Ampac EvacU, Technical Manual

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Page 35
EWCIE Technical Manual
10.7 5 Amp & 10 Amp PSU Signalling and Diagnostics
10.7.1 Fault Outputs
EPS Fault GEN Fault Condition Possible Cause Action
Closed Closed Normal
operation
Mains present
Battery healthy None
Open Closed Standby
Mode
Mains lost
Battery driving load Investigate loss of mains
Closed Open Fault
Present
Blown fuses
Battery fault
Internal fault Investigate fault source using
diagnostic LED
Rectify fault where possible
Open Open PSU
Shutdown
Mains lost
Standby battery
exhausted Restore mains as soon as possible
10.7.2 LED Indication
YELLOW LED Fault LED
GREEN LED Mains supply On
DIAGNOSTICS Diagnostic LED (Not visible through front panel)
10.7.3 Fault Diagnostic table – Front panel – User
Yellow LED
Fault
Green LED
Mains
Condition Possible Cause Action
Off On
Normal
operation
Mains present
Battery healthy
None
Flash
Continuous
On or Off Fault
Blown fuses
Battery fault
Internal fault
Contact service engineer
1 Pulse Off
Standby
Mode
Mains lost
Battery driving load
Investigate loss of mains