Whirlpool Dryer Error Codes — F01, F22, F23, F26, F30, F31, L2 Complete Guide

Common Symptoms

• Error code displayed on the control panel (F01, F02, F22, F23, F26, F28, F29, F30, F31, L2)
• Dryer stops mid-cycle and displays a fault code
• Dryer will not start — L2 or F01 displayed at power-on
• Clothes not drying — dryer runs but no heat (F22, F23, or F30/F31 codes)
• Dryer displays F30 or F31 and shuts down citing airflow restriction
• Moisture sensor codes F28/F29 — dryer stops before load is dry

Most Likely Causes

1. 1

   F01 — Main Control Board Failure

   F01 indicates the main electronic control board has detected an internal fault or has failed. On WED8500DC, WED9290FC, and other Whirlpool models with electronic controls, F01 is usually the control board itself. Before condemning the board, unplug the dryer for 5 minutes and restore power — a voltage transient can trigger F01 on an otherwise-functional board. If F01 returns consistently, inspect the board for burned components, cracked solder joints, or moisture damage. The board connects to the heating circuit, motor, and sensors; a board failure can mimic multiple other failures. Replacement boards for the WED series run $80–$180 depending on model.

2. 2

   F02 — Keypad / User Interface Failure

   F02 indicates the keypad (membrane switch assembly) is not communicating with the control board, or one or more buttons are registering as continuously pressed. On WED5000DW and WED4950HW, the keypad is a separate ribbon-connected component from the main board. A single stuck or shorted button will trigger F02. To diagnose: unplug, disconnect the keypad ribbon connector, and reconnect power. If F02 clears with the keypad disconnected, the keypad itself has failed. Cleaning with isopropyl alcohol under the membrane can resolve contact contamination; full keypad replacement is typically $30–$60.

3. 3

   F22 — Exhaust Thermistor Out of Range; F23 — Outlet Thermistor Fault

   F22 indicates the exhaust thermistor (temperature sensor on the exhaust duct) is reading outside the expected range or has failed open/shorted. F23 is a related code on some Whirlpool models indicating the outlet thermistor (drum exit temperature sensor) has faulted. Both are NTC thermistors — resistance decreases as temperature increases. At room temperature (70°F), a functional Whirlpool dryer thermistor reads approximately 10,000–12,000Ω. Test procedure: unplug dryer, disconnect thermistor connector, measure resistance. OL (open) or near 0Ω (shorted) = failed thermistor. The exhaust thermistor on most Whirlpool electric dryers is mounted at the exhaust duct port inside the lower rear panel. Common thermistor parts: WP8577274, WP3390291.

4. 4

   F26 — Drive Motor Fault

   F26 indicates the motor is drawing abnormal current, is not starting, or the control board's motor current sensing circuit has detected a fault. Primary causes: motor start winding failure (motor hums but does not spin), motor thermal overload (motor ran overheated and its internal overload tripped — will reset after 30 minutes of cooling), or a seized drum due to a broken belt, worn drum rollers, or a foreign object jamming the drum. Before replacing the motor, verify the drum rotates freely by hand with power disconnected. Also verify the drive belt is intact and properly routed. Whirlpool dryer drive motor WP279827 covers many 27-inch WED and MGD electric models.

5. 5

   F28 / F29 — Moisture Sensor Fault

   F28 and F29 indicate the moisture sensor bars (two parallel metal strips inside the front of the drum) are not functioning correctly. F28 typically indicates a moisture sensor short (bars touching or bridged by debris); F29 indicates an open circuit or disconnected sensor. The moisture sensor works by measuring the electrical conductivity of clothes in contact with the bars — wet clothes conduct, dry clothes do not. To clean: wipe sensor bars with isopropyl alcohol to remove fabric softener film (a common cause of F28 — the waxy film bridges the bars and simulates a short). If cleaning does not resolve the code, test continuity of the sensor wiring harness from the bars to the control board connector.

