Specifications

C-BUS TRAINING MANUAL - VOL 2
112
1.0 Fault Finding Chart
The intention of this Fault Finding chart is to guide the user in deducing possible installation faults.
It is not exhaustive and with experience you may be able to short cut certain areas.
Start
What is wrong?
Programming or
Communications
problem. Pg 2
Have you
checked the
output
unit?
Unit LED on
or flashing on
Output unit
Does key
input LED operate
when the key is
pressed?
Check wiring
Check wiring
Press Local Toggle
button for 2 sec. If still
flashing check C-Bus
wiring for short
circuit *1
No C-Bus power.
Check power
supplies. *2
No clock. *3
Check short circuit
between C-Bus +ve
& -ve. *1
C-Bus
LED on?
C-Bus power is low.
Either remove some
inputs or add power
supplies.
This part of the physical check appears to be correct
provided you have checked both inputs & outputs.
YES
NO
YES
NO
FLASHING
YES
NO
FLASHING
YES