Roper Dryer Error Code PF: Power Failure Troubleshooting... | appliancefaults.com

Technical Background:

The PF error code on a Roper dryer signifies that the main control unit (MCU) detected a power loss or voltage fluctuation. The MCU monitors the incoming voltage and stores operational data. A sudden drop or surge in voltage can trigger the PF code, indicating a potential issue with the power supply or the internal electronics. The MCU relies on a stable 120V AC supply.

Symptoms:

The Roper dryer displays error code 'PF' on the control panel. The dryer may not start, or it may stop mid-cycle displaying the PF code. The code typically indicates a power failure or interruption occurred during operation.

Possible Causes:

Intermittent power supply from the outlet.
Loose wiring connections within the dryer.
Faulty main control board (MCU).
Power surge damage.
Tripped breaker at the breaker panel.
Failed thermal fuse (indirect cause).

Solution:

1

Unplug the dryer from the outlet.
2

Check the breaker at the breaker panel. Reset if tripped.
3

Verify the outlet is supplying 120V AC using a multimeter.
4

Open the dryer access panel and inspect wiring connections to the MCU. Tighten any loose connections with a 1/4-inch nut driver.
5

Inspect the thermal fuse for continuity using a multimeter. Replace if open.
6

If power is good and wiring is secure, replace the main control board (MCU).
7

After repairs, plug the dryer in and test operation.

Safety Warning:

Disconnect power to the dryer at the breaker panel before performing any repairs. Lock Out/Tag Out (LOTO) procedures should be followed to prevent accidental energization. High voltage is present when the dryer is connected to power.

Prevention:

Avoid overloading the circuit the dryer is connected to. Periodically inspect the dryer's power cord for damage. Consider using a surge protector for the dryer to protect against voltage spikes.

Expert Tip:

To clear the PF code on some Roper dryer models, press and hold the START and STOP buttons simultaneously for 3 seconds. This may reset the error code if the underlying issue has been resolved. Refer to the tech sheet behind the dryer’s front panel for specific diagnostic procedures.

Follow-up Questions:

Frequently Asked Questions

•What voltage should I expect to see at the dryer outlet?

You should measure approximately 120V AC at the dryer outlet.

•How do I access the thermal fuse on my Roper dryer?

The thermal fuse is typically located on the blower housing. You will need to remove the rear access panel to access it. Disconnect power before accessing.

•What is the part number for the replacement MCU on my Roper dryer?

The part number for the replacement MCU varies depending on the specific model of your Roper dryer. Locate the model number inside the dryer door and search online appliance parts retailers or consult the manufacturer's website.

Roper Dryer Error Code PF: Power Failure Troubleshooting & Reset Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•What voltage should I expect to see at the dryer outlet?

•How do I access the thermal fuse on my Roper dryer?

•What is the part number for the replacement MCU on my Roper dryer?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: