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Whirlpool Refrigerator Error Code PO (Power Outage)

PO just means the refrigerator lost power for a while and the freezer warmed above 18°F. It’s not a broken part, just a safety alert to acknowledge.

Risk: Low

Meaning

PO shows up on Whirlpool refrigerators when the power was cut long enough for the freezer to warm past 18°F (-8°C), whether from a storm, a tripped breaker, or the fridge getting unplugged during a move. It isn’t a fault code. The display beeps three times and "Confirm" flashes until you acknowledge it, at which point PO clears and the screen returns to normal. The real question isn’t how to fix the code, it’s whether anything in the freezer thawed and refroze while the power was out.

The information provided here is a diagnostic aid and does not replace the intervention of a qualified professional.

Possible causes

No cause is certain until it has been checked on the appliance.

Very likely A power outage or breaker trip long enough for the freezer to warm past 18°F
Likely The refrigerator was unplugged and moved, then plugged back in
Possible A brief power flicker that still triggered the freezer temperature threshold

Tools needed

Refrigerator thermometer
Cooler with ice
Cloth

First checks

Press and hold the button under "Confirm" (labeled Measured Fill on French door models) to acknowledge the alert and clear PO from the display.
Check food in the freezer for signs of thawing or refreezing if the outage lasted more than a few hours.
Confirm the refrigerator is fully plugged in and the outlet has power, especially after a move or a breaker trip.

Step-by-step diagnosis

Press and hold the button under Confirm to acknowledge the alert. On French door models it is the one labelled Measured Fill.
Check the freezer with a thermometer rather than by feel. Whirlpool's threshold for this alert is 18°F, about -8°C.
Look for the real evidence of a thaw: refrozen juice pooled at the bottom of packaging, ice cream gone grainy, loose items now frozen into one block.
Anything in the fresh food section that sat above 40°F, about 4°C, for more than four hours goes in the bin. That is a food safety line rather than a judgement call.
Confirm the plug is fully seated and the outlet is live. After a move, check the cord has not been pinched behind the unit.
If PO comes back without an outage you know about, note the time of day. A repeating PO usually follows a breaker tripping under load somewhere else on the same circuit.

What not to do

Ignoring the food safety question because the code cleared. PO clearing just means you acknowledged it, not that the food inside is still good.
Assuming PO means a broken control board. Whirlpool documents it purely as a power-loss indicator, not a fault code.

When to stop

PO returns with no power interruption you can account for.
The outlet is warm to the touch or the plug is discoloured.

An error code varies by brand

The same code can have a different meaning depending on the brand and model. Always check your appliance's manual before acting.

Related guides

When to call a professional

If the simple checks turned up nothing, if the repair involves electricity, gas, or the sealed refrigerant system, or if you have any doubt at all: stop there and hand the appliance over to a qualified technician.