Specifications
www.pulsar.pl          PowerSecurity       
23 
APPENDIX C – FAILURE CODES OF THE EN54 27,6V POWER SUPPLY 
Failure 
code 
Information 
Technical 
output 
activation 
Causes, comments 
F01 
No AC power! 
EPS FLT 
ALARM 
- No AC mains supply 
- F
MAIN
 fuse failure 
F02 
AUX1 fuse! 
PSU FLT 
ALARM 
- Blown F
AUX1
 fuse 
AUX2 fuse! 
- Blown F
AUX2
 fuse 
F03 
BAT fuse! 
APS FLT 
ALARM 
- Blown F
BAT 
fuse 
- Short circuit in the battery circuit 
- Short circuit in the AUX1 and AUX2 output 
circuit 
F04 
Output overload!! 
PSU FLT 
ALARM 
- PSU overload 
F05 
Undercharged battery! 
APS FLT 
ALARM 
- Worn out batteries 
- Undercharged batteries 
F06 
High AUX1 voltage! 
PSU FLT 
ALARM 
- The output voltage of the PSU over 29.2V 
High AUX2 voltage! 
F08 
Battery charging circuit 
failure! 
PSU FLT 
ALARM 
- The output voltage of the PSU set too low , 
below 26V 
- Battery charging circuit failure 
F09 
Low AUX1 voltage! 
PSU FLT 
ALARM 
- The output voltage below 26V 
Low AUX2 voltage! 
F10 
Low battery voltage! 
APS FLT 
ALARM 
- The battery voltage has dropped below 23V 
(during battery-assisted operation) 
F11 
Low battery voltage – 
off! 
APS FLT 
ALARM 
- the battery voltage has dropped below 20V 
(during battery-assisted operation) 
F12 
EXT external input! 
ALARM 
- Activation of the input of collective failure: 
EXTi 
F14 
Temperature sensor 
failure! 
PSU FLT 
ALARM 
- Temperature sensor failure 
- Temperature sensor disconnected 
F15 
High battery 
temperature 
PSU FLT 
ALARM 
- Too high ambient temperature of the PSU. 
- Overloaded batteries. 
- Faulty batteries. 
F16 
No battery! 
APS FLT 
ALARM 
- Disconnected batteries 
F17 
Battery failure! 
APS FLT 
ALARM 
- Deeply discharged batteries, voltage below 
20V 
F18 
High resistance of the. 
Battery circuit! 
APS FLT 
ALARM 
- Worn out batteries 
- Loose cables connecting the batteries 
F19 
High AC voltage! 
PSU FLT 
ALARM 
- Mains supply over 254V AC 
F20 
Low AC voltage! 
PSU FLT 
ALARM 
- Mains supply below 195V AC 
F21 
Enclosure opening! 
PSU FLT 
ALARM 
 ----------------------------------------------------- 
F50-
F54 
Internal damage of the 
PSU. 
PSU FLT 
ALARM 
- service codes 
F60 
No communication 
PSU FLT 
ALARM 
- no communication with LCD panel 
F61-
F64 
LCD damage 
PSU FLT 
ALARM 
- service codes 
F65 
Access unlocked 
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