© 2006
GE ECM
by Regal-Beloit
- 43 -
Indoor Blower Motors
v0.2
Remember that the customer is your best source of information on what the system
is doing, was doing, and how it performed when running properly. This can save a
lot of diagnostic time, and build your reputation with the customer as someone who
not only cares enough to ask their opinion, but is professional enough to not just go
for the meter and the tools.
If the motor is operating…
If the motor is running, but is noisy or doesn’t appear to be at the proper airflow after
any delays or profiles have ended, then the problem may be restrictions in the air
side of the HVAC system, not the motor.
-
Check and clean or make the necessary adjustments as needed to the
following airside components. Keep in mind these things should be checked
and maintained regularly.
o
Filter (clean)
o
Registers and grills (clear and open)
o
Dampers (open or at least not closed)
o
Blower wheel (clean)
o
Secondary Heat Exchanger (clean)
o
Evaporator Coil (clean)
o
If the system is zoned, what position are the dampers in and what
position should they be in?
Supply Trunk
Return
Trunk
Supply Registers
Damper
Filter
Secondary
Heat Exchanger
Evaporator
Coil (A-Coil)
Blower
Wheel
Return Grille