Xtreme Power Conversion Corporation
TX90 6kVA & 10kVA Service Manual
Page 39
Uninterruptible Power Supply
Error Code Er02
Definition:
The UPS is in 2nd stage soft start procedure, but the DC Bus can not reach and maintain anticipative
charging voltage after 2 seconds (approx. present 85% of peak voltage of utility, either present 80% of battery volt-
age or output voltage of charger).
Flow Chart