Whirlpool refrigerator — Error Code PO

Power Outage notification indicating internal temperatures climbed above safe thresholds.

What it means

The PO code on your Whirlpool unit stands for Power Outage. It is not an indicator of a broken component; instead, it is a safety feature managed by the main control board. The alert triggers if your home loses 120V AC power and the NTC thermistors detect that the freezer warmed past 18°F (-8°C) or the fresh food section climbed above safe levels. Because the system prioritizes food safety, the display blinks PO to notify you that the contents may have thawed. This message remains active on the interface until you manually acknowledge it, regardless of whether the fridge has successfully returned to its target temperature.

Likely Causes

1

Utility Power Interruption

A momentary blackout or voltage dip from the local power grid caused the unit to lose its 120V AC supply.
2

Breaker Trip

An electrical overload or surge in your home panel caused the dedicated circuit breaker for the kitchen to trip.
3

Loose Power Connection

The power cord may have been shifted or is not pushed fully into the wall outlet, resulting in an intermittent loss of power.
4

Control Board Anomaly

In rare instances, a faulty main control board might incorrectly register a voltage drop, triggering the PO notification without an actual power loss.

How to clear / reset

To dismiss the PO alert, you must manually acknowledge it via the control interface. Tap any button on the dispenser panel to silence the flashing indicator. The screen will then display the peak temperature recorded in each zone during the outage. Tap any key again to dismiss the temperature data and return to the standard home screen. If the panel remains frozen or the PO code reappears immediately, perform a hard reset by unplugging the refrigerator for 5 minutes to discharge the capacitors, then plug it back in.

Common replacement parts

Main Control Board Varies by model $150-300

NTC Thermistor Varies by model $15-35

When to call a pro

While the PO code is usually a simple reset, contact A-Fix Service if the code persists, the display is unresponsive, or the unit fails to cool after power is restored. Power surges can occasionally harm the main control board, inverter board, or compressor. We offer a $90 diagnostic visit—waived if you proceed with the repair—to check your electrical components for surge damage. Every repair we perform comes with a 1-year parts and labor warranty.

FAQs

What is the cost to resolve the PO code?

Usually, it is free, as it just requires a manual reset. If a surge harmed the main control board, you are looking at $250 to $450 for parts and labor.

Can I fix this myself?

Yes. In the vast majority of cases, you only need to press a button on the display to clear the warning. No tools or technical disassembly are required.

Does the code go away once the fridge is cold again?

No. The PO code is a mandatory safety notification. It will blink indefinitely until you manually clear it, even after the appliance has reached its set temperature.

Is my food still safe to consume?

That depends on the duration of the outage. The display shows the highest temperature reached. If the freezer rose above 18°F or the fridge above 40°F for more than two hours, you should evaluate your perishable items for spoilage.

Will the fridge be damaged if I keep using it with the PO code flashing?

No. The refrigerator will proceed with its normal cooling cycle. However, you will be unable to use the dispenser or modify temperature settings until you clear the alert.

Need help with PO?

Our certified techs diagnose Whirlpool error codes daily. $90 diagnostic · 1-yr warranty.