Home Fault Codes

Speed Queen Dryer Error Code E4: Meaning and Fix

E4
How E4 appears on a Speed Queen dryer display.
Representative Speed Queen dryer part photo (a heating element unit); the specific component for E4 (door switch fault) was not photographed separately
AppliancePartsPros.com product photo

Also shown as: E-4

Reading the dryer display

On a dryer the code shows in the time-remaining window or as blinking status lights. Write down the characters before you press anything, because starting a new cycle usually clears the display. Speed Queen shows two characters such as Ed or E1 on the control.

Speed Queen, from Alliance Laundry Systems, builds commercial-grade home laundry. Its washers and dryers use short error codes such as E1 or Ed, and the control is simpler than most consumer brands, which makes diagnosis more direct. The codes apply to model numbers such as DR7, DC5 and TR7; check the label on your unit to confirm yours.

What causes E4

How to fix it

  1. Open and firmly close the door, checking that nothing (towel, rack, detergent box, clothing) is keeping it from latching.
  2. Look at the latch hook, strike and door seal for cracks, bent metal or detergent build-up and clean or straighten as needed.
  3. Test the door switch for continuity.
  4. Switch the power off and inspect the latch connector and harness for loose pins or burn marks.
  5. Test the door switch or lock for continuity with a multimeter while operating the latch by hand.
  6. Replace the latch or switch assembly if it fails, then run a short cycle to confirm the door locks and the code clears.

Parts you may need

PartPart no.Buy
Dryer Heating ElementD510329PFind part

Part numbers are OEM references; confirm fit by your model number before ordering. Some links are affiliate links; we may earn a commission at no extra cost to you.

Questions

What does error E4 mean on a Speed Queen dryer?

The control cannot confirm the door state. Exact behavior can vary by model and software version; confirm against your own manual.

Can I keep using my dryer while E4 is showing?

No. The machine will refuse to run, and forcing a door interlock is unsafe.

How do I clear E4, and can I fix it myself?

Cancel the program, switch the appliance off and leave it unplugged (or the breaker off) for about five minutes, then restart. The code only stays cleared if the underlying problem is fixed, so work through the steps above. This one is usually a do-it-yourself job with basic tools.

Other Speed Queen dryer codes

Representative Speed Queen dryer part photo (a heating element unit); the specific component for E1 (inlet temperature sensor fault) was not photographed separatelyE1Inlet temperature sensor faultRepresentative Speed Queen dryer part photo (a heating element unit); the specific component for E2 (exhaust temperature sensor fault) was not photographed separatelyE2Exhaust temperature sensor faultRepresentative Speed Queen dryer part photo (a heating element unit); the specific component for E3 (moisture sensor / control fault) was not photographed separatelyE3Moisture sensor / control faultSpeed Queen dryer heating element part photo, the component usually involved when E5 (heating fault) appearsE5Heating faultRepresentative Speed Queen dryer part photo (a heating element unit); the specific component for E6 (restricted airflow) was not photographed separatelyE6Restricted airflowRepresentative Speed Queen dryer part photo (a heating element unit); the specific component for E7 (motor fault) was not photographed separatelyE7Motor fault

Sources

Part numbers are OEM references; confirm fit by your model number before ordering. Meanings compiled from manufacturer and parts-retailer documentation; see sources below. Unplug the appliance before opening it.

Applies to models including DR7, DC5, ADE9RGS, LDE30.