LG Washer PF Error: Causes and Solutions
When the letters “PF” appear on the display panel of an LG washer, the washing machine is reporting that it lost power during a running cycle. The LG washer PF error stands for Power Failure, and it indicates that the electrical supply to the machine was interrupted while a wash cycle was in progress. A power outage, a tripped circuit breaker, or a loose plug connection can all trigger the LG washer PF error. The washer remembers that it was mid-cycle and displays PF when power returns. This is not a mechanical failure; it is the washer telling you that the cycle did not finish.
According to LG’s official troubleshooting documentation, “PF” appearing on the display guides you through the power failure recovery system. LG reassures users that this is not a product defect. The power failure recovery system remembers and resumes the job the machine was doing right before power loss due to a power outage or the power plug being pulled out.
This article explains exactly what the LG washer PF error means, what conditions trigger it, and the step-by-step procedures recommended to clear it. It covers both the immediate reset process and the diagnostic checks needed when the error recurs. All information presented here is drawn from LG’s official support documentation and verified troubleshooting sources
?What Does the LG Washer PF Error Mean
The LG washer PF error indicates that a power failure interrupted the cycle. LG’s documentation confirms that [PF] may be displayed if the power cord is plugged loosely or if the electrical outlet has a problem. The washer’s control board detected an interruption in the electrical supply and logged it as a power failure event.
For top-load models, LG explains that [PF] appears during the power failure recovery system. The system is designed to remember the state of the machine before the power loss so that the cycle can potentially resume. For front-load models, the same principle applies: the error code appears in the display when power is restored after an interruption.
This is not a code that indicates a broken component. The LG washer PF error is a notification, not a fault. As one source explains, PF on an LG washer means power failure: the washer lost power mid-cycle and is telling you the run was interrupted, not that a component broke. Clearing it is typically a simple matter of pressing a button and restarting the cycle
Common Causes of the LG Washer PF Error
Several conditions can trigger the LG washer PF error. Understanding these causes is the first step toward resolving the issue and preventing its recurrence.
Power Outage
The most common cause of the LG washer PF error is a neighborhood power outage or utility interruption that cut power to the washer during a cycle. When the electrical supply fails, the washer’s control board loses power, and when the supply is restored, the board displays PF to indicate that the cycle was interrupted.
Tripped Circuit Breaker
If the washer shares a circuit with other high-draw appliances such as a dryer or space heater, the breaker may trip from overload. When the circuit breaker trips, power to the washer is cut, and the LG washer PF error appears when the breaker is reset. LG’s documentation notes that a house fuse being blown, a circuit breaker having tripped, or a power outage having occurred can all cause the PF code.
Loose Power Cord Connection
A loose power cord connection is another frequent cause. If the plug is not fully seated in the wall outlet, or if the outlet itself has worn spring contacts that lose grip on the plug prongs, the electrical connection can be intermittent. This intermittent contact can cause the washer to lose power during operation, triggering the LG washer PF error.
Faulty Outlet or Wiring
A worn GFCI outlet that trips intermittently, or old wiring in the wall that has a loose connection that drops power under load, can also cause the LG washer PF error. LG’s documentation specifically mentions that the power cord being plugged loosely or the electrical outlet having a problem can cause the PF code to appear. If the voltage drops below a certain threshold, LG washers detect this as a power failure and manifest it as a PF error.
Power Surge
A sudden power surge of electricity through the home wiring system can trigger the LG washer PF error on the washing machine’s control panel. Voltage fluctuations, including drops of 10% or rises of 5%, may be enough to cause the control board to register a power failure event.
How to Clear the LG Washer PF Error: Step-by-Step Instructions
The LG washer PF error can often be cleared with a simple reset procedure. The following steps are recommended, starting with the simplest action and progressing to more involved checks.
Step 1: Restart the Interrupted Cycle
The first and simplest action is to restart the cycle. Press the Power button to clear the PF code. Then select the same cycle you were running and press Start. The washer restarts the full cycle from the beginning. On some LG models, you may be able to press Start without reselecting the cycle; in that case, the washer resumes from where it stopped.
LG’s documentation confirms this approach, stating that pressing the Start/Pause button will restart the cycle. The power failure recovery system is designed to remember the cycle state and allow you to resume.
Step 2: Check the Circuit Breaker
If restarting the cycle does not clear the LG washer PF error, the next step is to check the circuit breaker. Open your electrical panel and find the breaker for the laundry room circuit. If it is tripped (in the middle position), switch it fully off and then back on. If the breaker trips again when the washer runs, the circuit is overloaded or the breaker is weak. LG’s documentation advises resetting the circuit breaker or replacing the fuse if it has blown.
Step 3: Inspect the Power Cord and Outlet
The next step is to inspect the power cord and outlet. Make sure the washer plug is pushed fully into the outlet. Wiggle it gently; if there is any play, the outlet contacts are worn and the outlet should be replaced. LG’s documentation emphasizes that the power cord should not be plugged loosely and that the electrical outlet should be in good condition.
It is important to note that an extension cord should never be used with a washer. The washer should be on a dedicated 20-amp circuit. Using an extension cord can create an intermittent connection and may not provide adequate current for the washer’s motor and heating elements.
Step 4: Test the Outlet Voltage
If the outlet and cord appear to be in good condition, the next step is to test the outlet voltage. Use a multimeter set to AC volts and measure the outlet. You should read between 110V and 125V. If the reading fluctuates or drops when the washer starts, the circuit wiring has a problem. In this case, an electrician should be called to diagnose and repair the wiring.
