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Variable Speed Indoor Blower Motor

Technical Conference - Panama City Beach, Fl - 2002. Variable Speed Indoor Blower Motor. Robert Helt. ECM™ Variable Speed Motor. Normal Blower Operation. Set Switches 1 & 2 for System Tonnage Set 3 & 4 for 350,400, or 450 CFM/Ton Set 5 & 6 for Time Delay / Enhanced Mode

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Variable Speed Indoor Blower Motor

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  1. Technical Conference - Panama City Beach, Fl - 2002 Variable Speed Indoor Blower Motor Robert Helt

  2. ECM™ Variable Speed Motor

  3. Normal Blower Operation • Set Switches 1 & 2 for System Tonnage • Set 3 & 4 for 350,400, or 450 CFM/Ton • Set 5 & 6 for Time Delay / Enhanced Mode • Set 7 & 8 for Desired Heating Airflow • Verify CFM with Flashing LED • Cont. Fan Airflow is 1/2 Cooling CFM • Cycle Power For New Switch Settings

  4. Variable Speed Motor Operation • G - On / Off Command for the Motor • Y - Selects Cooling Or Heat Pump Heating CFM • Ylo - Selects Low Speed Cool or HP Heating CFM • O - Tells Motor Cooling Mode is Selected • BK - Selects De-Humidify Mode when O is ON, or PWM Input for Variable Speed Mode Operation • W1 - Selects Low Heat CFM, Elect. or Gas • W2 - Selects High Heat on Gas Furnaces • W3 - Selects High Heat on Electric Heat (If Used)

  5. Time Delay Operation • The Time Delay Mode Senses Y or Ylo and G • The Off Time Begins When Y or Ylo & G Turn Off, simultaneously. • The Off Time Airflow will be 100% or 50% of the Last Airflow Depending on Option Selected • If Continuous Fan Mode is Selected, No Delay Operation Will Occur Because: G On, Cont Fan, is Considered a New Mode • Comfort “R” Mode, Delay Off CFM, will be 50% of the Last Requested CFM

  6. Variable Speed Motor Continuous Fan Wiring Options • Normal 50% of Cooling Airflow • Optional 40%, 80% and 100 % of Cooling Airflow Can be Provided • Some Wiring Tricks are Required • Get Your Thinking Cap On

  7. G G BK R BK to R Jumper Circulation AirflowFan Power(3 ton typical) 50%(normal) 60 - 100 watts Note: Only wiring involved is shown. Normal or Comfort “R” Mode. Single Speed or Two Speed systems.

  8. G to Y Jumper BK to R Jumper G Y BK R G Y Y Circulation Airflow Fan Power(3 ton typical) 100 %400 - 500 watts Note: Only wiring involved is shown. Single Speed System. Normal Mode Only.

  9. G Y O G Ylo O Y BK Y O Jumper G to Ylo to O Jumper Y to BK Circulation AirflowFan Power(3 ton typical) 40% (normal) 60 - 100 watts Note: Only wiring involved is shown. Single Speed system. Normal Mode.

  10. G Ylo O G Ylo O BK Ylo O Jumper G to Ylo to O Circulation AirflowFan Power(3 ton typical) 40% (normal) 60 - 100 watts Note: Only wiring involved is shown. Two Speed system. Normal Mode.

  11. G Y O G Y O BK Y O JumperG to Y to O Circulation Airflow Fan Power(3 ton typical) 80%200 - 350Watts Note: Only wiring involved is shown. Single Speed System. NON - Comfort “R” Mode.

  12. Cooling Mode andHumidistat Operation • Motor in Cooling Mode, when O Energized • BK is Humidistat Enable, 24Vac • Airflow is Reduced by 20% when BK is OffandO is On (Motor is in Cooling Mode) • De-Humidify mode - O is On, BK is Off • Delay Off airflow will be Reduced by 20% in De-Humidify mode

  13. G Y G Y BK R Y Humidistat BK to R Jumper Replaced by Humidistat Humidistat opens on Rising Humidity Note: Only wiring involved is shown. Normal Mode Only, Not Comfort “R”. Do not use Humidistat with Comfort “R”.

