Panasonic EBL512 G3 Operating Instructions Manual page 65

EBL512 G3 V. 3.0.X - FIRE ALARM SOLUTIONS OPERATING INSTRUCTIONS
FAULT: Low performance on primary network, CU xx
Control unit xx has detected several bit faults and/or low signal strength on the incoming primary network.
Check cables, connections, etc.
FAULT: Low performance on secondary network, CU xx
Control unit xx has detected several bit faults and/or low signal strength on the incoming secondary network.
Check cables, connections, etc.
FAULT: Low voltage, control unit xx
System voltage < 21.0 V DC, in control unit no. xx. Check the power supply, rectifier LS 150-24 (5047) output voltage, which shall
be 24 V DC. Replace LS 150-24 if required.
A control unit powered by the back-up battery only, will shut down at a battery voltage of 20.6 V, in order not
to damage the battery. When this fault is detected, the log is saved to flash automatically, in order to keep
the log intact after a power failure.
FAULT: Low voltage, technical number xxxxxx
System voltage < 21 V DC in the external power supply unit 3366 or 4466.
Check the power supply, rectifier output voltage, which shall be 24 V DC. Replace if required.
FAULT: Mains, control unit xx
The fault is activated 1-300 minutes after:
• Loss of mains, i.e. no 230 V AC
• Blown mains fuse.
• Blown fuse F1 on main board. Fuse F6.3A H 250V (5x20 mm ceramic).
When this fault is detected, the log is saved to flash automatically, in order to keep the log intact after a power failure.
FAULT: Mains, external power supply,
control unit xx
This is valid for external power supply equipment, which has a fault output connected to a programmable input in the EBL512 G3
system.
The fault is activated 1-300 minutes after the input is activated.
• Loss of mains, i.e. no 230 V AC to the ext. power supply equipment.
• Blown mains fuse.
• Check the programmable input connections.
65