Teletek electronics PS1210 12V 1A, Installer Manual

6. TROUBLESHOOTING. 

Problem 

Cause and Remedy 

The LED does 

not display green, 
despite mains power 
supply. 

1.  Blown fuse. Before changing fuse find out the possible cause! If the 

new fuse also blows out, the device must be dismantled and taken to the 
producer’s service station to be repaired.

No voltage at 

output when mains 
power supply is off. 
No LED indication. 

1.  Fault in battery. 
2.  Blown fuse of accumulating supply. Before changing the fuse, find 

out the possible cause! Most probably the maximum charge current has 
been exceeded. The battery needs to have at least 60 % capacity charge 
before it can be used as a backup power source. 

Low voltage at 

output. LED lights in 
green. 

1. The battery is being charged with maximum current. Turn off the 

cable to the battery. If the voltage restores, leave the battery to charge and 
check it again in about 15 minutes. 

2. Maximum output current has been exceeded (1A for PS1210, 2

А

 for 

PS1220, 3

А

 for PS1230). Check the consumed charging current. If it is 

greater than the reference, there could be a fault in any of the powered 
modules or devices. 

3. If the voltage remains low, despite the low level of the current 

consumed, the device must be dismantled and taken to the producer’s 
service station to be repaired. 

Higher output 

voltage. 

Immediately turn off the device and take it to the producer’s service 

station to be repaired. 

WARNINGS:  
 

1.  The device normally operates only when the LED displays the green light. Any other indication 

suggests operator’s interference.  

2.  A red LED means lack of basic power supply and backup supply below rated limits. In order to 

ensure normal operations of the modules and devices, powered from the unit, change the storage 
battery with one that is charged, until the basic mains power supply is restored. 

18020329 rev.A 07/

2004 

- 8 -