C400R User Manual
Page 9
ALARMS & FAULTS
Use the following troubleshooting chart to determine the UPS alarm condition.
ALARM CODE
EVENT
CAUSE
ACTION
N/A
FAILURE TO RESPOND OR
ILLUMINATE
No mains input detected by the UPS
Check building wiring, fusing and input wiring
N/A
RUNTIME LOWER THAN
EXPECTED
Batteries not fully charged / batteries require
replacement
Charge the batteries for at least
5 - 8 hours and then check capacity. If the
problem persists, consult your CertaUPS
representative
84
INTERNAL FAN SPEED
ABNORMAL
Low RPM or fan failure
Check the fan is running and free from
obstruction
16
BATTERIES OVERCHARGED
Batteries are overvoltage
The C400R will automatically discharge to the
correct value and maintain the battery
voltage
12
LOW BATTERY
Battery voltage is low
An alarm will sound every second, the battery
is almost empty
15
CHARGER FAIL
A critical failure of the charging module has
occurred
Consult your CertaUPS representative
86
HIGH INTERNAL TEMPERATURE The internal temperature of the UPS is too high
Check ventilation of the UPS, also consider
the ambient temperature
82
HIGH AMBIENT TEMPERATURE The ambient temperature is too high
Check environment and ventilation
11
BATTERY OPEN
Batteries not connected correctly
Check the EBM is correctly connected,
confirm the Battery breaker is on
13
SERVICE FAILURE
Battery condition is preventing proper operation
Consult you CertaUPS representative
41/42/43
UPS OVERLOADED
The UPS is overloaded
Remove noncritical load, check for attached
device failure
71
EPO ENABLED
The EPO state has changed condition NO/NC
Confirm reason for activation and reset EPO
status
21
BUS HIGH
Fault preventing proper operation
Consult you CertaUPS representative
22
BUS LOW
Fault preventing proper operation
Consult you CertaUPS representative
23
BUUNBALANCED
Fault preventing proper operation
Consult you CertaUPS representative
25
SOFT START FAILURE
Fault preventing proper operation
Consult you CertaUPS representative
32/33/34
INVERTER FAILURE
Fault preventing proper operation
Consult you CertaUPS representative
81
OVER TEMP
UPS is Over temperature preventing proper
operation
Check ventilation of the UPS, also consider
the ambient temperature
87
NTC OPEN
Internal UPS fault
Consult you CertaUPS representative
31
INVERTER SHORT
Output short Circuit
Remove all loads. Turn off the UPS. Check
output wiring and load for short circuit before
turning on
TO REGISTER A FAULT PLEASE VISIT
WWW.CERTAUPS.COM/SUPPORT/FAULT-REPORTING/