  14. De-Humidify Mode • Operates in Cooling Mode, O - On • G, Y or Ylo, O, and BK to Operate • Install Humidstat BK to R to De-Humidify • Provides 80% Airflow When Humidistat isOpen, BK is Off • Delay Off airflow will be Reduced 20% if Humidistat is Open

  15. Comfort “R” Mode“Enhanced Mode” • Comfort “R” Mode (Enhanced Mode) Operates in Cooling or Heat Pump Heating Modes, Air Handlers. Cooling Mode only in Gas Furnace, with “O”. • G, Y or Ylo, are the Only Inputs Required, A/H. In a Gas Furnace Application, O is also Required. • Comfort “R” Mode Operates in Low Speed and High Speed for Two Speed Systems

  16. 10% MOISTURE REMOVAL

  17. 1 Stage, Comfort “R” Mode “Enhanced Mode” SYSTEM AIRFLOW (CFM) 100% 80% Only if required FIRST STAGE 50% Dehumidify Warm Air Enhanced Comfort Enhanced Efficiency OFF OFF 3 1 7.5 minute minutes minutes COMPRESSOR OPERATION ON OFF

  18. Two Stage Comfort “R” Mode

  19. Variable Speed Reminders • If Enhanced Mode (Comfort “R”) is Selected, Jumper R to BK • If Enhanced Mode is Selected, Set 400 CFM/Ton • On Air Handlers, Comfort “R” Mode works in Heating and Cooling • On Gas Furnaces, Comfort “R” Mode works in Cooling when “O” is energized • On Packaged Units, G is not the Master on-off switch

  20. VSPD Reminders, cont. R to BK Jumper, Reminders • Remove BKJumper if Humidistat is installed • Remove if Variable Speed Mode, PWM Input • Remove for Special Continuous Fan Modes • Leave in for Standard Operation • Leave in for Enhanced Mode Operation

  21. G Y O G Y BK R O Y O BK to R Jumper Circulation AirflowFan Power(3 ton typical) 50% (normal)60 - 100 watts Comfort “R” Can Operate in Heat Pump and Cooling Modes

  22. Variable Speed Tools Two Colors Test Wire Go - No Go Cable Trouble Shooter Kit Order Pub. No. 34-3403-01

  23. Variable Speed Tools The Test Board is used in place of the Variable Speed Fan Motor

  24. Problem DiagnosisUsing Troubleshooting Tools • Verify Signals to Motor w/Troubleshooter • LED’s Indicate Which Dip Switches are in the ON Position • LED’s Indicate Which Control Lines are Energized • Verify Motor Operation w/Go-No Go Cable

  25. Problem DiagnosisUsing In-Board Electronics • Apply “G” and Motor Should Operate • If Motor Runs Very Slow With Fast Flashing CFM LED - No Programming, Replace Module • Wrong CFM Indication or Flashes: Check Dip Switch Settings and 24 Volt Inputs • Check for Label Indicating Proper Part Numbers and Mnemonics

  26. Where is the BK Jumper?Old style A/H Interface Board

  27. New Variable Speed Interface Board

  28. The New Variable Speed Control Box

  29. Variable Speed A/H Wiring

  30. LVTB and BK Jumper

  31. Replace the Module Not the Motor/Module combinationReturn Analysis Confirms less than 10 Total Motor Failures

  32. Indoor Variable Speed MotorReplacement Modules

  33. Variable Speed Draft InducerTroubleshooter BoardPub No. 34-3404-01

  34. Variable Speed Module Programming • PC Card and Cable for Local Parts Distributor Programming • Four Blank Modules for 56 Variable Speed Applications • Reduced Replacement Inventory - Saves Money • Improves Your Responsiveness to the Dealer & Homeowner • Internet Software Updates • Availability - ??? ??? ??? • Limited Quantities

  35. Variable Speed Indoor Motor Programmer • Shipped with PC card, cables and instruction manual • Software to run the program will be downloaded through the Internet • The software will reside on the users PC • When new VS software is released for production the web site will be updated • Before the software is downloaded the user must agree to the LICENSING AGREEMENT GE HAS PROVIDED • FAILURE TO ABIDE BY THE AGREEMENT MAY RESULT IN LEGAL RECOURSE BY GE

  36. Variable Speed Outdoor Fan Is Module Replacement Desired?

  37. Replacement Module for New VSPD Outdoor Fan Motors?

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