Whirlpool Dryer Error Code F73/F75/F78 — Main PCB EEPROM Error
What this means
The F73, F75, and F78 error codes on Whirlpool dryers indicate the main printed circuit board (PCB) has detected invalid EEPROM communication. The EEPROM chip stores the dryer's configuration data, cycle parameters, and calibration settings. When this data becomes corrupted or unreadable, the dryer cannot operate. These codes typically appear after a severe power surge or when the EEPROM chip itself has degraded.
Alternate codes: F75, F78
Step-by-step fix
3 stepsPower cycle the dryer
Unplug the dryer for at least 10 minutes. Restore power and check if the error clears.
In rare cases, a longer reset (30 minutes unplugged) can resolve EEPROM read errors.
Inspect the control board
Unplug the dryer. Access the main control board and inspect for any visible damage — burned components, cracked solder joints, or discolored areas near the EEPROM chip.
The EEPROM chip is a small 8-pin IC on the board — look for discoloration or swelling around it.
Replace the main control board
EEPROM failures require board replacement, as the chip cannot be reprogrammed without specialized equipment. Replace the entire main control board.
Install a surge protector to prevent future EEPROM damage from power events.
When to call a professional
EEPROM errors are not user-serviceable beyond board replacement. If you're unsure about replacing the board yourself, a technician can handle it quickly.
Related error codes
Information compiled from manufacturer service manuals, official troubleshooting documentation, and appliance repair industry resources. This guide is for informational purposes only — always consult a qualified technician for complex repairs.
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