Swansons 1K, User Manual

26 

6.2. 

Error Codes and Their Meanings 

Code Meaning 

Er05 

Battery weak or faulty 

Er06 

Output short-circuited 

Er07 

EPO mode 

Er11 

UPS over-temperature 

Er12 

Inverter overload 

Er24 

Utility low

（

< 160 V

）

or battery disconnected 

Er28 

Bypass overload 

6.3. 

Maintenance 

     1. Clean the dust from the ventilation openings and intakes on the rear panel.   

2. Turn off the UPS and wipe the casing with a damp cloth.

Be careful to 

avoid getting water in the UPS.   

3. Periodically unplug the power cord of the UPS from the wall receptacle to 

test the condition of the batteries. Be sure you have saved your data in 
any open computer applications before you proceed with this battery test.   

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7. Communication 

Software 

7.1. 

Hardware Setup 

1. 

Decide whether to use RS-232 communication or USB communication. 

(For 

optional interface cards please refer to Chapter 8.)

2. Connect a male RS-232 connector or a USB cable* to the UPS 

communication port. Connect the female RS-232 connector or the other 
end of the USB cable to the computer. 

*Note: RS-232 and USB cables are optional. 

7.2. 

Software Installation 

Please refer to the software user’s manual.