KitchenAid Washer F24 Error: Water Temperature Sensor
What Does KitchenAid Washer Error Code F24 Mean? F24 on a KitchenAid washer indicates the water temperature sensor is reading out of range. The washer uses an NTC thermistor to monitor inlet water temperature and to control any internal heating element. When the sensor returns invalid values — infinite resistance, zero resistance, or a reading […]
Quick Assessment
Answer to continue safely
Is it safe to keep using?
Maybe. Cold-water cycles are safe to use. Hot-water cycles are disabled by the fault and should not be attempted until service.
Can I reset the code?
No. A power cycle does not repair a failed sensor, broken wire, or bad board input. F24 returns on the next hot-cycle attempt.
When to stop immediately?
Stop if you notice: F24 appears on cold cycles as well, Water leakage around the thermistor mounting point.
Symptoms You May Notice
Wash cycle halts with F24 displayed
Cycles stop at the point where the board attempts to heat water or verify inlet temperature. The panel shows F24 and further action is blocked.
Cold washes complete but hot cycles fail
Wash cycles that do not require temperature verification (cold/cold) may complete, but any cycle with heated water fails with F24.
Heater does not activate even on hot settings
On models with an internal water heater, you can hear the fill complete but the heater does not run and the cycle times out with F24.
Possible Causes
Water temperature thermistor (NTC) failed
The NTC thermistor inside the washer has failed open, shorted, or drifted out of specification. Typically after years of hot water exposure and thermal cycling.
Requires ProfessionalThermistor wiring harness broken
The wiring between the thermistor and main control board has broken or developed intermittent contact, particularly at harness flex points.
Requires ProfessionalControl board thermistor input circuit
The analog input on the main control board that reads the thermistor has failed, producing invalid readings regardless of sensor condition.
Requires ProfessionalSafe Checks You Can Do
-
1
Use cold-water cycles as a workaround
Until service is completed, select cold-water wash cycles that do not require temperature verification. These typically run normally even with F24 on hot cycles.
Cold washes are effective for most loads when used with a detergent formulated for cold-water performance. The washer is fully functional for these cycles.
-
2
Schedule service for hot-cycle restoration
F24 is a professional service call for full restoration. Note for the technician which specific cycles fail and whether the symptom is consistent or intermittent — this helps isolate the fault between sensor, wiring, and board.
Intermittent F24 that only appears on some hot cycles points at a marginal thermistor; consistent F24 on every hot attempt is more likely a hard failure.
When to Call a Professional
Contact a qualified technician if:
- Thermistor replacement clears the fault
- Sensor harness continuity fails at the control board
- Control board analog input tested bad with a known-good sensor
Need Professional Help?
Find qualified technicians in your area for proper diagnostics and repair.
Washer Repair Service Schedule Appointment