User manual
VI. SERVICE DISPLAY 
The following message will be displayed periodically if the security system requires 
service. Call your service provider promptly if this message is observed. 
Service Required 
Type r2 for help
If you see this display, press r 2  One or more of the following fault messages 
will be displayed.  Use the scroll keys • – to browse through them. To exit 
the service messages, press [#]-[#]. 
Control 
Box tamper
(Optional) The Box Tamper circuit has 
activated. 
Control 
Fail to Comm.
The control attempted to communicate 
a message to the Central Station, but 
was unsuccessful. 
Control 
Ground fault
A short to ground has been detected on 
a control circuit. 
Control 
Loss of time
Your system has lost total power and 
needs the clock reset. 
Control 
Low Battery
The standby battery is low. 
Control 
Over-current
A short circuit of a control’s power 
supply has occurred. 
Control 
Phone trouble
The phone line connected to the control 
is not operating properly. 
Control 
Power trouble
The main power to your system is not 
on. 
Control 
Siren trouble
Open circuit has occurred on the bell or 
siren circuit. 
Expansion 
Aux. comm. fail
An auxiliary reporting device has failed 
to communicate. 
Hills LCD Keypad 
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