Check Items Before Test Operation (Before Powering - Toshiba MCY-MUG0401HSW-E Service Manual

8-2. Check items before test operation
(before powering-on)
Prior to the test operation, check the following items to verify there are no problems with the installation work.
Main check items for electric wiring
The communication system differs from previous period model air conditioners.
Check wiring points again carefully.
(2)
(1) Are the indoor and outdoor communication lines connected to the Uv terminals?
(2*) Is the communication line between Shut-off Valve unit and indoor unit connected to A, B terminals?
(3*) Is the communication line between Leak Detector and indoor unit connected to A, B terminals?
(4*) Is the termination resistor (SW100-bit 2) on the interface P.C. board of the outdoor unit turned on?
(5*) Is the end terminal of the shield wire earthed at the outdoor unit side?
* Check item (2) or (3) only when the safety device (Shut-off Valve unit, Leak Detector) is connected.
NOTE
The figure above does not show all the electric wires.
For details, refer to the installation manuals for the outdoor unit, indoor unit, remote controller, or optional devices.
Outdoor unit
SW101
(4)
SW100
Indoor unit
(3)
Shut-off
Leak
Valve unit
Detector
Main check items
(1)
Uh
SW102
Uv
Uv Uv
A B A B
Remote Remote
controller controller
76
(1)
Uv Uv
A B A B
Remote
controller
Check