6
Specifications are subject to change without notice.
© 2015 Mitsubishi Electric US, Inc.
Step. 7
New parts from SPTB1 kit. (4) parts. Terminal block, screw,
power wiring harness and communication wiring harness.
Step. 8
Plug the connector from the Communication wiring harness
into the CN3C connector. Next, install the yellow wire to S3 and the
brown wire to S2.
Step. 9
Install the terminal block with the provided M4 screw be-
tween the two terminal blocks in the control box. There is already a
pilot hole for the M4 screw in the control box.
Step. 10
Plug the connector from the Power Wiring Harness into
CND. Connect the ground to the screw removed earlier and then
connect the blue wire to “L1” and the red to “L2”.
NOTE:
If a ferrite bead was removed from the original wiring harness
from the air handler, reinstall it over the blue and red wire in the new
Power Wiring Harness.
Power wiring
harness
Communication
wiring harness
Ferrite bead
if required
Terminal block and
mounting screw
