HVAC/R Performance Products
Indoor Air Quality Products
Training / Certifications
QwikSwap® X1 & X3 Troubleshooting Steps
QT6100 OEM Constant Torque ECM w PSC Board
| PROBLEM | SOLUTION | ||
| I don’t know if I need to use the R terminal on the QwikSwap Board (X1 or X3). | Use of the R terminal on the QwikSwap (X1 or X3) in most installations is optional (some installations will require the use of the R terminal if the air handler fan control board outputs a DC voltage or if there is a resistor in the control wiring). Connecting the R terminal activates a delay that keeps the fan running for 3 minutes after the thermostat tells it to shut off. If you want this delay connect the R terminal to the 24 VAC terminal on the low voltage transformer (typically the red wire that also goes to the thermostat R terminal) and remove the jumper next to the R terminal. |
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| I connected the R terminal but now the QwikSwap (X1 or X3) will not turn off. |
Connecting the R terminal activates the 3 minute delay after break feature. Sometimes the blower control board in the air handler has an additional delay that adds to the 3 minute delay of the QwikSwap. If you wish to disable the 3 minute delay on the QwikSwap, install the jumper on the two pin header next to the R terminal. |
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I have read all of the troubleshooting steps but I still cannot solve the problem I am having. |
Using insulated test leads carefully measure and record the voltage across the terminals listed below (measure for both AC and DC) and call: Mainstream Engineering for technical support (321-631-3550). |
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| Measure Across These Terminals |
Normal Measured Voltage “Expected”Voltage |
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| C and 1 (if there is a wire on 1) |
20-30 AC or DC | ||
| C and 2 (if there is a wire on 2) |
20-30 AC or DC | ||
| C and 3 (if there is a wire on 3) |
20-30 AC or DC | ||
| C and 4 (if there is a wire on 4) |
20-30 AC or DC | ||
| C and 5 (if there is a wire on 5) |
20-30 AC or DC | ||
| C and R (if there is a wire on R) |
20-30 AC | ||
| L and N | 120-240 VAC | ||
| Speed and COM | 120-240 VAC | ||
For more details or information about QwikSwap visit www.qwik.com
QwikProducts® and QwikSwap® are registered trademarks of Mainstream Engineering Corporation, Rockledge, Florida 32955,
321-631-3550
• © 2022 Mainstream Engineering Corporation
• All QwikProducts® are made in the USA. Patents Pending
Mainstream Engineering Corporation
1-800-866-3550
www.qwik.com
5010162_REV-B / 1201820002
Documents / Resources
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QwikProducts QT6100 OEM Constant Torque ECM w PSC Board [pdf] Instructions QT6100 OEM Constant Torque ECM w PSC Board, QT6100, OEM Constant Torque ECM w PSC Board, Constant Torque ECM w PSC Board, Torque ECM w PSC Board, ECM w PSC Board, PSC Board, Board |
