Xtreme Power Conversion Corporation
M90 & M90L Service Manual
Page 19
Uninterruptible Power Supply
Fault! TR Inverter Voltage
Short
T-R inverter Output is shorted
Shutdown and remove this power
module
Check IPOP and Inverter PCBA
Fault! Inverter R Negative
Power
R phase inverter Output
Negative Power over range
Shutdown and remove this power
module
Check IPOP and Inverter PCBA
Fault! Inverter S Negative
Power
S phase inverter Output
Negative Power over range
Shutdown and remove this power
module
Check IPOP and Inverter PCBA
Fault! Inverter T Negative
Power
T phase inverter Output
Negative Power over range
Shutdown and remove this power
module
Check IPOP and Inverter PCBA
Fault! Over Load Fault
The load devices are demanding
more power than the UPS can
supply.
Check output load
Fault! Battery Fault
Battery reverse
Check battery input wire( + N - )
Fault! Over Temperature
Make sure adequate space is
allowed for air vents and the fan is
working
Shutdown and remove this power
module
Check IPOP and Inverter and PFC
PCBA
Fault! Can Fault
CAN communication fault
Shutdown and remove this power
module
Check IPOP and Control PCBA
Fault! TRIG0 Fault
Trigger signal fault
Shutdown and remove this power
module
Check IPOP and Control PCBA
Fault! Relay Fault
Inverter relay fault
Shutdown and remove this power
module
Check IPOP and Control PCBA
Fault! Line SCR Fail
Line scr short circuit fault
Shutdown and remove this power
module
Check IPOP and PFC PCBA
Fault! Eeprom Fault
Eeprom operation error
Test again or Shutdown and remove
this power module
Check Control PCBA
Fault! Parallel Cable
Loosen Fault
As stated.
Shutdown Rack UPS
Check Parallel PCBA and the wire
Fault! DSP MCU Stop
Communicate
As stated.
Shutdown and remove this power
module
Check Control PCBA
Fault! Bypass SCR Fault
As stated.
Check main PCBA of STS module
Check SCR of STS module
Warning! EPO Active
Check the EPO connector
Check EPO connector and wire
Warning! Over Load Fail
The load devices are demanding
more power than the UPS can
supply.
Check output Load-Capacity and
specification
