Reviewed by Jordan Avery · Last reviewed August 22, 2026
Written by
Jordan Avery Appliance Repair Content SpecialistPublished August 22, 2026Technically reviewed August 22, 2026
Content status:
Reviewed
Error codeE66
ApplianceWasher
Affected model seriesAffinity/front-load/general-family or laundry-center platform
Quick answer
Heating-element relay failure
Model compatibility: Frigidaire has used more than one control platform, so E66 may mean something different on another appliance or generation. Confirm this against your model documentation and record your full model number before acting.
Plain language
What this code means
The control is reporting heating-element relay failure. Heating/cooling performance may be reduced or disabled, or the appliance may stop to protect itself from unsafe temperature. The code narrows the problem to a system or circuit, but it does not prove that one specific part must be replaced.Do not identify a part from the code alone. Confirm the complete model number and match it to the correct tech sheet or use-and-care manual. Same display code can have a different meaning on another Frigidaire washer generation; verify the model before applying repairs.
Signs
Symptoms you may notice
the code returns after a restart or at the same point in a cycle
heating/cooling performance may be reduced or disabled, or the appliance may stop to protect itself from unsafe temperature
the affected function may be disabled while other functions still operate
the appliance may enter a protective state to prevent additional damage
Why it happens
Possible causes
restricted airflow or abnormal heat buildup
a failed temperature sensor or probe
a heater/relay problem
a thermal limiter or protective device opening
a control-board issue
Before you call
Safe checks you can make
These are simple, non-hazardous checks only. If anything is unclear, stop and contact a technician.
Turn the appliance off and allow it to cool completely
Check user-accessible airflow paths, filters, and vents for blockage
For cooking appliances, verify cookware/rack/accessory placement against the owner manual
Do not bypass thermal cutouts, high-limit devices, or temperature sensors
Important safety warning. Stop using the appliance and arrange service if you notice smoke, a burning smell, sparking, repeated breaker trips, exposed wiring, uncontrolled heating, water reaching electrical parts, a gas odor, or any condition that appears unsafe.Safety note: Do not bypass the lid/door lock or operate the washer with safety interlocks defeated.
Get help
When to call a technician
A technician should verify the exact Frigidaire model and retrieve the matching service data before testing internal components. Depending on the issue, diagnosis may include wiring continuity, sensor resistance, supply voltage, relay outputs, control-board communication, motor feedback, or configuration checks. Those tests should not be guessed from a generic code list.For persistent E66, professional diagnosis is appropriate after the safe external checks above have been completed.
Seeing this code on your Frigidaire appliance?
Book a repair visit for a clear estimate and approval before any work. Share the full model number and the exact code so diagnosis can start with the right path.
When a Frigidaire washer stops working, start with the exact symptom, model number and any displayed code. The goal is to identify the failed system before parts are replaced.Comm…
On the platform covered by this page, E66 means heating-element relay failure. Because Frigidaire has used different control platforms, confirm the model number before treating this as a universal definition.
A single power reset and the user-accessible checks listed above are reasonable. If the code returns, do not repeatedly reset the appliance to mask the issue; diagnose the underlying condition.
Professional service is recommended when the code persists after safe checks, involves internal wiring/electronics, or the appliance shows overheating, burning smells, leakage near electrical parts, tripping breakers, or other unsafe behavior.
References
Sources & references
**Frigidaire Service Tech Handbook — Electrolux Home Products** — manufacturer service handbook mirror https://manualzilla.com/doc/6030612/frigidaire-service-tech-handbook---atech-appliance-repair... This page paraphrases diagnostic information rather than reproducing service-manual text. Model-specific documentation takes precedence if it conflicts with a general guide.
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