Written by
Hannah Ostrowski Appliance Care EditorPublished October 26, 2026
VERIFIED
Error codeE66
ApplianceDryer
Reading E66
The thermal limiter circuit is open when a Frigidaire dryer displays E66. Tech Data Sheets 137265000B (1202) and 137559700C (1302) are where the manual lists it, for the dryers they describe.
Fault conditions named
The outlet thermal limiter has tripped.
The inlet thermal limiter has tripped (gas models only).
The wiring is defective.
Repair sequence in the manual
Look for signs of high temperature and damage caused by it at the limiter.
If there are none, replace the limiter.
If the limiter proves good, check the venting for blockage.
Finally check the high limit thermostat, or replace it, and test the dryer again.
Neighbouring heater codes
E65 counts high limit thermostat trips that went over the allowed number.
For a Frigidaire dryer in San Francisco or elsewhere around the Bay Area, Frigidaire dryer repair explains how a visit works, and (415) 319-6371 reaches us. Have E66, the model number and a note of what has been tried at hand when you call.
Model compatibility: Frigidaire reuses codes across series and model years, so E66 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
Thermal limiter open circuit.
Important safety warning. Do not attempt repairs involving electrical components, gas, water lines, refrigerant or sealed systems. Unplug the appliance if it is safe to reach the outlet, and leave internal diagnostics to a qualified technician.
Seeing this code on your Frigidaire appliance?
Book a specialist visit for a clear estimate and approval before any repair.
Frigidaire FDEX22E4EW dryer repair for San Francisco homes: heating, airflow, motor and control faults examined first, with an estimate in writing and…
Frigidaire FDGX21E4EW dryer repair in San Francisco: ignition-side and airflow questions handled with a diagnosis first, a written estimate, and your approval…
You submit a request with your appliance model and symptom, we confirm an appointment window, and a technician performs an on-site diagnosis. You then receive a clear estimate and decide whether to proceed before any repair begins.
Yes. We provide an upfront estimate after diagnosis. No parts are ordered or installed until you approve the work, so there are no surprise charges.
Replacement parts are selected for the exact model and confirmed with you before ordering or installation.
Service areas are listed on the Locations page. Contact us with your ZIP code to confirm current coverage for your address.
Ready to get your Frigidaire appliance working again?
Book a repair online or call us — clear estimates and approval before any repair work begins.
