Front panel
OM226131 Rev. A 7
3) Wrong positioning of the UPS (distance from walls,
altitude)
A22 BYP SWITCH = Closure of the commutation switch which forces the
load to bypass (maintenance)
A23 EPO BUS = Intervention of the emergency power off switch
according to the EN50091-1
A24 CURR STOP = Inverter bridge stop for max current
Possible causes: 1) Repeated short circuits at the UPS output
2) Inverter bridge malfunctioning
This state can be reset by means of a push-button on the µP board.
A25 SHORT CIRC = Intervention of the short circuit protection (current
exceeding 200%)
Possible causes: 1) Problems on the load
2) Distribution problems downstream of the UPS
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