6  TEST RUN 
 
 
 
7) Terminal resistance is set in whole 
H-LINK.  
 
 
(i) If H-LINK connection devices like package 
air-conditioner is connected besides RAC 
adapter, set the terminal resistance by 
package air-conditioner. The terminal 
resistance should be ON in only one 
position in whole H-LINK.  
 
 
 
 
 
 
(ii) In case that H-LINK is made up only by 
RAC adapter, set the terminal resistance 
by RAC adapter. The terminal resistance 
should be ON in only one position in 
whole H-LINK.  
 
 
 
 
 
 
5. TEST RUN 
 
 
Test run should be performed in the following way after finishing the installation, wiring and setting. 
See installation manual enclosed with each central control devices for the detail. 
 
1) Connection State Confirmation 
Confirm if RAC adapter connection is recognised in the central control device. In case that it is not 
confirmed, check the transmission cable, refrigerant cycle No. indoor unit No., terminal resistance 
setting etc.  
 
2) Registration 
Confirm if RAC adapter connection is recognised. 
 
3) Confirmation of Run/Stop Order 
Confirm if room air-conditioners work correctly by run/stop operation from the central control 
devices. Check also if air-conditioner state changes correctly by each setting. 
PCB 
Turn ON No. 1 pin of DSW4