The Schneider UPS APC gave me error code FU which means bypass is unstable what could I do to fix it what could cause it ?

[Mohmed_77]

The Schneider UPS APC gave me error code FU which means bypass is unstable what could I do to fix it what could cause it ?

[Teken]

Please state the exact model APC UPS in question as a starter. 

[kareem87]

i have the same issue with 6000 VA easy UPS SVRS6KI , what should be done ??

[kareem87]

i have the same FU error code issue with 6000VA easy UPS SVRS6KI, what should i do ?

[Teken]

Provide the event & data logs for the system. If the unit has a NMC installed show me how the unit is setup and defined for power quality, sensitivity, transfer voltage, and bypass mode.