Lennox G61MPV

Page 108
C−Indoor Blower Motor
LOW
COOL
SPEED
1 Disconnect power to unit.
2 Disconnect plug J46 from P46 located on the blower control
board.
3 Connect voltage source as shown above.
4 Turn on power to unit. Blower should operate at low cool
speed.
J46
R
C
1 Disconnect power to unit.
2 Disconnect 16 pin connector cable from the 16X4W.
3 Turn on power to unit..
4 Verify 24VAC between pins 1 and 12 using a multimeter.
1
16
REMOVE PLUG FROM BOARD
120V to the motor must not be interrupted. All connections for check out will be from 24VAC to
plug J46, after disconnecting from blower control board.
TWO STAGE VARIABLE SPEED CONTROL
WITH EMERSON MOTOR ONLY
LOW
HEAT
SPEED
J46
5 Disconnect power to unit.
6 Connect voltage source as shown above.
7 Turn on power to unit. Blower should operate at high cool speed.
11 Disconnect power to unit.
12 Connect voltage source as shown above.
13 Turn on power to unit. Blower should operate at high heat speed.
8 Disconnect power to unit.
9 Connect voltage source as shown above.
10 Turn on power to unit. Blower should operate at low heat speed.
HIGH
COOL
SPEED
J46
C
R
R
C
HIGH
HEAT
SPEED
R
C
J46
If transformer T1 is used, double check all wiring connections before placing unit back in operation.
TWO STAGE VARIABLE SPEED CONTROL
WITH GenTeq MOTOR OR EMERSON MOTOR
16X4W
16 pin connector
pin 1
pin 12