E28 is a Bertazzoni dishwasher diagnostic usually grouped with a possible water-drainage problem. This page keeps DIY limits clear; recurring faults belong with an independent technician at Bertazzoni Appliance Repair.
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 codeE28
ApplianceDishwasher
Affected model seriesSelect Bertazzoni electronic-control appliances (verify the code map for yours)
Quick answer
E28 · a drainage issue · Bertazzoni dishwasher — independent summary for homeowners.
Model compatibility: Bertazzoni reuses codes across series and model years, so E28 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
On many Bertazzoni dishwasher models, E28 is commonly tied to a possible water-drainage problem. Series and control generations differ — confirm the wording in your model documentation before acting. Treat this as independent homeowner guidance from Bertazzoni Appliance Repair, not a substitute for model-specific service literature.
Signs
Symptoms you may notice
The dishwasher stops mid-cycle and shows E28
Water is left standing in the dishwasher
Draining seems slow, noisy or incomplete
Why it happens
Possible causes
A blocked or dirty filter (on models that have one)
A kinked, clogged or poorly routed drain hose
A restricted drain pump or drain path
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 and clean the accessible filter if your model has one
Check the visible drain hose for kinks or blockages
Confirm the drain or standpipe access is clear
Keep notes on any recent power outages, filter changes, or installs before the visit
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
E28 that survives basic checks belongs with independent service. Bertazzoni Appliance Repair verifies the cause against your model documentation first.
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.
Yes for a single reset after safe checks — no for repeated clears. Recurring E28 belongs with an independent technician at Bertazzoni Appliance Repair.
Not necessarily. Bertazzoni reuses codes across series and years. Record your full model number so Bertazzoni Appliance Repair can interpret E28 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 use-and-care guide for your model — fault indicators
