Roper Refrigerator Error Code PO: Power Outage Message... | appliancefaults.com

Technical Background:

The MCU (Main Control Unit) in the refrigerator monitors the incoming voltage. If the voltage drops below a certain threshold or is interrupted completely, the MCU logs a 'PO' error code. The code might remain even after power is restored, requiring a reset.

Symptoms:

The Roper refrigerator displays the error code 'PO' on the control panel. The refrigerator may or may not be cooling. The code typically indicates a detected power outage or interruption.

Possible Causes:

Brief power interruption.
Prolonged power outage.
Loose wiring connection at the outlet or refrigerator.
Faulty main control board (MCU).
Surge event that corrupted the MCU's memory.

Solution:

1

Verify the refrigerator is properly plugged into a functioning 120V AC outlet using a multimeter.
2

Check the breaker panel for tripped breakers. Reset if necessary.
3

Unplug the refrigerator for at least 5 minutes to attempt a hard reset of the MCU.
4

After plugging the refrigerator back in, observe if the PO error code reappears. If it does, proceed.
5

Access the main control board (MCU) usually located behind the back panel. Use a 1/4-inch nut driver.
6

Inspect wiring connections to the MCU for looseness or corrosion. Reseat or clean as needed.
7

If the problem persists, the MCU may be faulty and require replacement. Consult a qualified appliance repair technician.

Safety Warning:

Disconnect power to the refrigerator at the breaker panel before performing any repairs. Follow Lock Out Tag Out (LOTO) procedures to prevent accidental power-up. High voltage is present in the appliance; exercise caution.

Prevention:

Use a surge protector to protect the refrigerator from voltage spikes. Periodically check the outlet and wiring connections for tightness.

Expert Tip:

Some Roper refrigerators have a service mode. Press and hold the 'Door Alarm' and 'Freezer Temp Down' buttons simultaneously for 5 seconds to enter service mode. Navigate to the error history to clear the PO code if possible.

Frequently Asked Questions

•How do I test the outlet voltage?

Use a multimeter set to AC voltage. Place the probes into the outlet slots, ensuring the black probe is in the neutral slot (wider slot) and the red probe is in the hot slot (narrower slot). You should read approximately 120V AC.

•Where is the main control board located?

The main control board is typically located behind an access panel at the rear of the refrigerator, near the bottom. You may need to remove a cardboard or metal panel to access it. Disconnect power before accessing.

•How much does it cost to replace the MCU?

The cost of a replacement MCU varies depending on the model of your refrigerator. Expect to pay between $150 and $300 for the part, plus labor if you hire a technician.

Roper Refrigerator Error Code PO: Power Outage Message Reset Guide

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip:

Frequently Asked Questions

•How do I test the outlet voltage?

•Where is the main control board located?

•How much does it cost to replace the MCU?

Related questions

Technical Background:

Symptoms:

Possible Causes:

Solution:

Safety Warning:

Prevention:

Expert Tip: