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Error code reference

Jenn-Air Refrigerator Error Code F3E1

RC (Refrigerator Compartment) Thermistor is not working correctly

Jenn-Air codesJenn-Air refrigerator codes

RC (Refrigerator Compartment) Thermistor is not working correctly — open or shorted.

First step from the service manual

Check product temperature, ensure airflow is not restricted by damper, check for loading issues, run Test 01 mode on RC Thermistor to see if it shows temperature, Open, or Short.

The complete diagnostic procedure includes additional test steps, resistance specifications, wiring diagram references, and component test points.

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What F3E1 means on a Jenn-Air refrigerator

The F3E1 error code on a Jenn-Air refrigerator indicates a fault with the RC (Refrigerator Compartment) thermistor. This thermistor is a temperature-sensing resistor responsible for monitoring the air temperature inside the fresh food section and communicating that data to the control board. When the control board detects a reading outside the expected resistance range, it flags the thermistor as either open (no continuity, infinite resistance) or shorted (resistance collapsed to near zero). In either condition, the control board cannot accurately regulate cooling in the refrigerator compartment.

A thermistor failure can stem from a few different sources. The sensor itself may have degraded or failed outright, or the wiring harness connecting it to the control board may have a break, corrosion, or a pinched wire causing an open or short circuit. It is also worth noting that restricted airflow from a stuck or failed damper can create temperature swings that sometimes mimic a sensor fault, which is why the first diagnostic step involves confirming the damper is operating freely and checking for improper food loading that could block airflow.

To properly diagnose F3E1, technicians should run Test 01 mode, which directly queries the RC thermistor and displays the current reading as a temperature value, Open, or Short. A reading of Open or Short during this test confirms the thermistor or its circuit is the root cause. If the test returns a valid temperature, the issue may be intermittent or related to product load and airflow rather than a failed sensor component.

Source: manufacturer service documentation.

Common causes of F3E1

  1. 01

    Failed RC Thermistor

    Part replacement

    The thermistor itself has failed internally, producing either an open or shorted resistance reading. Running Test 01 mode will confirm this if the display shows Open or Short instead of a temperature value.

  2. 02

    Damaged or Disconnected Wiring Harness

    Wiring / connection

    A broken wire, loose connector, or corroded terminal between the thermistor and the control board can create an open or short circuit without the sensor itself being faulty. Inspect the harness along its full length for visible damage or poor connections.

  3. 03

    Stuck or Failed Damper Restricting Airflow

    Wiring / connection

    If the damper controlling airflow into the refrigerator compartment is stuck closed or open, temperature readings can become erratic and trigger a thermistor fault code. Check that the damper moves freely and is not obstructed.

  4. 04

    Improper Food Loading Blocking Airflow

    Wiring / connection

    Overpacking the refrigerator compartment or blocking the air vents with food items can cause temperature irregularities that stress the thermistor circuit. Verify that vents are clear and the compartment is not overloaded.

  5. 05

    Control Board Communication Fault

    Part replacement

    In less common cases, the main control board may fail to correctly read a properly functioning thermistor signal. This is typically diagnosed after confirming the thermistor and wiring are both good.

See the test procedure for each cause

Frequently asked questions about F3E1

What does F3E1 mean on a Jenn-Air refrigerator?
F3E1 indicates that the Refrigerator Compartment (RC) thermistor is not working correctly. The control board has detected that the sensor is either open (no signal) or shorted (collapsed signal), meaning it cannot accurately read the temperature inside the fresh food section. This can affect the refrigerator's ability to maintain proper cooling. A diagnostic test mode can confirm whether the sensor itself or the wiring circuit is the source of the fault.
Can I fix the F3E1 error myself on a Jenn-Air refrigerator?
Some causes of F3E1 can be addressed without professional help, such as clearing blocked air vents, reorganizing food to improve airflow, or checking that the damper is not obstructed. However, replacing the thermistor or diagnosing a wiring harness fault requires comfort working with appliance wiring and running the built-in Test 01 diagnostic mode. If you are not confident in those steps, a technician visit is recommended.
Will resetting my Jenn-Air refrigerator clear the F3E1 error code?
A power reset may temporarily clear the F3E1 code, but if the thermistor or its wiring circuit is genuinely faulty, the code will return once the control board re-evaluates the sensor. Clearing the code without addressing the underlying fault does not resolve the problem and may allow cooling performance to degrade further. Running Test 01 mode is the proper step to determine whether the fault is active.
Is it safe to keep using my refrigerator when F3E1 is displayed?
F3E1 means the control board cannot reliably monitor the temperature in the fresh food compartment. If the sensor fault is active, the refrigerator may not maintain safe food storage temperatures, putting perishables at risk. It is advisable to check the actual compartment temperature with a separate thermometer and address the fault promptly rather than continuing to use the appliance without a working temperature sensor.
How much does it cost to repair a Jenn-Air refrigerator F3E1 error?
Repair costs vary depending on the root cause. If the fix is simply clearing an airflow obstruction or reseating a connector, there may be no parts cost beyond a service call fee, which typically ranges from $75 to $150. Replacing the RC thermistor itself is generally an affordable repair, with parts often falling in the $20 to $60 range plus labor. If the control board is involved, costs can rise significantly, often ranging from $200 to $400 or more including parts and labor.

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