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Manual 2100-549G
Page 54 of 59
TROUBLESHOOTING ECM
™
142R OUTDOOR FAN MOTOR
• Line power is connected as follows:
“Red Wire” connects to “L1”
“Black Wire” connects to “L2”
“Green/Yellow Wire” connects to “Ground”
• Control power is connected as follows:
“Blue Wire” connects to Fan Relay of the
Defrost Logic Control, and subsequently
connects to 24VAC Common through the
Fan Logic Control Board. “Yellow Wire”
connects to “Y” on the Fan Logic Control
Board. “White Wire” connects to “W” on
the Fan Logic Control Board. “Orange
Wire” connects to “O” on the Fan Logic
Control Board.
NOTE: A combination of the "Yellow", "White"
and "Orange" wires being energized (with
24V "R" signal) determines five (5) different
speeds the fan motor will operate at. The
Fan Logic Control Board uses an outdoor
thermistor sensor to determine the speed the
fan should operate. It also utilizes the "B"
reversing valve input for heat pump mode to
determine speed should operate.
If the output signals are not matching the specified temperature range, then go to Table #6 and verify the thermistor output
curve. If the motor
is receiving proper communications and proper high voltage power, and is still not running, proceed
with Motor Replacement. (When checking the resistance/temperature curve, don’t forget about the optional 2.2k ohm fan
control resistor assembly.)
TABLE 7
TROUBLESHOOTING ECM™ 142R OUTDOOR FAN MOTOR
TABLE 8
COOLING MODE
TABLE 9
HEAT PUMP MODE
REPLACING THE MOTOR
This motor is replaced in one piece. The control cannot
be replaced separately from the motor. Even if the
control is remotely located, the replacement part will be
a new control with harness and new motor.
You must have the correct replacement motor from the
manufacturer that is a direct replacement for the failed
motor.
USING THE WRONG MOTOR VOIDS ALL
PRODUCT WARRANTIES AND MAY
PRODUCE UNEXPECTED RESULTS.
Always mount the replacement motor and control
according to the manufacturers specifications using all
required hardware to reduce vibration. Make sure all
wires are free of the fan blade and not pinched in
mountings or cabinet through points.
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