Heat pump system When multiple indoor units are connected to 1 outdoor unit: Give the authority to choose cooling, heating, or auto to 1 of these remote controllers. a b b b b c c c a Outdoor unit b Indoor unit c Remote controller d Changeover master e Changeover mode follower d e • For the remote controller without cooling/heating selection authority, the operation modes that can be selected are limited. Heat recovery system When multiple indoor units are connected to the same port of a branch selector unit: Give the authority to choose cooling, heating, or auto to 1 of these remote controllers.
d d a d b b b b a Outdoor unit b Indoor unit c Remote controller d Branch selector unit (This unit switches between cooling and heating.) e Changeover master f Changeover mode follower * The screen of the remote controller with no cooling/heating selection authority when the remote controller with cooling/ heating selection authority is in “Auto” mode and has selected Heat operation (auto heating) c c e e e f * 20 c c c