Friedrich DDC1 Dry Contact Manual De Instrucciones página 9

Setting and using method
After change any Dry contact setting, then you must press RESET switch to reflect the setting.
1. Power supply and indoor unit connection
■ When using the Dry contact for communication independently
Indoor unit
PCB
CN_Ther/Oper CN_MODE
CHANGEOVER_SW
RESET_SW
Setting and using method
CN_WIND
SETTING_SW
DISPLAY_LED
TEMP_SW
CN_OUT
Installation manual 9