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HBL/HBN 7 FAULT CODE DEFINITIONS
AND BASIC TROUBLESHOOTING
HINT: After a latch fault, due to any hardware problem, the control can disable one cavity and
prevent the opposite one to work in self-clean. First remove the fault cause, then after a latch auto-
test at power-up, if either cavities or clean mode are still inhibited, press and hold the [Start] key for
one minute until F121 is displayed, then press [Cancel].
Generally, to cancel a persistent fault, press and hold the [Start] key for one minute until F121 is
displayed, then press [Cancel].
HINT: Sometimes at power-up, the F155 fault code is displayed. Press [Cancel] key to reset the
alarm. If F155 is displayed again when starting a cooking mode, it means that parameters are
corrupted in the Display Board and the EEPROM needs to be re-programmed. Otherwise, the oven
will work correctly.
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