Maytag · Refrigerator
Maytag Refrigerator Error Code 24
Defrost thermostat open during defrost
What this error means
Code 24 means the defrost thermostat did not close when the heater energized. The board interprets this as a failed defrost temperature path.
How 24 is detected
Maytag refrigerator models lock the door or lid before energizing fill, heat, or high-speed spin. 24 means the latch switch never sent a "locked" signal to the main control, or the lock motor did not complete its travel. On Maytag MFI2570FEZ, Maytag MFF2055FRZ, and similar variants, clothing caught in the gasket, a misaligned strike, or a failed latch assembly are the most common mechanical causes—not the board itself.
Inspect the door gasket perimeter and strike alignment before replacing the latch. Defrost thermostat stuck open from age is reported frequently on this code. After correcting mechanical issues, locate the round bimetal thermostat clipped to the evaporator. If the latch clicks but 24 persists, the door lock switch or wiring harness to the control board likely needs testing with a multimeter.
Do not force the door open during an active cycle; wait for the lock to release when the board de-energizes the lock motor—usually two to three minutes after canceling power on most Maytag units.
Common causes
- Defrost thermostat stuck open from age
- Poor contact at the thermostat clamp on the coil
- Thermostat wire broken at the evaporator bend
- Control board not sending heat long enough to close the stat
Step-by-step fixes
- 1Locate the round bimetal thermostat clipped to the evaporator
- 2Test for continuity at freezer temperature—should open near 50°F
- 3Reseat the harness at the thermostat
- 4Force a manual defrost through service mode if supported
When to call a technician
Replace the defrost thermostat W10384183 family part when it never closes during a forced defrost.
Affected models
- Maytag MFI2570FEZ
- Maytag MFF2055FRZ
- Maytag MSS25C4MGW
Prevention & maintenance
- Wipe the door gasket weekly and avoid overloading items against the seal—24 often starts as a slow leak or latch misalignment.
- Record when 24 appears in the cycle and whether it clears after a 60-second power reset on your Maytag refrigerator—that detail speeds diagnosis if you call service.
- Keep the model and serial number from the rating plate when ordering parts for 24; Maytag uses multiple revisions with different harness lengths and board firmware.
- Photograph wiring connector orientation before disconnecting any component while troubleshooting 24; reversed plugs on pumps and valves cause immediate repeat faults.