Frigidaire Dryer AL-23 Error Code - Causes & Fix

Frigidaire Dryer AL-23 Error Code — What It Means

AL-23 does not appear in official Frigidaire dryer service documentation or fault code tables. Frigidaire dryers use E-codes and model-specific alphanumeric codes that map to detected faults in the control board, sensors, motors, or door switches. The code you see may be misread, displayed incorrectly, or specific to a model without publicly available tech sheets. Most Frigidaire dryer fault codes relate to door latching, thermal sensors, motor circuits, or control board outputs.

Without the exact model number and corresponding tech sheet, you cannot verify what AL-23 means or which component has failed. The safe approach is to retrieve the stored error code using the service diagnostic mode, compare it to your model’s official fault list, and test the indicated circuit before replacing parts.

Jump to Fix

Common Causes

• Misread or corrupted display The control panel may show a garbled code due to a temporary power glitch or display malfunction rather than an actual fault.
• Door switch failure A faulty door switch prevents the dryer from starting and can trigger control-board errors on many Frigidaire models.
• Thermal sensor or thermistor out of range Temperature sensors that read open, shorted, or outside expected resistance trigger safety faults in the control system.
• Control board relay or output fault The electronic control can log an error if an internal relay or triac fails to energize the motor, heater, or blower circuit.
• Wiring harness damage or loose connector Broken wires or corroded terminals between the control and sensors interrupt signals and register as component faults.
• Motor or blower circuit problem The drive motor or its start circuit can fail to respond to control signals, causing the board to log a motor-related error.

Step-by-Step Fix

1. Unplug the dryer from the wall outlet or turn off the circuit breaker to prevent shock during inspection.
2. Enter diagnostic mode by pressing and holding Cancel and Start/Pause together for six seconds, then read the displayed error code and write it down exactly as shown.
3. Look up the code in your dryer model’s tech sheet or service manual, because Frigidaire codes are model-specific and the meaning of each code varies by design.
4. Inspect the door switch by opening and closing the door while listening for a click, then test the switch terminals with a multimeter for continuity when pressed and open when released.
5. Check all wire harnesses at the control board, door switch, motor, and thermal sensors for loose connectors, broken wires, or corrosion at the terminals.
6. Test thermal components including the thermistor, thermal fuse, and any high-limit thermostats by removing one lead and measuring resistance, then compare readings to the model’s specifications.
7. Verify control board outputs by consulting the wiring diagram and testing voltage or continuity at the suspected relay or triac circuit, replacing the board only after confirming the fault is internal and all harnesses and sensors test good.

Parts Often Needed

When to Call a Pro

Call a qualified appliance technician if you cannot retrieve a valid error code in diagnostic mode, if the code you retrieve does not match any entry in the service documentation you can find, or if you are uncomfortable working with live voltage and multimeter testing. Professional diagnosis is also the safer choice when multiple codes appear, when the dryer has a history of repeated failures, or when you lack the exact tech sheet for your model number. A technician has access to manufacturer service databases and can identify model-specific faults that are not published in consumer-facing materials.