Page 14
FIGURE 8
POWER
CONNECTOR J48
CONTROL
CONNECTOR J49
GenTeq HARNESS CONNECTORS
J49
PIN 1 ‐ C1
PIN 2 ‐ W / W1
PIN 3 ‐ C2
PIN 4 - Delay
PIN 5 ‐ Cool
PIN 6 ‐ Y1
PIN 7 ‐ Adjust
PIN 8 ‐ Out
PIN 9 ‐ O
PIN 10 ‐ DS(PWM)
PIN 11 ‐ Heat
PIN 12 ‐ R
PIN 13 ‐ EM / W2
PIN 14 ‐ Y / Y2
PIN 15 ‐ G
PIN 16 ‐ Out +
J48
PIN 1 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 2 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 3 ‐ Ground
PIN 4 ‐ AC Line
PIN 5 ‐ AC Line
1
1
16
FIGURE 9
EMERSON MOTOR HARNESS CONNECTORS
POWER
CONNECTOR J48
CONTROL
CONNECTOR J49
1
J49
PIN 1 ‐ C1
PIN 2 ‐ W / W1
PIN 3 ‐ C2
PIN 4 - Delay
PIN 5 ‐ Cool
PIN 6 ‐ Y1
PIN 7 ‐ Adjust
PIN 8 ‐ Out
PIN 9 ‐ O
PIN 10 ‐ DS(PWM)
PIN 11 ‐ Heat
PIN 12 ‐ R
PIN 13 ‐ EM / W2
PIN 14 ‐ Y / Y2
PIN 15 ‐ G
PIN 16 ‐ Out +
J48
PIN 1 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 2 ‐ Jumper PIN 1 to PIN2 for 120VAC line input only.
PIN 3 ‐ Ground
PIN 4 ‐ AC Line
PIN 5 ‐ AC Line
16
1
Power Choke (L13)
A choke coil is used on 5 ton 1 hp units. The choke is lo
cated on the blower housing and is used to suppress transient
current spikes.
Precautions
If the furnace or its electronically controlled blower motor is im
properly or inadequately grounded, it may cause television in
terference (commonly known as RFI or radio frequency inter
ference).
This interference is caused by internal switching fre
quencies of the motor controller. TV interference may
show up as small specks or lines which randomly appear
on the TV screen accompanied by pops or clicks in the sound.
Before attempting any service, make sure the indoor unit is
causing the interference. To check, disconnect power to indoor
unit then check TV for continued signs of interference.
TV interference may be stopped by making sure the mo
tor is solidly grounded to the cabinet (metal to metal) and
by making sure the cabinet is solidly grounded. If TV in
terference persists, make sure the television (and all af
fected RF appliances) are moved away from the furnace. Also
make sure affected appliances are connected to a separate
electrical circuit.
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