Explaining Dryer Error Codes and When to Call Professional Help

Dryer Error Codes Are Telling You Something

Your dryer’s display can light up with an error code that looks like a random mix of letters and numbers, but it is never just a glitch. These dryer error alerts are direct signals about issues such as restricted airflow, overheating, or problems within the vent system that can impact safety and performance.

For homeowners in NE Wisconsin, seasonal factors like heavy snow, ice, fallen leaves, and animal nests often make these dryer error code warnings more common and more urgent. Knowing how to respond, when to take a few troubleshooting steps, and when to request service from Dryer Vent Wizard of NE Wisconsin is essential to keeping dryers efficient, clothes dry, and households safe.

Common Dryer Error Codes by Brand

Every dryer brand uses its own system of error codes to warn about airflow restrictions, lint buildup, or vent system problems. Some dryer error code messages are simple, like reminders to check the lint filter, while obscure numeric alerts can be difficult to interpret. 

Recognizing the most common dryer error codes across most models helps homeowners act quickly and keep their appliances safe and reliable.

Quick Reference Table

Brand	Code(s)	Meaning	Action
LG	d75–d95	75–95% airflow blockage	Stop use, schedule cleaning
Samsung	C80/C90, HC, tS, Clg	Blockage/overheating	Call before next use
Whirlpool/Maytag	AF, F4E3	Airflow restricted	Inspect & clean vent
Kenmore	F30	Residue/airflow blockage	Clean lint trap & vent
Electrolux	EF1	Ventilation blockage	Schedule professional cleaning
Bosch	E01/E02	Fluff filter/vent blockage	Clear & inspect
Amana	AF	Low airflow	Clean vent
Speed Queen	AF/EAF2	Airflow problems	Clean vent & ducting

LG Dryer Error Codes

• d75 – 75% airflow restriction (early warning)
• d80 – 80% restriction
• d90 – 90% restriction
• d95 – 95% restriction
• FO – Lint filter not inserted
• tE1 / tE2 / tE3 – Thermistor faults
• HS – Humidity sensor fault

If you see error codes d75-d95 on your dryer's display, stop using the appliance immediately and request service from Dryer Vent Wizard of NE Wisconsin. These error code warnings mean the dryer vent is dangerously restricted.

Samsung Dryer Error Codes (Airflow & Overheating)

Samsung dryers display letter and number combinations similar to the airflow warnings used by LG models.

Vent Blockage Test Codes

• Clg / Cg – Vent clogged
• C80 / C8 / C8o – ~80% blocked
• C90 / C9 / C9o – ~90% blocked

Overheating

• HC / hE / HC4 / 1 HC – Overheating from restricted vent

Temperature Sensor (Airflow-Related)

• tS / t5 / tC / tO / t0 / tE3 / tC5 / tCS / 1tC / 1tC5 / 1tCS – Sensor/control faults from poor airflow

Whirlpool / Maytag Dryer Error Codes

• AF – Restricted airflow
• F4 E3 – AF equivalent
• F31 – Moisture sensor issue
• F2E1 – Stuck button

Kenmore Dryer Error Codes

• AF – Restricted airflow
• F30 – Lint/fabric softener residue restricting airflow

GE / Electrolux / Frigidaire Dryer Error Codes

• E22 / E64 – Vent or heater fault
• Clean Filter – Reminder (often ignored)
• EF1 (Electrolux) – Ventilation blockage
• E4 – Humidity sensor error
• E8C (Frigidaire) – High limit thermostat tripped
• E A5 – Service needed (control/sensor)
• Mute – Alerts silenced (can hide errors)

Bosch Dryer Error Codes

• E01 / E02 – Fluff filter or vent blockage

Amana Dryer Error Codes

• AF or “Check Vent” – Low airflow from lint or hose issues

Speed Queen Dryer Error Codes

• AF / EAF2 – Airflow problems from clogged vents or lint trap

When issues or other errors appear, it is best to request professional service before costly damage occurs.

Why Airflow Matters

Your dryer needs steady airflow through the dryer vent to release heat and moisture. When lint buildup, crushed ducts, or outside blockages stop that air from moving, the dryer overheats, drying cycles drag, and fire risks rise. Error codes are often the only warning, and homeowners in NE Wisconsin should address issues by calling for professional service before problems persist.

