Forza FDC-2012R-I, User Manual

3-6. Operation mode description

3-7. Fault codes

Battery mode

When the input voltage exceeds the acceptable range or 

during a power failure, the UPS will start supplying power 

from the battery while the alarm will beep every 5 seconds.

Bypass mode

When input is within acceptable voltage range but the UPS 

is overloaded, the UPS will transfer to bypass mode or it can 

be manually changed to bypass mode using the front panel 

controls. The alarm will sound once every 10 seconds in this 

case.

Standby mode

The UPS is powered off and there is no power supplied to 

the loads; batteries, however, can still be charged.

Fault 

The UPS is in fault mode when it fails to provide output 

power to the loads. The ERROR icon and the fault code is 

displayed on the screen.

Fault event

Fault

code

Icon

Fault event

01
02
03
11
12
13

14

Fault

code

27
28
2A
41
43
45

49

Icon

x
x
x
x
x
x

x
x

x
x

Battery voltage too high
Battery voltage too low
Charger output shorted
Over temperature
Overload
Charger failure
Input current above the
acceptable limits

Bus start failure
Bus over
Bus under
Inverter soft start failure
High inverter voltage 
Low inverter voltage  
Inverter output shorted

Operation mode

Online mode

Description

LCD display

When the input voltage is within acceptable range, the UPS 

will supply pure and stable AC power to connected loads. 

The UPS will also charge the battery while in online mode.

ECO mode

(Efficiency

Corrective

Optimizer)

Frequency

converter mode

Energy saving mode:

When the input voltage is within the voltage regulation 

range, the UPS will bypass voltage to loads for energy 

saving. The UPS will also charge the battery while in ECO 

mode.

When input frequency is between 40Hz and 70Hz, the UPS 

can be set at a constant output value of 50Hz or 60Hz. The 

UPS will still charge the battery while in this this mode.

3-8. Warning indicators

Warning

Icon (blinking) Code

Alarm

Beeps once every 2 seconds
Beeps once every second
Beeps twice every 10 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds. 
(In this case, the UPS turns off 
to remind users there is some-
thing wrong with the batteries)
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds
Beeps once every 2 seconds

Low battery
Overload
Excessive input current
Battery is not connected
Overcharge
Site wiring fault
EPO enable
Over temperature
Charger failure

Battery fault

Bypass voltage out of range
Unstable bypass frequency
Battery replacement
EEPROM error

Note:

 The 

Site wiring fault

 function can be enable/disabled via software.

Rack display

Tower display