Supco Q103 Sequencer
When you're out in the field dealing with electric furnace staging or heat pump auxiliary heat cycles, the Supco Q103 Sequencer is a reliable, professional-grade solution for managing HVAC heating elements and blower motors. This 24V control circuit device is the direct replacement for 1056789, as well as several Carrier, Goodman, and White-Rodgers components. Engineered with a DPST configuration, it features a timed heater sequencer mechanism that ensures precise activation. The M1-M2 contacts are specifically designed to turn on first and turn off last, providing the essential staged startup required for system safety and electrical load management. With a field-proven sequencer timing delay of 1–20 seconds "on" and 40–110 seconds "off," this unit eliminates the risk of rapid cycling and power surges in residential and commercial air handlers. This 24V heat sequencer is a staple for veterans who need a rugged, multi-voltage compatible control for gas, oil, or electric heating applications.
Key Benefits- Universal Compatibility: Serves as a direct technical cross-reference for Mars 33244, Carrier HQ1056789, and Goodman BT1256504.
- Staged Load Control: Prevents electrical circuit overloads by staggering the activation of high-draw heating elements.
- Industry Standard Safety: Rated for up to 25A resistive at 240V and UL/CSA approved for critical heating system infrastructure.
- Robust Construction: Built to withstand the high-temperature environment of an air handler cabinet while maintaining consistent timing.
What is the primary function of the Supco Q103 in a furnace?
It acts as a mechanical delay switch that stages the power to heating strips. This prevents the initial "cold blast" from the blower and stops the home’s electrical system from seeing a massive current spike all at once.
Can this replace a single-switch sequencer?
Yes, the Q103 is a versatile 2-switch (DPST) model. Always check your wiring diagram to ensure the terminal markings (M1, M2, M3, M4) align with your specific load requirements.
What causes these sequencers to fail in the field?
Most failures occur due to carbon buildup on the physical contacts or a weakened bimetal heater. If you notice heating elements staying on after the thermostat is satisfied, or failing to activate entirely, the sequencer is likely the culprit.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Original: $15.72
-65%$15.72
$5.50Supco Q103 Sequencer
When you're out in the field dealing with electric furnace staging or heat pump auxiliary heat cycles, the Supco Q103 Sequencer is a reliable, professional-grade solution for managing HVAC heating elements and blower motors. This 24V control circuit device is the direct replacement for 1056789, as well as several Carrier, Goodman, and White-Rodgers components. Engineered with a DPST configuration, it features a timed heater sequencer mechanism that ensures precise activation. The M1-M2 contacts are specifically designed to turn on first and turn off last, providing the essential staged startup required for system safety and electrical load management. With a field-proven sequencer timing delay of 1–20 seconds "on" and 40–110 seconds "off," this unit eliminates the risk of rapid cycling and power surges in residential and commercial air handlers. This 24V heat sequencer is a staple for veterans who need a rugged, multi-voltage compatible control for gas, oil, or electric heating applications.
Key Benefits- Universal Compatibility: Serves as a direct technical cross-reference for Mars 33244, Carrier HQ1056789, and Goodman BT1256504.
- Staged Load Control: Prevents electrical circuit overloads by staggering the activation of high-draw heating elements.
- Industry Standard Safety: Rated for up to 25A resistive at 240V and UL/CSA approved for critical heating system infrastructure.
- Robust Construction: Built to withstand the high-temperature environment of an air handler cabinet while maintaining consistent timing.
What is the primary function of the Supco Q103 in a furnace?
It acts as a mechanical delay switch that stages the power to heating strips. This prevents the initial "cold blast" from the blower and stops the home’s electrical system from seeing a massive current spike all at once.
Can this replace a single-switch sequencer?
Yes, the Q103 is a versatile 2-switch (DPST) model. Always check your wiring diagram to ensure the terminal markings (M1, M2, M3, M4) align with your specific load requirements.
What causes these sequencers to fail in the field?
Most failures occur due to carbon buildup on the physical contacts or a weakened bimetal heater. If you notice heating elements staying on after the thermostat is satisfied, or failing to activate entirely, the sequencer is likely the culprit.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
Product Information
Product Information
Shipping & Returns
Shipping & Returns
Description
When you're out in the field dealing with electric furnace staging or heat pump auxiliary heat cycles, the Supco Q103 Sequencer is a reliable, professional-grade solution for managing HVAC heating elements and blower motors. This 24V control circuit device is the direct replacement for 1056789, as well as several Carrier, Goodman, and White-Rodgers components. Engineered with a DPST configuration, it features a timed heater sequencer mechanism that ensures precise activation. The M1-M2 contacts are specifically designed to turn on first and turn off last, providing the essential staged startup required for system safety and electrical load management. With a field-proven sequencer timing delay of 1–20 seconds "on" and 40–110 seconds "off," this unit eliminates the risk of rapid cycling and power surges in residential and commercial air handlers. This 24V heat sequencer is a staple for veterans who need a rugged, multi-voltage compatible control for gas, oil, or electric heating applications.
Key Benefits- Universal Compatibility: Serves as a direct technical cross-reference for Mars 33244, Carrier HQ1056789, and Goodman BT1256504.
- Staged Load Control: Prevents electrical circuit overloads by staggering the activation of high-draw heating elements.
- Industry Standard Safety: Rated for up to 25A resistive at 240V and UL/CSA approved for critical heating system infrastructure.
- Robust Construction: Built to withstand the high-temperature environment of an air handler cabinet while maintaining consistent timing.
What is the primary function of the Supco Q103 in a furnace?
It acts as a mechanical delay switch that stages the power to heating strips. This prevents the initial "cold blast" from the blower and stops the home’s electrical system from seeing a massive current spike all at once.
Can this replace a single-switch sequencer?
Yes, the Q103 is a versatile 2-switch (DPST) model. Always check your wiring diagram to ensure the terminal markings (M1, M2, M3, M4) align with your specific load requirements.
What causes these sequencers to fail in the field?
Most failures occur due to carbon buildup on the physical contacts or a weakened bimetal heater. If you notice heating elements staying on after the thermostat is satisfied, or failing to activate entirely, the sequencer is likely the culprit.
Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.
