ERROR CODE EXPLAINED
Thermador Dishwasher
Thermador Dishwasher E2120 Error Code
What it means
The dishwasher detected a Zeolite or Crystal Dry chamber-heater fault.
Try this first
- Turn dishwasher power off at the circuit breaker.
- Leave power off for 30 seconds.
- Restore power.
- Check whether the code returns.
Can I keep using it?🔴 Crystal Dry heater fault
Repair usually required?⚠ Service may be required
If the error keeps returning
If the condition returns after troubleshooting, qualified service may be required.
Official source
Troubleshooting information verified against manufacturer support documentation.
View manufacturer support page →Safety note:ApplianceSignal provides general troubleshooting information. Always follow the appliance manufacturer's safety instructions and disconnect power when required.