Alarms
General
The autodiagnostic system considers any system status other than normal as a problem.
Before taking any action, note down the messages displayed on the control panel.
Certain problems may prevent the control panel from functioning.
In this case, it is strongly recommended to call the APC by Schneider Electric
◗If the load is still correctly supplied with power, it has probably been transferred to the bypass AC source (static bypass) and is therefore no longer protected (if the system is in on- line mode);
◗if the load is no longer supplied with power, transfer it manually to the maintenance bypass (see section below).
Maintenance bypass
This operation is possible only if the system includes a bypass AC source. It results in the load being directly supplied by the bypass AC source via maintenance bypass switch Q3BP, thus ensuring a higher level of security in the event of a malfunction.
Switching procedures are explained on drawings next to each switch in the UPS cubicle and the external bypass unit. See section "maintenance configuration".