6. 6

   F30 / F31 — Restricted Airflow (Flow Sense)

   F30 indicates significant airflow restriction (approximately 75–80% of normal flow blocked). F31 indicates severe restriction (approximately 90%+ blocked) — the dryer shuts down as a fire safety measure. Whirlpool's Flow Sense system, like LG's d80/d90/d95 algorithm, uses the exhaust thermistor to detect airflow restriction by monitoring how quickly drum temperature rises relative to heater operation. Root causes: lint-packed lint trap slot, kinked flexible duct transition, lint accumulation in the 4-inch duct run, blocked exterior termination cap, or a failed thermal fuse that was caused by prior airflow restriction. After clearing the duct, the code should clear on the next complete dry cycle — no reset procedure is required on most WED/WGD models.

7. 7

   L2 — Low or No Voltage on L2 Leg (240V Fault)

   L2 indicates Whirlpool's control board is detecting insufficient voltage on the L2 leg of the 240V supply. Whirlpool dryers use 240VAC (two 120V legs, L1 and L2, combined for heating; 120V on either leg alone for motor and controls). L2 means one leg of the 240V circuit is missing or low. Causes: (1) Double-pole breaker with one pole tripped — the breaker handle may look midway, not fully tripped; reset both poles by flipping fully OFF then fully ON; (2) Burned terminal block inside the dryer — the 3-wire or 4-wire cord connects to a terminal block at the back of the dryer; L2 wire terminal is commonly burned or corroded; (3) Burned outlet receptacle — measure voltage directly at the outlet: should read 240VAC across L1 and L2, and 120VAC from each leg to neutral. If L2 reads below 100V at the outlet, the problem is upstream (breaker, panel wire, outlet) — do not open the dryer until supply voltage is corrected.

Quick DIY Checks

1. 1L2 code — check breaker and outlet voltage FIRST before touching the dryer: set a multimeter to AC voltage. At the 240V dryer outlet (do not unplug the dryer yet), measure voltage across the two hot slots (L1 and L2). You should read 240VAC. Measure L1 to the neutral slot: 120VAC. Measure L2 to neutral: 120VAC. If L2-to-neutral reads 0V or under 100V, one leg of the 240V circuit is missing — the dryer has not failed, your supply circuit has failed. Go to the breaker panel. Locate the double-pole dryer breaker. Flip it fully to OFF, wait 5 seconds, then flip fully to ON. Re-measure outlet. If the second leg is still absent after resetting, the breaker, breaker connection, or panel wiring is the fault — call an electrician before proceeding. Only open the dryer to inspect the terminal block after confirming 240VAC is present at the outlet.
2. 2Inspect the dryer terminal block for burned L2 connection: unplug the dryer from the wall (both poles of the 240V supply). Pull the dryer away from the wall. Remove the back access panel (2–4 screws) covering the terminal block where the power cord connects. Inspect the terminal block and cord wire connections — look for discolored, melted, or carbonized terminal posts, especially on the L2 (red wire on 4-wire cord, or outer hot wire on 3-wire cord). A burned terminal block (part WP3406015) must be replaced along with the cord. Do not attempt to clean a burned terminal and re-use it — the contact resistance will be high and it will burn again. While the back panel is open, also inspect the terminal block wiring going into the dryer for charred insulation.
3. 3Clear F30/F31 airflow codes — full duct cleaning procedure: pull the lint screen and clean it completely — also clean 6 inches into the lint trap slot with a vent cleaning brush. Disconnect the dryer from power. Pull the dryer out and disconnect the 4-inch exhaust duct at the dryer connection. Look inside the duct stub-out on the dryer — packed lint here is common. Disconnect the duct at the wall termination. Use a flexible vent brush kit to push lint out from both ends of the full duct run. Check the exterior vent termination — clear any lint mat, bird nests, or stuck flapper damper. Reconnect the duct and run one complete timed dry cycle. F30/F31 should clear automatically once normal airflow is restored.

