Does not execute call.
NOTE: The green LED should
light up every time a key is
pressed if the street panel has a
telephone number pad.
If a direct current door opener has been installed, check the NO cables and – (GND) door opener
connection, and that bushing insulators +12 and C are connected with a cable. In the case of these
cables being correctly installed and in a good state, then the breakdown could be located in the door
opener itself. Check that the installed door opener complies with the system’s specifications:
Voltage: 12Vdc
Maximum current: 400mA
If all that outlined above is correct, verify that the audio control unit is generating voltage of +12Vdc
between bushing insulators +12 and – (GND) with the cables disconnected. If metering is correct, verify
that there is 12Vdc between bushing insulators NO and – (GND) when the door is to be opened from
a housing unit. If these voltages are not correct, then the audio control unit might be broken.
If an alternating current door opener has been installed, check the connections between the
audio unit, F1318 source and the door opener, the same according to the schematic found in point 4.9
of this Guide. Verify that the alternating current door opener complies with the following specifications:
Voltage: 12Vac
Maximum current: 1A
Check the state and connection of the straps that join the different street panel units: Audio control unit,
push button units. Revise the connections in the street panel.
Verify that a characteristic relay sound is heard when each call is made. If this is not the case, check
each push button unit in separate fashion to locate the one that is broken. If none produce the mentioned
sound, then the audio control unit might be broken.
Revise the configuration of the monitor’s or telephone’s micro-switches and configuration of the street
panel. Make sure that two of the monitors or telephones do not have the same configuration (dwelling
num.).
Check voltage between cables 1M, 2M (ground) and 3M in the street panel and in the dwellings:
1M – 2M = 17Vdc
3M – 2M = 17Vdc
Depending on the result of these measurements, then the following cases may arise:
• Voltage is correct in the street panel but not in the dwellings. Check that the cable sections that are
used are appropriate for the installation.
• Voltage is correct in both the street panel and in the dwellings. Disconnect cables 1M, 2M and 3M
from the audio control unit and once again check the voltage in the bushing insulators themselves.
If voltage continues to be incorrect, then the audio control unit might be broken. If voltage is correct
in the audio control unit’s bushing insulators, but the measurement varies when the cables are
connected, then revise connection of the cables in the dwellings and splices of the installation in
order to discard cable crossing or short-circuits. We recommend that the installation be disconnected
per spans until the problem is located.
