Forza FDC-2012R-I, User Manual

4. Troubleshooting guide

If the UPS system does not operate correctly, use the table below to troubleshoot the problem

5. Storage and maintenance

Maintenance 

The UPS system contains no user-serviceable parts. If the battery service life (3~5 years at 25°C ambient temperature) has been 

exceeded, the batteries must be replaced. In this case, please contact your dealer or service center.

Storage

Charge the UPS for at least 5 hours before storing the unit. Cover the UPS, and place it upright in a cool, dry location. During storage, 

recharge the battery in accordance with the following table

Symptom

Possible cause

Solution

Even though the mains supply is 

normal, there are no status indica-

tors or alarms

Check to make sure the power cord is 

firmly connected to a AC wall socket

The AC input cable is not properly 

connected

The     icon and the warning code   

become illuminated on the LCD 

display, and the alarm starts 

beeping once every 2 seconds

Plug the power cord to a wall socket

The AC input is connected to the 

UPS outlet

Set the circuit in its closed position to 

disable the EPO function

EPO function is enabled

Rotate mains power socket by 180° and 

then connect to UPS system

Line and neutral conductors of UPS 

input are reversed

Check if all batteries are properly 

connected

The external or internal battery 

connection is incorrect

Contact your dealer or service center

Battery voltage is too high or the 

charger fails

Please contact the dealer or service 

center

Battery voltage is too low or the 

charger fails

Remove excess loads from UPS output

UPS is overloaded

Remove excess loads from the UPS 

output

Input current is above the accept-

able limits 

The     icon and the      warning code 

become illuminated on the LCD 

display, and the alarm starts beeping 

once every 2 seconds

The      and       icons become 

illuminated on the LCD display and 

the alarm starts beeping once every 

2 seconds
Fault code 27 and the         icon 

become illuminated on the LCD 

display, and the alarm starts 

beeping continuously
Fault code 28 and the         icon 

become illuminated on the LCD 

display and the alarm starts beep-

ing continuously

The     ,                 icons and the   

become illuminated on the LCD 

display, and the alarm starts 

beeping every second

Fault code 49 becomes illuminated 

and the alarm starts beeping 

continuously
Fault code 43 becomes illuminated 

along with the                icon on the 

LCD display, and the alarm starts 

beeping continuously

Battery backup time is shorter than 

its nominal value

Charge the batteries for at least 5 hours 

and then check their capacity. If the 

problem persists, consult your dealer

Batteries are not fully charged

Fault code 2A appears on the LCD 

display while the alarm beeps 

continuously

Check to make sure that the wiring of 

the external battery pack connected is 

not shorted 

Short circuit detected on the char-

ger output  

Fault code 45 appears on the LCD 

display while the alarm beeps 

continuously

Please contact the dealer or service 

center

There is no output voltage from the 

charger and the battery voltage is 

below 10V/PC

Contact your dealer for a replacement

Defective batteries

Remove excess loads from the UPS 

output

UPS is overloaded. Devices 

connected to the UPS are fed 

directly from utility power via the 

Bypass

Remove excess loads from the UPS 

output first. Shut down the UPS com-

pletely before restarting the unit once 

again

After repetitive overloads, the UPS 

is locked in Bypass mode. Connect-

ed devices are fed directly from 

utility power

Remove excess loads from the UPS 

output and restart the unit once again

The UPS shuts down automatically 

upon detecting the overload condi-

tion in the output

Fault code 14 becomes illuminated 

and the alarm starts beeping 

continuously

Check the output wiring and if connect-

ed devices are short-circuited

Fault codes 01, 02, 03, 11, 12, 13 

and 41 become illuminated on the 

LCD display, and the alarm starts 

beeping continuously

Please contact the dealer or service 

center

The UPS shuts down automatically 

upon detecting the overload condi-

tion in the output
A UPS internal fault has occurred. 

There are two possible causes:

1. Power is continued to be supplied 

to the load, but is done directly from 

the AC grid via a bypass

2. Power is no longer supplied to 

the load

Batteries must not be discarded as regular household waste! As part of the company’s 
eco-friendly approach, we encourage you to follow all applicable local waste regulations 
to dispose of your used devices and batteries properly.

-25°C - 40°C
-40°C - 45°C

Every 3 months
Every 2 months

1-2 hours
1-2 hours

Storage temperature

Recharge frequency

Runtime