Wiring Harness
1. Shut off power to unit. Wait 5 minutes.
2. Remove 5-pin connector from motor.
3. Remove 16-pin connector from motor.
4. Replace 5- pin plug and turn power on.
5. Check for correct voltages on 16-pin connector with screw terminals jumpered. ( See table 2 for values.)
If signals check correctly and motor does not run, inspect wiring harness for loose pins or damaged plastic connec-
tors that could cause poor connections. If connections are good, either motor control module or motor is defective.
If proper signals are not present, check Select Control Board using procedure below:
13
Table 2 - Wiring Harness Terminations
* Check voltages wit 16-Pin Plug disconnected from the motor.
** These signals will start the motor.
Dehumidify - 24VAC is present with a call for no dehumidication.
Pin # on
16-Pin
Connector
Signal on pin with
Screw Terminal
Jumpered to R *
1
Common
2
W /W1
Heating Signal
24VAC **
3
Common
4
Delay Adjust
5
Cool Fan Adjust
6
Y1
Cooling Signal
(-) 12VDC **
7
CFM Adjust
8
Not Used
9
"O" (HP/Cool)
10
Dehumidify
0V (24VAC on no call)
11
Heat Fan Adjust
12
24V AC
24VAC continuous
13
W2 / EM
Not used
14
Y /Y2
Not Used
15
G
Fan Signal
24VAC **
16
Not Used
Description
16-Pin Motor Wiring Harness to 16-Pin Connector on Select Board
1
4
5
3
2
AC
LINE
AC
LINE
CHASSIS
GROUND
JUMPER PIN 1 TO PIN 2 FOR
120VAC LINE INPUT ONLY
Figure 11 - 5 Pin Power Connector
Figure 10 - 16 Pin Signal Connector
1
2
3
4
6
5
7
8
9
10
11
12
14 13
15
16
Y1
C W1 C
G
24V
DH
WARNING:
Applying 240VAC line input
with Pin 1 and Pin 2 jumper in place
will permanently damage unit.
