Table 9.13 System Fault Messages - Toshiba 4200FA Installation And Operation Manual

If the fault condition occurs while the input power is abnormal and the UPS is in Bypass mode the UPS
will shut down the output to prevent load equipment damage.
When a Fault condition exists, the red LED on the UPS display panel will illuminate until the fault is
cleared.
Display Meaning
BYPOH Bypass Overheat –
Overheating condition
occurred.
CL Current Limit – UPS not
within specifications.
COV Charger Overvoltage –
Charger overvoltage
condition occurred.
DCOC DC Bus Overcurrent –
DC overcurrent
condition occurred.
DCOV DC Bus Overvoltage –
DC overvoltage
condition occurred.
DCUB DC bus unbalanced.
DCUVBS DC Bus Undervoltage
during Boostup Mode –
DC Bus undervoltage
condition occurred.
DCUVC DC Bus Undervoltage
During Charging Mode
– DC Bus undervoltage
condition occurred.
DOH Device Overheat –
Overheating condition
occurred.
OOC Output Overcurrent –
UPS is overloaded.
PHBRER Bypass phase rotation
error.
PHIRER Input phase rotation
error.
UPSOL UPS Overload.
VOOV Output Overvoltage –
Output overvoltage
condition occurred.
VOUV Output Undervoltage –
Output undervoltage
condition occurred.
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Table 9.13 System Fault Messages

Action
Check unit for blocked or in-operable fan. Lower ambient
temperature if it is greater than 104 °F (40 °C). Bypass operation
will also cease if overheat condition is not corrected within 1 hr. of
inverter shutdown. Try restarting. If condition re-occurs plan for
total shutdown and call for service.
Contact the nearest Toshiba authorized representative for
service.
Contact the nearest Toshiba authorized representative for
service.
UPS is possibly faulty. Check the UPS operation conditions at
time of fault. Not advisable to restart the UPS. Call for service.
UPS is possible faulty, input wiring error, input overvoltage or
connection of a motor load. Try restarting. If condition persists call
for service.
UPS is possibly faulty. Check the UPS operation conditions at
time of fault. Not advisable to restart the UPS. Call for service.
UPS is possibly faulty. Check the UPS operation conditions at
time of fault. Not advisable to restart the UPS. Call for service.
UPS is possibly faulty. Check the UPS operation conditions at
time of fault. Not advisable to restart the UPS. Call for service.
Reduce equipment load to 100% or less and try restarting.
Shutdown excess equipment to reduce load.
Bypass phase rotation is reversed. Switch any two input cable
connections: A and B, B and C, or C and A.
Input phase rotation is reversed. Switch any two input cable
connections: A and B, B and C, or C and A.
Reduce equipment load to 100% or less.
UPS is possibly faulty. Check the UPS operation conditions at
time of fault. Not advisable to restart the UPS. Call for service.
UPS is possibly faulty. Check the UPS operation conditions at
time of fault. Not advisable to restart the UPS. Call for service.
4200FA Installation and Operation Manual