Checking Functions; Fault-Finding Gude - CENTURION SYSTEMS INTERCOM HANDSET Installation Manual

SECTION 8

7.2. Checking Functions

Press the Gate/Door Release pushbutton on each HANDSET and check that the Gate/Door
adjacent to each entry panel operates correctly.
8. Fault-finding Guide
At each HANDSET press the pushbutton to call the handsets in the other group.
•
Make sure that these handsets ring and that there is communication
At each HANDSET check the operation of both the auxiliary pushbutton and the status
•
LED if being used
• Replace all covers
• If doing the installation for a client it is recommend when handing over to explain
carefully the operation and full functions of the system
Problem
Lights off on Entry Panel
Entry Panel howling when
active
Entry Panel relay not
triggering when Gate Button
is pressed on HANDSET
HANDSET not ringing when
called
No speech when HANDSET is
lifted
Possible Cause and Solutions
• Check polarity of power supply wires
• Check polarity of two wire bus
• Check supply voltage
• Check two wire bus voltage at Entry Panel
• Reduce volume on Entry Panel
• Check the correct Group (A or B) is
selected on the Entry Panel
• Check the bus voltage at the Entry Panel
• Check polarity of two wire bus
• Check two wire bus voltage at the
HANDSET Check supply voltage
• Check coil cord connection.
• Check that correct Group (A or B) is
selected on the HANDSET
• Increase volume on the HANDSET
• Check coil cord connection to cradle.
• Check the hook switch is free to move
page 27
FAULT FINDING GUIDE
TABLE 3
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