19
Before replacing the electronic-control module,
you must test the motor module to ensure it is
not also damaged. Installing a new control on a
failed motor will result in no operation, improper
operation and/or potential failure of the new
control. Procedures for testing the motor module
are included below.
Replacing the ECM Control Module
(Models 2.0 / 2.3 / 2.5 / Eon
®
/ 3.0 Only)
Disconnect AC power from the HVAC system.
Unplug the 16-pin or 4-pin communication
connector and the 5-pin connector from the motor
control.
Remove the blower assembly from the HVAC
system if needed.
ONLY after the system AC power has been
off for 5 minutes,
remove the two (2) hex-head
screws from the back of the control.
Unplug the 3-pin connector from the inside
of the control by squeezing the latch and gently
pulling on the connector (see Figure 4 on the next
page). Now you’re ready to test the motor.
1.
2.
3.
4.
Disconnect AC power from the system and make sure
the blower wheel has come to a complete
stop before servicing the motor.
You must have the correct replacement module
and/or motor from the manufacturer that is a direct
replacement for the failed module and/or motor.
USING THE WRONG MODULE AND/OR MOTOR VOIDS
ALL PRODUCT WARRANTIES AND MAY PRODUCE
UNEXPECTED RESULTS.
WARNING
WARNING
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