Bertazzoni dishwasher owners see E20 when a possible water-level or pressure-sensing problem is in play. Use this guide, then schedule diagnosis with Bertazzoni Appliance Repair if it returns.
Reviewed by Marco Bellini · Last reviewed August 12, 2026
Written by
Marco Bellini Appliance Repair Content SpecialistPublished August 10, 2026Technically reviewed August 12, 2026
Content status:
Needs Technical Review — this entry is awaiting technical verification and should be confirmed before it is relied upon.
Error codeE20
ApplianceDishwasher
Affected model seriesBertazzoni appliances with electronic diagnostic displays (confirm your model)
Quick answer
E20 on a Bertazzoni dishwasher: plain-language overview tied to a level/pressure issue — not factory service literature.
Model compatibility: Bertazzoni reuses codes across series and model years, so E20 may mean something different on another appliance or generation. Confirm this against your model’s documentation and record your full model number before acting.
Plain language
What this code means
Bertazzoni dishwasher controls may raise E20 when a possible water-level or pressure-sensing problem is involved. Record the full model number; the same characters can map differently across years. Photograph the full code and rating label before any reset or parts conversation.
Signs
Symptoms you may notice
The dishwasher shows E20 and over- or under-fills
The cycle stalls with E20 displayed
Water levels seem wrong when E20 appears
Why it happens
Possible causes
A pressure switch or level sensor
A blocked pressure hose or chamber
A control interpreting levels as a fault
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Check the accessible filter for blockages
Confirm drainage access is clear
Perform a manufacturer-approved restart
Record the full Bertazzoni model and serial numbers before contacting a technician
Important safety warning. Do not open internal panels, access high-voltage wiring, or bypass any safety device. If you see smoke, sparks, a burning smell, or water near electrical parts, switch the appliance off at the outlet if it is safe to do so and call a professional.
Please avoid
What not to attempt
Do not open internal panels or access high-voltage components
Do not bypass door locks, safety switches or interlocks
Do not keep running the appliance if there is water near electrical parts, a burning smell or sparks
Get help
When to call a technician
If E20 persists after the safe checks above, book a diagnosis with Bertazzoni Appliance Repair. An independent technician can confirm what E20 means on your Bertazzoni model — we are not an official Bertazzoni service center.
Seeing this code on your Bertazzoni appliance?
Book a specialist visit for a clear estimate and approval before any repair. Independent service — not an official Bertazzoni service center.
Clearing the display is fine once notes are saved — it is not a repair. When E20 comes back on the next use, contact Bertazzoni Appliance Repair.
Not necessarily. Bertazzoni reuses codes across series and years. Record your full model number so Bertazzoni Appliance Repair can interpret E20 correctly.
No. Bertazzoni Appliance Repair publishes independent repair guidance for homeowners. Use your Bertazzoni model manual for manufacturer wording, then book an independent technician if the fault continues.
References
Sources & references
Bertazzoni appliance user manual — error/display messages section
