User Manual Q&AAnswer
Jan 17, 2025 - 10:47 PM
To replace a Constant Torque ECM Blower Motor with a Permanent Split Capacitor (PSC) Motor and Variable Speed Control Board, follow these steps:
1. Turn off the power to the unit.
2. Verify that you have a Constant Torque Blower motor such as an X13® or SelecTech® Constant Torque ECM motor.
3. Note the terminal location and corresponding color of each wire that connects to the blower motor. Disconnect these wires from the motor.
4. Remove the old blower motor and take note of the shaft size, frame size, operating voltage, direction of rotation, and motor horsepower.
5. Install a new Permanent Split Capacitor (PSC) Blower motor with the specifications noted in Step 4. Properly ground the motor and install the capacitor in a safe location.
6. Identify a suitable mounting location with sufficient clearance or use the supplied self-drilling sheet metal screws to attach the mounting bracket.
7. If the terminals on the wires that were removed from the old motor are fully insulated or part of a molded plug, connect them to the matching terminals on the QwikSwap X3 board.
8. If the PSC motor leads do not have insulated terminals, use the provided insulated 1/4 inch female quick disconnect terminals to connect the PSC power leads to the corresponding output terminals on the QwikSwap board.
9. If the new blower motor has more than three speeds, use the highest, lowest, and one of the mid-range speeds. If it only has two speed taps, jumper the low- and medium-speed quick disconnect connectors on the QwikSwap board together and connect them to the low-speed tap on the motor.
10. Mount the QwikSwap board to its mounting bracket or mount it flat using the PCB backer board tabs/holes. Secure the board to the bracket using the supplied plastic clips.
11. Attach the thermistor to an evaporator return bend near the coil inlet. Route the thermistor wire to the evaporator and secure it using the supplied loop clamp and plastic ratchet rivet.
12. To activate a 3-minute delay after break, connect the R terminal of the QwikSwap X3 board to the red thermostat wire.
13. If using the optional QT6001 humidity sensor, follow the QT6001 installation instructions to connect the sensor.
14. Bundle any excess wires using the supplied tie wraps to avoid interference with the blower.
15. Reconnect the power.
For more detailed instructions and visuals, you can refer to the QwikProducts X3 Constant Torque ECM Blower Motors with a Permanent Split Capacitor Installation Instructions manual. Additionally, you can watch an online video installation tutorial at www.qwik.com/qwik-swap/ or chat with "Live Help" on their website for further assistance.
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