mypros+
Error code reference

Kenmore Refrigerator Error Code R4 R5

Freezer fan motor is locked.

Kenmore codesKenmore refrigerator codes

Freezer fan motor is locked.

First step from the service manual

Check if something is locking the F-FAN

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

MyPros+ Max

Get the full diagnostic procedure for R4 R5.

  • Step-by-step tests with expected resistance, voltage, and continuity values
  • Wiring diagram references and connector pinouts from the OEM service manual
  • Verified part numbers when replacement is required
Get the full procedure

$29/month · Cancel anytime · Or $9.95 3-day pass

What R4 R5 means on a Kenmore refrigerator

The R4 R5 error code on a Kenmore refrigerator indicates that the freezer evaporator fan motor (F-FAN) has become locked, meaning the motor is receiving power but is unable to rotate. The freezer fan is responsible for circulating air across the evaporator coils and distributing cold air throughout the freezer and fresh food compartments. When the control board detects that the fan motor is not spinning despite being energized, it triggers this fault code to alert the technician or user to a mechanical or electrical failure in the fan circuit.

The most immediate diagnostic step is a physical inspection to determine whether something is mechanically obstructing the fan blade. Ice buildup around the evaporator assembly is a frequent cause, especially if the defrost system has been underperforming. Foreign objects, packaging debris, or frost accumulation can wedge against the fan blade and prevent rotation entirely. If no visible obstruction is found, the fault may lie within the fan motor itself, where worn bearings or a seized rotor can cause the motor to lock under load.

If the fan blade spins freely by hand but the motor still will not run, the motor windings or the wiring harness connecting the motor to the control board should be inspected. A failed motor will typically need to be replaced. The control board itself can also be a factor if it is not supplying the correct voltage to the fan motor, though this is a less common cause compared to ice obstructions and motor failure.

Source: manufacturer service documentation.

Common causes of R4 R5

  1. 01

    Ice or frost blocking the fan blade

    Wiring / connection

    Ice buildup around the evaporator can physically lock the fan blade in place. This is the first thing to check and can often be confirmed by opening the freezer panel and visually inspecting the fan area for frost accumulation.

  2. 02

    Failed freezer fan motor

    Part replacement

    The fan motor itself may have seized due to worn bearings or a failed rotor. If the blade spins freely by hand but the motor will not run when energized, the motor needs to be replaced.

  3. 03

    Foreign object obstructing the fan blade

    Wiring / connection

    Packaging material, food debris, or other objects can get pulled into the fan area and jam the blade. A visual inspection of the fan compartment will reveal any physical obstruction.

  4. 04

    Damaged or open wiring harness

    Part replacement

    A broken wire or loose connector in the harness between the control board and the fan motor can interrupt power delivery, causing the motor to appear locked. Inspect the harness for visible damage, pinching, or disconnected terminals.

  5. 05

    Control board not supplying correct voltage to fan

    Part replacement

    If the control board is faulty, it may fail to deliver proper voltage to the fan motor circuit even though no mechanical obstruction exists. This is the least common cause and should be diagnosed only after ruling out the fan motor and wiring.

See the test procedure for each cause

Frequently asked questions about R4 R5

What does R4 R5 mean on a Kenmore refrigerator?
The R4 R5 code means the freezer evaporator fan motor is locked and unable to spin. The control board detected that the fan is not rotating when it should be. This fan circulates cold air through the freezer and refrigerator compartments, so the issue needs to be addressed promptly to maintain proper temperatures.
How do I fix the R4 R5 error on my Kenmore refrigerator?
Start by checking whether ice buildup or a foreign object is physically blocking the freezer fan blade. If the fan area is clear, inspect the fan motor by turning the blade by hand to see if it rotates freely. A motor that spins freely by hand but still will not run electrically will need to be replaced. Also check the wiring harness connecting the motor to the control board for any damage or loose connections.
Is it safe to keep using my refrigerator when R4 R5 is displayed?
Continued use is not recommended. Without a functioning freezer fan, cold air cannot circulate properly, and both the freezer and fresh food compartments will begin to warm up. Food safety can be compromised quickly, and running the compressor without adequate airflow can also put additional strain on other components.
Will resetting my Kenmore refrigerator clear the R4 R5 code?
A reset may temporarily clear the code, but the error will return if the underlying cause has not been corrected. The control board will continue to monitor the fan motor and will re-trigger the fault as soon as it detects the locked condition again. The root cause, whether ice, a failed motor, or a wiring issue, must be resolved first.
How much does it cost to repair the R4 R5 error on a Kenmore refrigerator?
If the problem is only ice buildup, the repair may cost nothing beyond your time. A replacement freezer evaporator fan motor typically costs between $20 and $80 for the part, plus labor if you hire a technician, which can bring the total to roughly $100 to $250 depending on your area and service rates. Wiring repairs or a control board replacement would fall on the higher end of that range.

Related Kenmore refrigerator codes

All Kenmore refrigerator codes
View all 146 Kenmore refrigerator codes

78,000+ service manuals · 160,000+ error codes · 55+ brands

Get Started

$29/month · Cancel anytime · Or $9.95 3-day pass