York HIDS006B21S Service Manual page 27

● Wired Controller Connecting Diagram
(a) Wired Controllers to each Unit for Individual Operation Setting
Outdoor Unit
Wired
Controller
(b) One Wired Controller for Individual Operation Setting
Indoor Unit
Outdoor Unit
Wired
Controller
(c) Connecting Wired Controller if Connecting between Individual Systems
Indoor Unit
Outdoor Unit
Wired
Controller
NOTE:
Thermo-ON: The outdoor unit and some indoor units are running.
Thermo-OFF: The outdoor unit and some indoor units stay on, but don't run.
SM-18001-rev.1
Indoor Unit Indoor Unit
A B
Wired
Controller
Indoor Unit
A B A B
The communication cabling
for the wired controller is
necessary.
Indoor Unit
A B A B
Wired
Controller
Individual
Simultaneous
(Thermo ON / OFF individually)
A B
Indoor Unit Indoor Unit
A B
A B
Individual
TROUBLESHOOTING
Outdoor Unit
Wired
Controller
3-5