEPROM or microcontroller is likely faulty. Replace the main control PCB.
After replacement, verify all functions and reconfigure clock and settings.
Advertisements
Repair Difficulty
Professional Required
5/5
Required Part
Main Control PCB
Check Price on Amazon
We may earn a commission from links on this page.
Advertisements