Heil Quaker ICP 1084197 Timer Board

The Heil Quaker ICP 1084197 is a critical HVAC OEM replacement part specifically engineered to handle blower motor timing and system sequencing in International Comfort Products (ICP) equipment. As the central interface for airflow management, this ST9120C5005 fan timer regulates the combustion blower and circulating fan to maximize heat exchange efficiency and prevent component stress during startup and shutdown cycles.

Designed for professional-grade reliability, the 1084197 serves as the primary wiring point for the furnace's electrical suite. Its solid-state circuitry monitors thermostat calls for heat and cool demands, providing precise control over fixed and field-adjustable delays. This Honeywell ST9120C5005 control board ensures the heat exchanger reaches optimal temperature before the blower engages and facilitates a post-purge cycle to extract residual thermal energy, maintaining the integrity of the gas furnace system control.

• Precise Fan Sequencing: Regulates the ignition sequence and blower timing to prevent cold air drafts during the initial call for heat.
• OEM Compatibility: A direct-fit ICP furnace control board that integrates seamlessly with existing wiring harnesses in Heil, Tempstar, and Comfortmaker units.
• Configurable Delays: Features field-adjustable jumpers or DIP switches to fine-tune fan-on and fan-off timing based on specific ductwork requirements.
• Auxiliary Terminal Support: Provides dedicated connection points for electronic air cleaners (EAC) and humidifiers, centralizing system expansion.
• Rugged Build Quality: Constructed to withstand the high-temperature environment of a furnace cabinet, ensuring long-term duty cycles without signal drift.

Common Questions:

Is this board a direct replacement for my original Honeywell ST9120C?
Yes, the 1084197 is the official ICP replacement for the ST9120C5005. Techs should confirm that the terminal layouts match the original board, as some regional variations may require minor lead adjustments.

Can I adjust the blower shut-off delay on this model?
This fan timer board typically allows for field-adjustable heat-off delays (often 60, 100, 140, or 180 seconds). Adjusting these settings helps balance comfort and efficiency by ensuring all heat is moved out of the plenum after the burners de-energize.

What are the symptoms of a failing fan timer board?
Typical failure modes include the blower not starting during a call for heat, the fan running continuously after the thermostat is satisfied, or intermittent relay chatter. Always verify line voltage and 24V transformer output before condemning the board.

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.