Diagnosing The Variable Speed Vent Motor With The Variable Speed Troubleshooter - American Standard 50A65-475 Manual

Diagnosing the V/S Vent Motor with the V/S Troubleshooter
GREEN LED
Variable Speed Draft
OFF
Inducer Troubleshooter
LO HI
SWITCH
To Start Motor,
Put In Low Position.
R B
24 VAC
FURNACE TERMINAL BOARD
35
Variable Speed Vent Motor