Match the message to your next move
- For PF, wait through the 10-second power-up delay, then hold START to resume the cycle or press POWER to clear the message.
- For AF or Check Vent, start with the lint screen, then check the exhaust vent for restrictions.
- L2 points to low or no line voltage. An alternating F/E display calls for service.
Your dryer may still be turning while an airflow or voltage warning is on the display. We'd read the message before touching a key, because PF, airflow and voltage codes call for different next steps.
Choose your next move from the message you're seeing. A power interruption has a control-button response, an airflow restriction calls for screen and vent checks, and a persistent voltage warning needs an electrician. That separates the checks you can make at the dryer from a problem with its electrical supply.
| Code | Meaning | First move | When to get help |
|---|---|---|---|
| PF | The cycle was interrupted by a power failure. | After the power-up delay, hold START to resume or press POWER to clear PF. | Contact Whirlpool or schedule service if those controls leave the problem unresolved. |
| AF or Check Vent | Airflow is restricted. | Check the lint screen, then the vent. | Contact Whirlpool or schedule service if the checks don't solve the warning. |
| L2 | Line voltage is low or absent. | Clear the code, then check whether the message persists. | Consult a qualified electrician if it persists. |
| F4E3 | Airflow is restricted. | Check the lint screen, then the vent. | Contact Whirlpool or schedule service if the warning remains after those checks. |
| Alternating F/E, including F4 and E3 when they alternate | The control has detected a problem requiring service. | Read both numbers. | Arrange service for an alternating F/E code. |

Your model number leads to the right instructions
If the display changes between an F number and an E number, read both parts. The changing display is part of the code's meaning: that alternating pattern identifies a problem the control has detected and routes you toward service.
For a code outside the examples below, use your owner's manual. Enter your model number in Whirlpool's manual lookup (opens in a new tab) to find the product manuals and troubleshooting documents for your appliance. Use those instructions when you need to match a code or control action to your particular dryer.
Do the controls for these codes vary by model?
Use your model number to find the instructions for your dryer, especially for a code or control action outside these examples.
What if PF stays after I try START or POWER?
If those controls leave the PF problem unresolved, contact Whirlpool or schedule service.
What if AF or Check Vent comes back?
Check the lint screen and the full vent path. If those checks don't solve the warning, contact Whirlpool or schedule service.
Does F4E3 need service if it points to airflow?
If F4 and E3 alternate on the display, arrange service. For a nonalternating F4E3 warning, check the lint screen and vent first. If the warning remains, contact Whirlpool or schedule service.
PF lets you resume or clear the interruption
PF means a power failure interrupted the drying cycle. During a power outage, unexpected electrical noise in the supply can also make the control detect an incorrect voltage and show PF. The message therefore points you toward an interruption in power, rather than a lint-screen cleaning task.
If the dryer has just powered up, let its 10-second delay finish before pressing any keys. Pressing a key too early can itself cause PF to appear. Give the control that interval before choosing whether you want to continue the interrupted load or dismiss the message.
Touch and hold START to restart the interrupted dryer cycle, then check that the cycle resumes. To clear the display instead, press POWER and check that PF disappears. Choose START when your goal is to continue drying; POWER is the display-clearing action.
If these control responses leave the PF problem unresolved, contact Whirlpool for help or schedule service.
L2 can leave the dryer running without heat
L2 means low or no line voltage. A problem with your home's power supply may keep the heater from turning on while the dryer continues to run. A turning drum with this message can therefore leave you with clothes that aren't getting the heat they need.
This L2 warning appears only during initial installation. If your dryer isn't newly installed, check your owner's manual for the L2 instructions that apply to it. Use the installation timing to choose the applicable guidance, rather than applying this description to every L2 occurrence.
Touch any pad to clear the code and return to the estimated time remaining. That clears the display, while a supply problem can still keep the heater off. If the message persists, consult a qualified electrician.
If you're following a no-heat symptom beyond the display message, our guide to a Whirlpool dryer not getting hot covers that separate troubleshooting task.
Alternating F and E numbers require service
An F-number display alternating with an E-number display means the control has detected a problem requiring service. Read the complete pair so you can match what you're seeing to the instructions for your dryer.
If F4 and E3 alternate on the display, arrange service. For a nonalternating F4E3 warning, check the lint screen and vent first. If the warning remains after those checks, contact Whirlpool or schedule service.
Use the contact or scheduling options in Whirlpool's code help (opens in a new tab) to take that next step.
Share these details when you contact Whirlpool. Ask them to verify warranty coverage for your model and quote any service cost before you book.
Tick what applies and add details; the note above fills in as you go.
AF and Check Vent point to restricted airflow
For AF or Check Vent, look along the lint-screen and exhaust path. Possible restrictions include a clogged screen, lint in the vent, a crushed or kinked vent, or too many turns in the venting. Begin with the screen, then follow the house vent to address those separate places where airflow can be restricted.
Touching any key clears the code and returns the display to the estimated time remaining. Check the screen and vent before deciding the problem is solved.
Poor drying and a failure to heat are different symptoms. A dirty screen or obstructed vent can leave clothing incompletely dried even when the dryer produces heat, because moisture still needs a clear way out.
Clear the lint screen and put it back
Built-up lint reduces airflow, can increase drying time and puts extra stress on the heating system. Routine dry cleaning removes that screen restriction and belongs after each use.
- Locate the lint screen on top of the dryer or in the door opening and remove it, exposing the collected lint.
- Open the screen if necessary, then remove the lint with your fingers until the collected lint is off the screen.
- Close the screen and push it back into place, leaving it seated in the dryer.
Check the vent all the way outdoors
Steam from tumbling wet clothes must be able to leave the appliance for the load to dry. Venting needs to run from the dryer to the outside of your home and remain free of obstructions. Trapped moisture can significantly extend drying time even when the machine is heating.
- Check the house vent for kinks and obstructions such as lint.
- Clean its entire length as needed, from the back of the dryer to where it exits your home. Our guide to cleaning the dryer duct takes you through the fuller cleaning task.
- After the screen and vent checks, touch any key to clear the warning and look for the estimated time remaining. If the warning returns, contact Whirlpool or schedule service.
Plan to clean the venting that runs outdoors every one to two years, or more often if drying performance has decreased. How frequently you use the dryer and the kinds of items you dry affect how often that cleaning is needed.
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