Ingersoll-Rand M952V060BD36AB, Service Facts

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11
Service Facts
M952-SF-4
To Pin #12
To Pin #15
To Pin #1 & #3
24 V.A.C.
#9 PIN
WIRE IS ORANGE
#1 PIN
WIRE IS BL
UE
These service procedures will work on ECM-2
TM
motors and their motor con-
trol board and their 16 Wire Low Voltage Control Cable.
Jumper
Quick Check Motor Will Not Run
ECM-2 TM QUICK CHECK
Blower Motor Will Not Run
1. Jumper 24 Volt A.C. "R" Terminal to "G" terminal on the
Low Voltage Terminal board.
Does motor run?
NO:
Go to step #2.
YES:
Motor runs,
check Comfort Control
and Comfort Control wire.
2. Unplug 16 wire low voltage harness from the interface board.
Jumper 24 Volts A.C. to pins #12, #15 and common pins #1 and #3.
Does the motor run?
NO:
Go to step #3.
YES:
Replace the
variable speed
interface board
on the furnace.