Amana Refrigerator LO Error Code: Causes & Fix

What is the Amana Refrigerator LO error?#

LO on an Amana refrigerator is a low temperature alert meaning the freezer is running colder than it should — food is rock-hard, ice cream is over-frozen, and frost builds on the walls. The fastest fix is to check the temperature setting first, since a bumped or over-cold setting is the usual cause. Behind that, a drifting thermistor or, rarely, a control board fault can report or produce a too-cold freezer.

LO on a Amana Refrigerator: likely causes and repair cost#

On a Amana Refrigerator, the LO code signals: low temperature alert - freezer too cold.

Typical professional repair: up to $125 · Difficulty: easy · often owner-fixable

Fastest thing to try first: Adjust temperature setting.

Symptoms that often accompany LO: Freezer temperature display shows unusually low reading; Food is excessively frozen; Ice cream is rock-hard; Frost buildup on freezer walls

Technician diagnostic sequence for LO:

1. Adjust the freezer temperature to the recommended 0F (-18C)
2. Place a standalone thermometer in the freezer to verify actual temperature matches the display
3. If the actual temperature is normal but the alarm sounds, the thermistor may be drifting — check resistance
4. Clean the condenser coils if the unit is overcooling (coil dust can cause erratic temperature cycling)

Field note: On Amana top-freezer models, LO occasionally triggers when the freezer sensor drifts with age. Verify with an external thermometer. If the sensor reads accurately but the display is wrong, the control board needs replacement. If the sensor reads inaccurately, replace the thermistor — it is the same part used across the Whirlpool platform.

How to troubleshoot the LO error yourself#

Set the freezer back to the recommended 0°F, which is about -18°C, and give it time to settle. Place a standalone thermometer inside to verify the actual temperature matches what the display shows — this one check separates a real over-cooling problem from a sensor that is simply misreading. If the thermometer shows a normal temperature but the alarm still sounds, the thermistor is likely drifting and its resistance should be checked. If the unit is genuinely overcooling, clean the condenser coils, because coil dust can cause erratic temperature cycling. When the sensor reads accurately but the display is wrong, the control board needs replacement; when the sensor reads inaccurately, the thermistor is the part — and it is the same thermistor used across the Whirlpool platform, so it is easy to source.

Is the Amana Refrigerator LO error worth fixing?#

LO is an inexpensive code to resolve. Adjusting the setting costs nothing, and even a parts repair is capped at up to $125 per the table above — a small figure against a new refrigerator. Because the likely parts are a thermistor or, less often, a control board, and the sealed cooling system is untouched, the appliance is sound and worth keeping. I would only lean toward replacement if LO appeared on an old unit already showing more serious cooling faults.

Amana Refrigerator LO: frequently asked questions#

What does the LO error mean on a Amana Refrigerator?#

It is a low temperature alert: the freezer is colder than it should be. A too-low setting is the common cause, followed by a drifting thermistor or a control board fault.

Is it safe to keep using a Amana Refrigerator that shows the LO error?#

Yes. An over-cold freezer keeps food safe, if over-frozen. Adjust the setting and verify the sensor at your convenience.

Can I clear the LO error myself, or do I need a technician?#

Often yourself — reset the temperature to 0°F and verify with a separate thermometer. Checking or replacing the thermistor or board is a technician task.

How much does it cost to repair the LO error on a Amana Refrigerator?#

Often nothing, since it is usually a setting. A parts repair is up to $125 per the table above.

Which parts usually fail when a refrigerator throws the LO code?#

The freezer thermistor most often, and the control board less commonly. Frequently the setting is simply too low and nothing has failed.

Is a Amana Refrigerator with the LO error worth repairing?#

Yes. It is often free to correct and at most up to $125, with a cheap Whirlpool-platform thermistor if a part is needed.

Why does a temperature set too low trigger the LO error?#

If the setpoint is below the safe range, the freezer overcools past the alert threshold. The board reads the low temperature and posts LO to flag it.