Installation manual
SECTION 5 TROUBLESHOOTING
Troubleshooting Kit
When installing Comfort or attending to problems on site, it is advisable
to have the following tools in the tool kit:
1 Multimeter for checking continuity and resistance.
2 A hands free telephone for checking telephone voice menu operation
3 12V Test lamps for checking outputs
4 Default programmed U4 Non-volatile Memory (NVM) chips, in case
certain settings have been corrupted or wrongly programmed.
5 Infrared LED with 100-ohm resistor wired up a long cable and
terminated in terminal block. This can be connected directly to the
output to check transmission of Infrared signals to remote-controlled
appliances
Red/Green LEDs Initialisation Sequence Wrong
When power is first applied or the Reset button is pressed, the system
goes through a self-test sequence. Observe the red and green leds on
the Comfort panel (not the Keypads). The correct sequence should be:
1 Both Leds turn on
2 The Red LED goes off after 1 second, with the green LED remaining on
3 The Green LED turns off after 5 seconds and immediately comes on
again
4 The Keypads announce “Security Off”
If the above sequence does not happen, check the following:
The Red and Green Leds do not come on after Power Up
There may be a problem with the U1 Chip. Replacing U1 may fix the
problem
The Green LED remains on after 5 seconds, i.e. does not blink
The Voice System may be faulty or the Voice Chip U7 may not be
programmed correctly. Using a Voice Programmer Board to program U7
may fix the problem
The Red and Green LEDS both come on after 5 seconds:
The U4 Non-volatile memory (NVM) is the wrong version or may not be
the right format. Changing the U4 to a default-programmed U4 of the
correct version will clear the problem. Downloading default settings or
a valid file from CS-Xpress and pressing the RESET button may also fix
the problem.
Comfort Installation Manual
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