© 2006 GE ECM by Regal-Beloit
Indoor Blower Motors v 0.2
Table of Contents
Premium ECM Indoor Blower Motors 1 - 72
Then and Now – The History of the GE ECM™ 1
Residential Blower Motor Applications 2
ECM vs. PSC 3
Constant Airflow 4 - 5
PSC Motor Operation 6
Premium ECM Motor Operation 7 - 9
Comfort 10
Efficiency 11
ECM Myths and the Air Distribution System 12
The ECM Technology (overview) 13 - 14
Premium ECM Motor Construction 15 - 16
Rotor Position Sensing 17
The Line Voltage (high voltage) Power Connection 18 - 19
The Signal Cable (low voltage) Connection 20 - 22
Initial Set-Up Modes of Operation 23 - 38
Thermostat Mode 23 - 33
PWM (Pulse Width Modulation) 34 - 36
DSI (Direct Serial Interface) 37 - 38
Servicing the Premium ECM Motor 39 - 72
Service Basics 40 - 43
If the Motor is Operating 43 - 49
If the Motor is not Operating 50 - 54
Checking the Motor Control and Motor module 55 - 60
Replacing the ECM Modules 61 - 70
Premium ECM Motor Failure Footnotes 71 - 72
Standard ECM Indoor Blower Motor 73 - 91
X13 Standard ECM Features 74
X13 vs. PSC 74 - 75
X13 Connections and Communication 76 - 81
Servicing the X13 82 - 88
Replacing the X13 89 - 91
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