A221_F: Configuration Data Restore Failure
Status
This is a critical fault and should rarely (if ever) be seen in the field.
Description
This fault indicates the EEPROM in the control is corrupted. No operation is allowed.
Expected Operation
Alarm "A221_F Configuration Data Restore Failure" is declared. No operation can be allowed.
Cause
Faulty control board.
Solution
Replace furnace control board.
