Access System Programming mode by one of the below methods
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Enter the keypad programming code at the keypad.
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Hold the S1 switch down on the 7100 circuit board.
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Short the program contacts on the DS7090 control board for two seconds.
While display reads "System Program" hold the A and 1 keys for 2 seconds. The display reads "Default EEPROM" while the keypad is defaulted.