1. 4Test the thermal fuse (WP3392519) — F30/F31 commonly blows the fuse: unplug the dryer. Remove the back panel. The thermal fuse on most Whirlpool electric dryers (WED5000DW, WED4950HW, WED8500DC) is mounted on the exhaust duct inside the cabinet — a small flat component with two wire terminals, typically black housing. Set multimeter to continuity mode. Disconnect fuse leads and probe both terminals. Continuity (beep) = functional fuse. No continuity = blown fuse, must replace. The thermal fuse WP3392519 is non-resettable — once blown, it must be replaced. Critical: replacing the fuse without clearing the airflow restriction that caused it will result in the new fuse blowing within 1–5 cycles. Fix the duct first.
2. 5Test exhaust thermistor (F22) and cycling thermostat (WP3387134): unplug the dryer. Access the exhaust duct area (back panel or front panel depending on model). The exhaust thermistor is a small probe at the exhaust duct outlet inside the cabinet — two wires, round-body sensor. Disconnect the two-wire connector. Set multimeter to resistance. At room temperature: functional thermistor reads 10,000–12,000Ω. OL or near 0Ω = failed, replace. The cycling thermostat WP3387134 (small disc on the exhaust duct, typically adjacent to the thermistor) should read continuity at room temperature — it opens only when exhaust temperature exceeds approximately 155°F. OL at room temperature = failed thermostat. Also test the high-limit thermostat WP3977767 mounted on the heater box: continuity at room temperature = functional; OL = failed.
3. 6Diagnose F28/F29 moisture sensor codes — clean and test sensor bars: the moisture sensor bars are two parallel stainless steel strips mounted inside the drum near the front lint trap on most Whirlpool dryers. Start with cleaning: dampen a cloth with isopropyl alcohol (91%+) and wipe both sensor bars thoroughly. Fabric softener sheet residue builds up as a waxy insulating film that causes F28 (false short or bridging) or intermittent F29. After cleaning, run a small wet load to confirm the code clears. If the code persists, unplug and locate the sensor wiring harness from the bars to the control board. Use a multimeter to test continuity of each wire from the sensor connector to the board connector — an OL on either wire means the harness is broken. The sensor bars themselves rarely fail; harness breaks are more common, usually at the front panel hinge point.
4. 7F01 control board reset and component isolation: before replacing an expensive control board for F01, eliminate external causes. Unplug the dryer for 5 full minutes (not just a breaker trip — unplug at the wall). Restore power. If F01 returns immediately, the board has a real fault. If F01 only returns after a heat cycle, suspect a sensor or wiring fault feeding false data to the board. Disconnect the exhaust thermistor, inlet thermistor, and moisture sensor connectors one at a time while the board is energized — if F01 clears with a specific sensor disconnected, that sensor's short circuit is causing the board fault. Also inspect the board for burned traces, exploded capacitors (domed tops), or melted MOVs at the line input. Replacement boards: WPW10111606 (WED5000DW/WED4950HW range), verify by model number.

Repair vs Replace

Recommended Tools & Parts

• Thermal Fuse — WP3392519

  OEM Whirlpool thermal fuse for most 27-inch WED and MGD electric dryer models. Non-resettable safety device mounted on the exhaust duct inside the cabinet. Tests open on multimeter when blown. Always clean the full vent duct when replacing.

  $10–$15

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• High-Limit Thermostat — WP3977767

  High-limit thermostat mounted on the heater box. Cuts power to the heating element if drum temperature exceeds approximately 250°F. Should read continuity at room temperature. OL at room temperature = failed, replace.

  $10–$18

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• Cycling Thermostat — WP3387134

  Cycling thermostat that regulates drum temperature during normal drying. Mounted on the exhaust duct adjacent to the thermal fuse. Should read continuity at room temperature. Commonly sold as a kit with the thermal fuse.

  $10–$20

  Buy on Amazon →

• Exhaust Thermistor — WP8577274

  NTC temperature sensor for Whirlpool dryer exhaust duct (F22 code). Reads approximately 10,000–12,000Ω at room temperature. Covers many WED5000, WED4950, and WED8500 models. Verify by model number.

  $15–$25

  Buy on Amazon →

• Terminal Block — WP3406015

  Replacement 3-terminal power cord connection block for Whirlpool dryers. Required when original terminal block is burned. Replace the full block — do not re-use burned terminals.

  $15–$30

  Buy on Amazon →

• Digital Multimeter

  Required for thermistor resistance testing, thermal fuse continuity, thermostat tests, and live voltage measurement at the outlet. Use a meter with CAT III or CAT IV rating for 240V outlet work.

  $15–$40

  Buy on Amazon →

Links are Amazon affiliate links (tag: fixitfastai-20). Prices are estimates.

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