Step 5: Check the GFCI Outlet
If the washer is plugged into a GFCI outlet (the kind with Test and Reset buttons), press Reset firmly. GFCI outlets in laundry rooms can trip from moisture or minor ground faults. If the GFCI keeps tripping, it is either faulty or detecting a real ground fault in the washer’s power cord. LG’s documentation notes that the power cord should be plugged into a properly functioning outlet.
Step 6: Perform a Complete Power Reset
If the above steps do not resolve the LG washer PF error, a complete power reset may be necessary. Unplug the washer from the wall outlet and wait approximately 5 minutes. Then plug it back in and restart the wash cycle. This procedure allows the control board to fully discharge and reset, clearing any transient error states. LG’s documentation and multiple troubleshooting sources recommend this approach for persistent PF errors.
Quick Reference Table
| Situation | What It Means | What To Do |
|---|---|---|
| PF appears once after a storm or known outage | Power failure interrupted the cycle | Press Power, select the cycle, and press Start |
| PF appears repeatedly without known outage | Intermittent electrical problem | Check outlet, cord, and circuit breaker |
| Breaker tripped | Circuit overloaded or breaker weak | Reset breaker; if it trips again, call an electrician |
| Plug loose in outlet | Intermittent power connection | Push plug fully in; if loose, replace outlet |
| GFCI outlet tripped | Moisture or ground fault detected | Press Reset; if it keeps tripping, call an electrician |
| Voltage fluctuates when washer starts | Circuit wiring problem | Call an electrician to inspect wiring |
| PF returns after all checks | Internal electrical issue | Service is required |
Frequently Asked Questions
?What does the LG washer PF error mean
LG error code PF means your LG washer lost power during a running cycle. A power outage, tripped breaker, or loose plug interrupted the electrical supply. The washer remembers it was mid-cycle and displays PF when power returns.
?Is the LG washer PF error a product defect
No. LG’s official documentation states clearly that PF appearing on the display is not a product defect. It guides you through the power failure recovery system, which remembers and resumes the job the machine was doing right before power loss.
?Can I fix the LG washer PF error myself
Yes, in many cases. The first step is to press the Power button to clear the PF code, then select the cycle and press Start. If that does not work, check the circuit breaker, inspect the power cord and outlet, test the outlet voltage, and check the GFCI outlet.
?What causes the LG washer PF error
The most common causes are a power outage, a tripped circuit breaker, a loose power cord connection, a faulty outlet or wiring, and power surges. LG’s documentation identifies loose plug connections and electrical outlet problems as specific triggers.
?How do I reset the LG washer after a PF error
Press the Power button to clear the code, then select the cycle and press Start to restart. For a complete reset, unplug the washer, wait approximately 5 minutes, and plug it back in
?What should I check if the PF error keeps appearing
If the PF error appears repeatedly without an obvious power outage, check the electrical outlet with a lamp or phone charger to verify consistent power. Check the home circuit breaker for the laundry room. A breaker that trips during high-current spin cycles indicates an overloaded circuit or a failing breaker.
?Should I use an extension cord with my LG washer
No. Never use an extension cord with a washer. The washer should be on a dedicated 20-amp circuit. Using an extension cord can create an intermittent connection and may not provide adequate current.
?When should I call a professional for the LG washer PF error
Call a technician if the PF code appears repeatedly without an obvious power outage. This indicates an intermittent electrical problem inside the washer or at your outlet. Also call if the outlet voltage fluctuates when the washer starts, or if the GFCI keeps tripping.
When the LG Washer PF Error Requires Service
The troubleshooting steps described above address the most common causes of the LG washer PF error. However, there are circumstances in which professional service is required.
If the PF code appears repeatedly without an obvious power outage, this indicates an intermittent electrical problem inside the washer or at your outlet. LG’s documentation advises that if the error display still indicates on the display panel after performing the recommended instructions, it needs to be checked by a service technician.
A PF error that occurs reliably as the drum ramps into spin, almost never earlier in the cycle, suggests the laundry circuit is sagging under peak spin current due to a shared load or a tired breaker. This is an electrician’s question, not an appliance one. Conversely, a PF that occurs every cycle on an outlet that a lamp runs from all day, with no rocking and nothing shared, points to the washer’s own cord assembly or inlet wiring. This is the one case in the troubleshooting sequence that is a service call.
It is important not to continue running cycles repeatedly when the LG washer PF error persists. Each retry drives the same current through the same circuit, and repeated interrupted spins are harder on the motor and control than the original outage was. Addressing the issue promptly protects both the appliance and your home.
Preventing the LG Washer PF Error
While the LG washer PF error cannot always be prevented, certain practices reduce the likelihood of its occurrence. Ensuring the washer is plugged into a dedicated 20-amp circuit that is not shared with other high-draw appliances helps prevent breaker trips. Keeping the power cord fully seated in the outlet and avoiding extension cords maintains a stable electrical connection.
Periodically checking the GFCI outlet and resetting it if necessary ensures that moisture-related trips do not interrupt cycles. If voltage fluctuations are a known issue in your area, a whole-home surge protector or a voltage regulator for the washer circuit may help stabilize the power supply.
By following these preventive practices, you can reduce the chance of encountering the LG washer PF error and help ensure that your washing machine completes its cycles without interruption.
