© 2006
GE ECM
by Regal-Beloit
- 51 -
Indoor Blower Motors
v0.2
Check the
Input power (High Voltage) to the motor controller.
1. Disconnect the power to the system
2. Disconnect the 5-pin (high voltage) connector
3. Restore the power to the system
4. Check for proper input power
Safety Notes:
-
Never disconnect the 5-pin high voltage connector from the motor with
the power on to prevent arcing
. The ECM motor may draw as much as 150
amps peak when powered up. Remember that the ECM motor uses electrical
energy even if the motor is not doing useful work (is at rest).
-
Do not trust the blower door switch for power disconnection. To avoid
frequent arching of the door switch contacts use the main disconnect on any
system with an ECM motor before removing or replacing the blower door.
-
Always pull on the connector and not the wires. The 5-pin connector has
latches on each end. To remove the connector, squeeze the two latches
together and pull gently. You may want to note the orientation of the plug.
Remember it is keyed, often located in the down position on the motor, and
sometimes where there is limited working space.
-
Always confirm that the system power has been disconnected with a meter.
Check line to line and each line to ground.