GE Monogram ZDP486ND Technical Service Manual page 73

After completing the component sequence, pressing
the Timer button scrolls through these available
displays.
1st press displays ROM revision
2nd press displays EEPROM checksum
3rd press displays Probe temperature
4th press displays oven temperature
5th press displays all red LED segments
6th press displays all green LED segments
7th press displays EEPROM programming
8th press displays F-Codes
Note: 7 fault codes are stored in memory
Note: 6 communication faults are stored
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