C300R User Manual
Page 24
TROUBLESHOOTING
The C300R series is designed for durable, automatic operation. It also provides alerts whenever potential operating
problems occur.
•
Events are silent status indicators. Example = "AC freq in range".
•
Faults are announced by a continuous beep. Example = Out. Short circuit.
ALARMS & FAULTS
Use the following troubleshooting chart to determine the UPS alarm condition.
ALARM CODE
CAUSE
ACTION
OPST
Output short detected
Remove all loads and identify the cause of the short, once
the short is cleared turn the UPS back on.
OVLD
The UPS output is overloaded
Remove non-critical loads
Check for failed connected devices
bATH
The battery voltage is too high
Contact your service representative
bATL
The battery voltage is too low
Contact your service representative
OVTP
The internal temperature of the UPS is too high
Ensure adequate ventilation and ambient temperature
FNLK
The UPS fan is locked
Contact your service representative
bTWK
The batteries are weak and require recharging or replacing
Contact your service representative
SITE
Site wiring fault
Check input wiring for fault
FANF
UPS has confirmed fan failure
Contact your service representative
HIGH
Battery over-voltage (overcharged)
Confirm correct EBM is installed, the UPS will switch to
battery and discharge to the correct Vdc
bLOW
The battery is almost empty
Prepare for imminent shutdown, Supply UPS with utility
power
CHGF
Charge failure
Contact your service representative
TEPH
Inverter temperature high
Ensure adequate ventilation and ambient temperature
bOPN
Battery circuit open
Confirm EBM is correctly attached
dCHF
Digital charger fail
Contact your service representative
ITPH
Internal temperature high
Contact your service representative
TO REGISTER A FAULT PLEASE VISIT
WWW.CERTAUPS.COM/SUPPORT/FAULT-REPORTING/
ALARMS SHOWN ON THE CONTROL PANEL DO NOT MEAN THAT THE OUTPUT POWER IS AFFECTED. INSTEAD THEY ARE
PREVENTIVE ALARMS INTENDED TO ALERT THE USER
