CV-550 SPK V3 REFERENCE MANUAL
INSTALLATION INSTRUCTIONS
Page 31 of 33
6. PRECAUTIONS IN USE
•
Wiring must not be connected wrong, especially the power line, otherwise the Keypad may get permanently damaged and
not work properly.
•
Because the keypad internal relay is used for signal output, it cannot directly drive large power loads. To ensure the long-
term stable operation of the keypad, electric locks should not be connected directly with NO, NC, COM of the keypad, but
be driven by an access control power supply or through an isolation relay module (CX-IRB).
•
When you enter the management mode or change the user PIN, you must press and hold the * key for more than two
seconds to be valid.
•
To encourage security, the default admin initial password 888888 only supports the menu 00, which encourages users to
change the 6-digit admin password, or they cannot access other settings.
•
The factory default mode is the single-door mode. If you need another mode function, you must enter the appropriate
mode to have the keypad function for your application. In different modes, the management menu is also different.
7. COMMON TROUBLESHOOTING
Fault phenomenon
Possible causes
Troubleshooting
Indicator light is not working
properly
1. The gauge of power wires are too thin,
resulting in the voltage being too low.
Replace wires with higher gauge wires ≥
AWG #18.
2. Wiring connection is incorrect, or power
wires are not powered.
Wiring in the correct way.
3. Set the indicator light normal off
Set to normal mode.
Fail to enter management mode.
1. Hold the * key in front of the password
longer than 2 seconds.
Operate in the right way
2. Input wrong admin password.
Enter the correct password
3. Forget admin password.
Change by Setting card or press the #
key to initialize.
Can enter management mode, but
part of the menu is invalid.
1.can’t setting some menu in default
password, only can change admin
password.
Change Admin password.
2. The Keypad mode is incorrect, and some of
the menus are blocked.
Set to right Keypad mode
User card can’t open the door
1. Keypad will beep three times if it is not the
valid user card.
Add the user card again
2. Keypad will beep three times if the user is
disable.
Enable user.
3. One beep indicates keypad relay tripped
and wiring should be checked.
Make sure the connection is correct.
Reading card distance is too
close.
1. The power supply voltage at the keypad is
low.
Change to linear power supply or connect
the housing to the ground.
2. Part of the electrical lock interference is
too large.
Choose the qualified lock or parallel
connect a 470uF/25V electrolytic
capacitor at the two ends of the lock