The Downside of Fabric Softener

Fabric softener sheets and liquids leave residue that coats the lint filter, causing more lint to stick, blocking airflow in the dryer vent, and forcing the dryer to overheat during each drying cycle.

Signs of Residue Buildup:

• The lint screen feels sticky or coated
• Laundry comes out damp even after a full drying cycle
• Musty, sour, or scorched odor from the dryer

How to Prevent It:

• Limit fabric softener use or replace with wool dryer balls
• Deep clean the lint filter monthly with warm water and mild soap
• Arrange yearly professional dryer vent cleaning to keep the system clear and efficient

Simple Troubleshooting Steps to Try First

Before requesting professional help, try these troubleshooting steps:

• Disconnect the dryer power cord or switch off the circuit breaker for 5–10 minutes.
• Clean the lint trap and surrounding housing thoroughly.
• Inspect the exhaust hose for kinks, crushing, or sharp bends that restrict airflow.
• Check the outside dryer vent for nests, snow, leaves, or other debris blocking air movement.
• For Electrolux dryers: disable “Mute” mode so alerts appear.
• Restart the dryer to see if the error continues.

If the error persists, request service from Dryer Vent Wizard of NE Wisconsin. Our team provides expert dryer vent services to fix airflow problems and restore safe operation.

Signs You Need Cleaning (Even Without a Code)

Not every issue will show up as an error code. Pay attention to these warning signs that your dryer vent system needs attention:

• Clothes are taking longer to dry, even on a normal drying cycle
• The dryer feels hot to the touch during operation
• Burning smell while the dryer runs
• Visible lint collecting around the dryer base or near the dryer door
• Excess humidity is building up in the laundry room
• Running timed-dry repeatedly just to finish a load
• Drum temperature climbing above 150°F, which can signal unsafe conditions

Maintenance Frequency & Vent Length Rule

How often to clean a dryer vent depends on household size, dryer use, and vent design:

• Annually – Recommended for most homes to keep the dryer vent safe and efficient.
• Every 3–4 Months – For large families, households with pets, or homes with long vent runs.
• Every 3–5 Years – For light-use homes, such as single-occupant households with a smaller load size.
• Vent Length Rule – Maximum 25 ft, minus 5 ft for each 90° bend and 2.5 ft for each 45° bend.

NE Wisconsin Seasonal Hazards

NE Wisconsin’s seasons also add dryer vent risks and considerations:

• Winter (December, January, February): Cold temperatures and snow can cause moisture buildup or vent blockages.
• Spring (March, April, May): Birds may build nests, and other animals may enter the duct.
• Summer (June, July, August): Warm and humid temperatures lead to moisture buildup, causing lint accumulation.
• Fall (September, October, November): Falling leaves can cause vent blockages.

Anticipating and addressing these hazards early reduces dryer vent problems before they start.

Dryer Vent Wizard's Process and Guarantee

When you call Dryer Vent Wizard of NE Wisconsin, you get:

• Full dryer vent inspection and airflow test
• Lint and debris removal from the dryer to the outside vent
• Hose reconnection and vent length adjustments
• A 90-day service guarantee for added peace of mind

When to Call Dryer Vent Wizard of NE Wisconsin

If dryer error codes keep returning after troubleshooting it yourself, it’s time to request an expert service. Dryer Vent Wizard of NE Wisconsin provides comprehensive dryer vent solutions to diagnose airflow restrictions, fix dryer vent blockages, remove hidden lint, and check that the vent system meets safety standards.

Our technicians also handle:

• Resetting the child lock and resolving the control panel issues
• Replacing or reinstalling crushed or old vent hoses
• Re-routing dryer vent systems for better airflow and efficiency
• Testing for correct voltage, grounding, and safe power cord connections
• Performing deep dryer vent cleaning and servicing internal dryer components

Don’t Let Your Dryer Become a Danger

An error code is a warning sign that should not be taken lightly. Alerts like “Clean Filter” or airflow codes d90 and d95 often mean the dryer vent is blocked, raising fire risks. These codes indicate it is time to service your clothes dryer and its vent system.
Dryer Vent Wizard of NE Wisconsin checks sensors and power cord connections, clears lint, and restores safe airflow. Request service today to keep your dryer running safely and efficiently.