Lg Electronics 120S Manuale Utente

11-6 

 

 

 

 

 

 

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Are the indicator LED of the 

switch 1 and 2 on? 

No

 

Check the status of the switch
1and 2 

Yes 

 

Is input wiring correct? 

Separate the external wiring witch then
check the status by forced input 

 

Correct the wiring 

 
Check the status of the switch
1 and 2 

 
Unit  replacement is 
needed 

Check the status of the switch
1and 2 

 

Is input wiring correct? 

 

Is the 

terminal screw tighten 

securely? 

 

 

Is input wiring correct? 

   Correct wiring 

Retighten the terminal
screw 

 
Replace the terminal 
board connector 

 

Unit replacement is 
needed 

Check from the beginning 

 

Is the condition 

of the terminal board connector 

appropriate? 

Yes 

No 

No 

Yes

No 

Yes 

Yes 

No 

Yes

NO 

No