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Kenmore Refrigerator Er FS / Er rS Error Code

Freezer or refrigerator temperature sensor fault on Kenmore refrigerators.

Er FS / Er rS

Moderate DIY

Er FS is the freezer's temperature sensor (a thermistor) and Er rS the one in the refrigerator section. The control is getting a reading it can't use, usually because the sensor failed or a wire or connector between it and the power control board has come loose or broken.

Compatible models

Both codes appear in the Sears PartsDirect chart for Kenmore and Kenmore Elite 795-prefix bottom-freezer refrigerators.

Also shown as

Kenmore Trio models with a 111 prefix log the same type of fault as F1 Lo or F1 Hi (freezer) and r1 Lo or r1 Hi (refrigerator). 106-prefix models show C, and 253 series French-door models show OP or SH.

Difficulty

Start with the safe checks below; a worn part may need replacing.

How to fix
When to call a pro
Parts
FAQ

Not sure you are reading the code right? See how to read Kenmore refrigerator codes.

Safety first: unplug the refrigerator (or switch off its breaker) before touching filters, hoses or panels. If you smell burning or gas, or see water near the outlet, stop and call a professional.

How to fix Kenmore Er FS / Er rS

Try one power reset
Unplug the fridge for a couple of minutes, then plug it back in. A code that reappears right away means the sensor circuit has a real fault.
Check what you can see
With the power off, look for a sensor wire inside the compartment that's been pinched by a shelf, a drawer or a heavy package. Free it and make sure its clip is seated.
Replace a sensor that tests bad
Thermistors are inexpensive parts. Testing one means checking its resistance with a meter on the unplugged fridge; if you don't own a meter, a technician can test it and fit the new one on one visit.

When to call a technician

When the sensor checks out but the code keeps returning, the wiring harness or power control board is next, and that diagnosis belongs with a technician.

Parts linked to Er FS / Er rS

These are the parts most often behind this code. Tap one to see what it does and the signs it is failing.

Order parts by your full model number so they fit.

Frequently asked questions

Which Kenmore models show the Er FS / Er rS code?

Both codes appear in the Sears PartsDirect chart for Kenmore and Kenmore Elite 795-prefix bottom-freezer refrigerators.

Can I fix Kenmore Er FS / Er rS myself?

Often. The first steps above are safe checks a homeowner can do. If they don't clear Er FS / Er rS, the cause is likely a worn part that needs replacing.

Other Kenmore refrigerator codes

Last reviewed 2026-10-21. Codes and steps can vary by model; check your owner's manual.

Sources we checked