This guide explains the Jenn-Air Freezer Co Error: what it means, what causes it, and how to resolve it safely.
This guide explains the Jenn-Air Co Error 2: what it means, what causes it, and how to resolve it safely.
Understanding the Jenn-Air Freezer Co Error
Below, our specialists break down everything you need to know about the Jenn-Air Freezer Co Error.
Understanding the Jenn-Air Co Error 2
Below, our specialists break down everything you need to know about the Jenn-Air Co Error 2.
What CO means on your Jenn-Air freezer
A Jenn-Air CO error signals that a safety device — the overload protector — has cut power to the compressor because it detected excessive current draw. This is a protective shutdown, not a random glitch: something is forcing the compressor to work harder than it should, whether that’s restricted airflow around dirty coils, a failing electrical start component, or degrading motor windings.
The overload will reset on its own once the compressor cools, which is why the freezer often seems to work again briefly before the code returns — that cycling pattern itself is a useful clue that the underlying cause hasn’t been addressed.
Symptoms
- CO code on the display, sometimes clearing and returning repeatedly
- Compressor running for a short time, shutting off, then a pause before it tries again
- Excessive heat felt near the compressor housing
- Reduced cooling despite the compressor apparently trying to run
Common causes
- Heavily clogged condenser coils — dust buildup forces the compressor to work harder and pull more current than normal.
- Failed start relay or capacitor — a bad start component causes the compressor to draw locked-rotor amperage every attempt.
- Degrading compressor windings — internal motor wear increases current draw past the overload’s threshold.
Troubleshooting steps you can try
- Thoroughly clean the condenser coils. Unplug the unit and use a brush or vacuum attachment to remove all dust from the coils, usually accessible behind the bottom grille or rear panel on column-style freezers.
- Give the compressor real cooldown time. Leave the unit unplugged for at least 30 minutes so the overload protector has a chance to fully reset before trying again — a shorter wait may not be enough.
When to call a technician
If cleaning the coils doesn’t stop the cycling, and a burned or rattling start relay or abnormal winding resistance is found, the fix requires electrical component replacement. schedule a service visit so a specialist technician can load-test the compressor and start components rather than continuing to reset a unit that’s drawing dangerous current. Related codes are covered at our full Jenn-Air error code library, and jennair.com has model specifications.
