User Guide

13
Winding Test Mode
The WINDING TEST Mode is performed on a
motor that is already shown to be defective. It’s
used to identify if the windings section of the
motor is defective also, or if you only need to
replace the electronics module on the end of
the motor. Since the complete motor costs hun-
dreds of dollars, and the electronics package
can be about $100, it makes good sense to
replace just the pack if possible.
• Hook-Up: Shut off power. Disconnect the Line
Power plug at the motor. Disconnect the 16-pin
plug at the motor.
Remove blower assembly and
electrically isolate it from furnace/air handler.
WAIT 5 MINUTES FOR THE CAPACITORS TO
DISCHARGE! Then, remove only the two bolts
that hold the pack onto the end of the motor.
Carefully squeeze the locking tab on connec-
tor inside pack, gently rocking the 3-wire plug
to separate it from the motor. Now, connect the
white VZ-7 harness to that connector and the
alligator clip to a bare area of motor case; leave
the blue harness unconnected.