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Troubleshooting 

 

Problems Possible 

Cause 

Solution 

UPS can’t turn on, 
LED does not light 

Power switch not pressed 
long enough 

Press the power switch for more 
than 1 second until the UPS 
turns on 

Battery voltage is less 
than 10V 

Recharge the battery for 6 hours 
by leaving the UPS plugged in 
and the load disconnected from 
the UPS. 
 

Load is less than 20W at 
battery mode 

Disable “No Load Shutdown 
Function” 

PCB failure 

Call for service 

UPS always at battery 
mode 

Input power cord is loose

Plug in the power cord firmly 

Busted input fuse 

Replace the fuse 

Input voltage too high or 
too low   

Check input voltage 

PCB failure 

Call for service 

Back up time too short

Battery is not fully 
charged or defective 

Recharge the battery for 6 
hours.    If the problem is still 
present, replace the battery. 

PCB failure 

Call for service 

Buzzer continuously 
beeping 

Overload Remove 

some 

loads 

 
 

Contact Information 

 

 

OPTI-UPS USA: 

Tel: +1-909-869-5700 
Fax: +1-909-869-5730 
[email protected] 
www.opti-ups.com 

OPTI-UPS Australia   
& New Zealand:

 

Tel: +64-9-441-6470 
Fax: +64-9-441-6490 
[email protected] 
www.opti-ups.com 

OPTI-UPS Europe: 

Tel: +31-40-401-50-00 
Tel: +31-40-262-80-57 
Fax: +31-40-254-60-06   
[email protected] 
www.opti-ups.com 

OPTI-UPS Germany: 

Tel: +49-2173-9377670 
Tel: +49-2173-9377671 
Fax: +49-2173-9377672 
[email protected] 
www.opti-ups.com 

 

 

 

 

OPTI-UPS Middle 
East: 

Tel: +9714-8819-838 
Fax: +9714-8819-938 
[email protected] 
www.opti-ups.com 

OPTI-UPS Japan: 

Tel: +81-3-3629-5782 
Fax: +81-3-5682-0652 
[email protected] 
www.opti-ups.com 

OPTI-UPS Asia: 

Tel: +886-2-2246-7272 
Fax: +886-2-2246-7312 
[email protected] 
www.opti-ups.com 

 

 

Warranty 

 
LIMITED WARRANTY 

What the warranty covers: 

We guarantee this product to be free from defects in material and workmanship during 
the warranty period. If a product proves to be defective in material or workmanship 
during the warranty period, we will at our sole option, repair or replace the product 
with a like product. 

How long the warranty is effective: 

For accurate warranty period and conditions, please contact the local branch offices or 
your dealers. 

Who the warranty protects: 

This warranty is valid only for the first consumer purchaser.   

What the warranty does not cover: 

1.  Any product on which the serial number has been defaced, modified or 

removed. 

2.  Damage, deterioration or malfunction resulting from: 

a)  Accident, misuse, neglect, fire, water, or other acts of nature, unauthorized 

product modification, or failure to follow instructions supplied with the 
product. 

b)  Repair or attempted repair by anyone not authorized by OPTI-UPS. 
c)  The fault is the result of accidental damage or damage in transit or 

transportation, including but not limited to liquid spillage. 

d)  Removal or installation of the product. 
e)  Causes external to the product. 
f)  Use of supplies or parts not meeting our specifications. 
g)  Normal wear and tear. 
h)  Any other cause which does not relate to a product defect. 

3. 

Removal, installation and set-up service charges. 

Limitation of implied warranties:

 

There are no warranties, expressed or implied, which extend beyond the description 
contained herein including the implied warranty of merchantability and fitness for a 
particular purpose. 

Exclusion of damages:

 

Our liability is limited to the cost of repair or replacement of the product. We shall not 
be liable for: 

1.  Damage to other property caused by any defects in the product, damages based 

upon inconvenience, loss of use of the product, loss of time, loss of profits, loss 
of business opportunity, loss of goodwill, loss of data, loss of software, costs of 
substitute equipment, interference with business relationships, claims by third 
parties, or other commercial loss, even if advised of the possibility of such 
damages. 

2.  Any other damages, whether incidental, consequential or otherwise. 
3.  Any claim against the customer by any other party. 

 

Specifications 

 
Model 

Thunder Shield 1250(B) 

Thunder Shield 1700(B) 

Thunder Shield 2250(B)

 

Maximum Capacity   

600W 

900W 

1200W 

Topology Line-interactive 
On-battery Output Waveform 

Simulated Sine Wave 

Input Voltage Range 

110/120V or 220/230/240V 

±

 25% 

Input Frequency 

50Hz/60Hz Auto Sensing 

Output Voltage Regulation 

Rated voltage 

±

 5% 

Communication Port 

RS232

*)

 

Data Line Surge Protection 

RJ11/RJ45

*)

 

Surge Energy Rating 

480 Joules 

Recharge Time to 90% 

6 hours 

Operating Temperature 

0~40

°C

 / 32~104

 

Storage Temperature 

-20~60

°

C / -4~140

 

Relative Humidity 

0 to 95% maximum, non-condensing 

Audible Noise 

<40 dBA 

Unit Dimensions (L

×

W

×

H), mm 

382×130×192 

Net Weight, kg 

13.4 (14.8) 

15.9 (17.3) 

EMC/RFI Compatibility 

CE 

Safety Certifications 

CE, UL, cUL 

*)

 TS-B models only 

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