46THE CONTROL SYSTEM
T R O U B L E S H O O T I N G
Troubleshooting:
No Keypad Input
YES
Replace
Display Keypad.
(page 35)
If the problem
persists, replace the I/O Control Board.
(page 39)
Is the keypad cable properly connected
to the I/O Control Board?
NO
Correct wiring.
