User Code accepted, but bolt doesn't move. Cause: Dead solenoid driver transistor (common in early ProTec 6100 revisions). Fix: Open with key, replace logic board (part no. 6100-PCB).
Keypad beeps but no green/red LED. Cause: User code length mismatch (e.g., expecting 5 digits but you stored 6). Fix: Reset code via Master Code, ensure you press # after entry. 7. Technical Memory Map (for reference) From reverse-engineered firmware (common to Chinese ZK-series lock modules used in 6100):
Protec 6100 User Code <360p>
User Code accepted, but bolt doesn't move. Cause: Dead solenoid driver transistor (common in early ProTec 6100 revisions). Fix: Open with key, replace logic board (part no. 6100-PCB).
Keypad beeps but no green/red LED. Cause: User code length mismatch (e.g., expecting 5 digits but you stored 6). Fix: Reset code via Master Code, ensure you press # after entry. 7. Technical Memory Map (for reference) From reverse-engineered firmware (common to Chinese ZK-series lock modules used in 6100):
