Installation manual
                                                PCX 256 PROGRAMMING MANUAL 
RINS868-6    Page: 67 
MAINS FAIL 
xxx 
Mains supply failed  System detects mains frequency out of 
specification, as well as voltage. Note:
 'AC FAIL' 
timer operative 
FUSE x 
FAULT 
Fuse identified failed, 
OR Output protected by 
fuse drawing excessive 
current 
Fuse 1 = PGMs 
Fuse 2 = BELL 
Fuse 3 = AUX 
Fuse 4 = BATTERY 
Fuse 5 = BUS
LOW VOLTS 
xxx 
Power supply volts low 
Battery volts below normal 'battery fault' level 
during mains failure 
ENGINEER INDICATIONS 
Fault  Description  Solution 
Engineer 
Access 
Denied 
Access to Engineer menu 
NOT possible, as system is 
not fully disarmed. 
Ensure that ALL partitions are disarmed, using a 
suitable user codes / tags at appropriate keypads / 
readers. 
Check Failed 
Input xxx 
Input in fault on attempting 
to exit Engineer mode. 
Applies to 24-hour tamper, or other input types that 
would generate an alarm condition if the system 
were returned to disarmed mode. 
Also applies to tamper fault on other input types. 
Check for fault on input, or omit in programming. 
Error input 
part’ns not 
accessible 
A input has been 
programmed to a partition 
for which no arming point is 
valid to disarm. 
It would therefore be impossible to fully disarm the 
system after a tamper alarm on that input. 
Programming must be adjusted before exiting 
Engineer mode. 
Error some 
part’ns cannot 
be disarmed 
Arming points have been 
programmed such that it is 
possible to arm a partition, 
but not disarm it. 
Programming must be adjusted before exiting 
Engineer mode. 
CHAPTER 6: CONTACT INFORMATION 
Address 
Pyronix Ltd. 
Pyronix House 
Braithwell Way 
Hellaby, Rotherham 
S66 8QY, UK 
Help Line
Customer Support line (UK only): 
0845 6434 999 
(local rate) Or telephone: 01709 535225 
Opening Times
Opening hours: 7:00 AM – 7:30 PM 
Monday to Friday 
Email:
customer.support@pyronix.com 
Websites:
www.pyronix.com 
www.dd243.co.uk 
Pyronix Ltd. reserves the right to adjust specifications of this system, at any time and without notice, in the 
interests of product improvement. Pyronix Ltd. is an independent British company specialising in the 
design and manufacture of high-quality security control equipment. 










