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Common Keypad Displays
Listed below are several keypad messages you may see on the display. Follow the instructions in the Possible Solutions column to
correct the problem. In many cases, you need to call a service person to correct the problem. Displays not discussed here indicate
your service representative should be called.
Tone at
Message
Keypad
INVALID CODE
No
CLOSING TIME
Yes
AC TROUBLE
Yes
BATTERY TROUBLE
Yes
SYSTEM TROUBLE or
Yes
SERVICE REQUIRED
SYSTEM BUSY
No
4-WIRE BUS TROUBLE
No
TRANSMIT FAIL
Yes
770
NON-POLLED ADDRESS
Keypad
WIRELESS TROUBLE
Yes
42
Meaning
The user code you entered is not recognized by the system.
The schedule has expired but the system has not been armed.
The system is not getting proper power.
The battery is either low or missing.
There is a problem with one or more components in the system.
The system is performing another task with a higher priority.
There is not a supervised device on the bus.
The voltage is low or there is an open yellow wire.
Two devices share the same address.
The panel has attempted to communicate with the central
station ten times and has not succeeded.
Keypad is set to an invalid address.
The panel is unable to communicate with the wireless receiver.
The wireless receiver is missing.
Check the user code and try again.
Users still on the premises are reminded to arm the system or
extend the schedule to a later time.
Contact your service person if other electrical devices in your home
are working.
Contact your service person.
Contact your service person.
Wait a few moments for the system to complete the task.
Contact your service person if the problem remains.
Contact your service person.
Make sure your telephone line is working properly.
Contact your service person if the problem remains.
Contact your service person.
Verify the receiver is properly connected to the panel.
Verify the correct House Code is programmed in System Options.
XR20 User's Guide
Possible Solutions
Appendix
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