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3-3. Audible alarm

4. Troubleshooting  guide

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

5.  Storage and 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.

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.

Sounds every 4 seconds 
Sounds every second 
Sounds twice every second 
Continuous sound
Sounds every 10 seconds

Battery mode 
Low battery 
Overload 
Fault 
Bypass mode

Even though the mains supply 

is normal, there are no status 

indicators or alarms.

Even though the  mains supply 

is normal, the LED flashes and 

the alarm sounds once every 

second.

The alarm sounds twice every 

second and the red LED is 

flashing 

Even when mains supply is 

normal, the LED still displays 

battery mode

Red LED is on while the alarm 

beeps continuously

The AC input power is not properly 

connected

The AC input is connected to the UPS 

outlet

The internal or external battery is not 

connected properly

UPS is overloaded

Remove excess loads from

UPS output

Remove excess loads from the UPS 

output first. Shut down the UPS 

completely before restarting the unit 

once again

Charge the batteries for at least 5 

hours and then check their capacity. 

If the problem persists, consult

your dealer.

Replace it with the same type of 

battery 

Please contact the dealer or

service center

After repetitive overloads, the UPS is 

locked in Bypass mode. Connected 

devices are fed directly from utility 

power

Batteries are not fully charged.

Defective battery

UPS fault

Re-connect battery wires using the 

correct polarity 

Plug the power cord

to a wall socket.

Check to make sure the power 

cord is firmly connected to mains

Symptom

Possible cause

Remedy

Storage

temperature

Recharge frequency

Runtime

Every 3 months

Every 2 months

1-2 hours
1-2 hours

6. Technical specifications

FDC-1001RUL

 

1000VA/800W

Double conversion

1U

120VAC

80VAC / 70VAC / 60VAC / 55VAC ± 3%

(based on load percentage 100%-80% / 

80%-70% / 70%-60% / 60%-0%)

Low-line transfer v 10V

150VAC ± 3%

High-line transfer voltage - 10V

40Hz-70Hz

≤0.99 at 100% load

≤10% @ 100% load THDU <1.6%

rated voltage

IEC C14

FDC-1002R-I

 

1000VA/800W

Double conversion

1U

220VAC

160VAC / 140VAC / 120VAC / 110VAC ± 3%

(based on load percentage 100%-80% / 

80%-70% / 70%-60% / 60%-0%)

Low-line transfer v 10V

300VAC ± 3%

High-line transfer voltage - 10V

40Hz-70Hz

≤0.99 at 100% load

≤10% @ 100% load THDU <1.6%

rated voltage

IEC C14

MPN

General

Capacity

Topology

Rack unit

Input

Nominal voltage

Voltage range (low-line transfer)

Voltage range (low line comeback)

Voltage range (high line transfer)

Voltage range (high line comeback)

Frequency

Power factor

Total harmonic distortion (THDi)

AC plug style

-25°C - 40°C

50°C -55°C

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