Whirlpool Dryer F31 Error Code: What It Means & What to Check
If your Whirlpool dryer is showing F31, this code usually points to a low or no line voltage problem. In plain language, the dryer may be getting enough power to turn the drum but not enough correct power for normal heater operation.
That makes F31 more of a power-supply issue than a venting, lint, or moisture-sensor issue. On Whirlpool dryers, line-voltage problems often trace back to a tripped breaker, improper 240-volt supply, or a power cord and terminal connection problem.
Quick Q&A
Quick answer: Whirlpool dryer F31 usually means the dryer is detecting an L2 low-voltage condition. Start by checking both breakers, confirming the dryer has proper 240-volt power, and making sure the cord connection is correct and secure.
What This Code Usually Means
Electric dryers use two sides of the power supply. One side can let the motor run while the other side is needed for heating. If one side of the supply is missing or weak, the dryer may still tumble but not heat correctly.
That is why F31 can be confusing. Homeowners often think the heating element has failed, when the real issue may be that the dryer is not getting the full power it needs.
This also makes F31 different from Whirlpool airflow warnings like AF or F4E3, which point to clogged venting or restricted airflow instead.
What You May Notice
- Dryer tumbles but does not heat well
- Clothes stay damp at the end of the cycle
- F31 appears on the display
- The problem starts after a breaker trip, outage, move, or installation change
- The dryer seems partly normal except for poor or no heat
Safety First
Be careful around dryer electrical connections. Electric dryers use 240-volt power. If you are not comfortable checking breakers or safely inspecting the power connection, it is better to stop there and schedule service.
Do not handle terminal screws or wiring with the dryer energized.
Quick Checks You Can Try
1. Check both dryer breakers
Many electric dryers use a separate 30-amp circuit fused on both sides of the line. One breaker can trip while the other side still lets the drum turn. Reset both breakers fully if needed.
2. Confirm proper 240-volt supply
If the dryer is not getting full 240-volt power, it will not operate correctly. If you are unsure about the outlet or supply, this is a good point to involve a qualified electrician or appliance technician.
3. Think about recent electrical changes
If the problem started after moving the dryer, installing a new cord, changing the outlet, or after a power interruption, that makes a supply issue more likely.
4. Check for obvious cord or terminal concerns
If the plug feels loose, the outlet looks damaged, or the cord was recently installed, stop and have it checked properly. Loose terminal screws or an incorrect power-cord setup can cause supply-related faults.
5. Test again after resetting power
After confirming the breakers, try the dryer again on a basic heated cycle and see whether the code returns.
Common Causes
- One tripped breaker on the dryer circuit
- Low or missing line voltage
- Improper power-cord installation
- Loose terminal connection at the dryer
- Outlet or house wiring problem
Not usually a vent code. Whirlpool reserves AF and F4E3 for airflow restrictions, so F31 points in a different direction.
What Beacon Usually Checks
When our friendly technicians in yellow diagnose a Whirlpool dryer showing F31, we usually start with the electrical side before chasing dryer parts:
- Incoming voltage at the dryer
- Whether both sides of the circuit are present
- Breaker condition
- Power cord and terminal block condition
- Whether the dryer tumbles without proper heat
- Whether another heating problem exists after voltage is confirmed
That helps separate a home power problem from a true dryer component failure.
When to Call Beacon
Call Beacon if F31 comes back after resetting the breakers, if the dryer still runs without heating properly, or if you suspect a cord, outlet, or terminal problem. At that point, proper electrical testing is usually the next step.
Request service online or call (352) 726-7530. You can also visit Appliance Error Code Help Center, Dryer Troubleshooting Help, and Why Is My Dryer Not Heating?.
Content Update & Editorial Review
This article was reviewed on April 11, 2026 by Chris for accuracy and homeowner safety.
Frequently Asked Questions
What does Whirlpool dryer F31 mean?
It usually means the dryer is detecting low or no line voltage, often tied to an L2 power-supply problem.
Can a Whirlpool dryer still tumble with F31?
Yes. In many cases the drum can still turn even when the dryer does not have the full power needed for heating.
Is F31 the same as an airflow problem?
No. Whirlpool usually uses AF or F4E3 for restricted airflow. F31 points more toward a voltage or supply problem.
What should I check first for Whirlpool dryer F31?
Check both circuit breakers first, then consider whether the dryer has proper 240-volt power and a correct cord connection.
Does F31 mean the heating element is bad?
Not necessarily. This code points first toward supply voltage problems, so it is smarter to verify power before assuming the heater has failed.
When should I call for service?
Call for service if the code returns after power checks, if the dryer still will not heat properly, or if you suspect a cord, outlet, terminal, or wiring problem.