BF Apartment Station Digital Entry System
PD
–166 Issue 1
Installation and Operating Manual
Page 27 of 48
Troubleshooting
Common Faults
A very high percentage of calls to our technical support number, regarding new
installations, are resolved to faulty wiring. The reasons for these are various: -
Broken cores, especially short links, sometimes broken inside the insulation!
Connectors clamped onto the insulation instead of copper.
Wire in the wrong side of a rising clamp connection, the clamps need to be unscrewed
far enough to stop the wire going “underneath”.
Shorts or opens due to cables having been stapled or nailed through.
A common fault is wiring a connector left to right instead of right to left, or one or more
twisted pairs the wrong way round.
Tip
. The heads of screws on connectors are not a reliable means of making a connection
with a meter, try pushing the probe into the wire entry point.
Quick Fault Reference
These tables provide a quick indication of the possible fault.
Panel Display Problems
No display
No power at display, check for a minimum of 10V.
To test display, cycle the power on BFD-DIG and check
for both version numbers
displayed. “BDV1” then “V4.0”
Display indicates “F 1 – –”
“D” connection open circuit.
Display indicates “F 2 – –”
“D” connection: no data received.
“D” connection shorted to 0V
Display indicates Fail
Apartment number entered was called but did not
respond. In a large system with BSSW controller, the
panel at the gate displays Fail when the block with that
apartment number is Busy.
Otherwise see Call Problems below.
Power Problems
Apartment station resetting
(The three indicators lights
show the power on sequence).
Power supply intermittent short or overload.
More than 1 extension enabled for auto display.
Lock output short-
circuit; see „Lock Problems‟
28V LED does not light on
controller.
Temporarily remove connection to 28V+ output. If it
now comes on there is a short on the apartment
station wiring.
12V input connections are reversed or missing.
PS4 output voltage fluctuating,
meter reading unstable.
Output overload is causing current limit to operate;
check allocation of controllers to power supplies, see
page 10 for details.
See Lock Problems below.