The Heil Quaker ICP 1173636 Defrost Control Board is a critical OEM replacement engineered to regulate timing and temperature-based defrost cycles in high-efficiency heat pump systems. Built for heavy-duty field reliability, this ICP furnace control board manages the reversing valve and outdoor fan motor transitions to ensure evaporator coils remain clear of ice accumulation during low-ambient operation. This specific defrost circuit board includes selectable timing intervals of 30, 60, and 90 minutes, allowing technicians to calibrate the cycle based on regional humidity and local climate conditions. By replacing a failing 1173636 control board, you restore proper communication between the defrost thermostat and the compressor, preventing thermal overload and maintaining mechanical integrity. Designed as a direct drop-in for Heil Tempstar defrost boards, this unit supports multiple voltage paths and incorporates high-voltage safeties to match factory specifications for N4H, NXH, and T4H series condensing units.

Key Benefits

• Selectable Timing Intervals: Pin-jumpers for 30, 60, or 90-minute heat pump defrost cycles allow for precision tuning in the field.
• OEM Compatibility: Exact replacement for ICP 1173636, ensuring terminal markers and mounting footprints align perfectly with existing wiring harnesses.
• System Protection: Integrates logic to manage the reversing valve and outdoor fan, preventing short-cycling and protecting internal compressor components.
• Diagnostic Reliability: Built with robust circuitry to handle voltage fluctuations common in residential and light commercial HVAC applications.

Common Questions

What are the selectable defrost settings for this board?
The Heil Quaker ICP 1173636 features field-adjustable pins for 30, 60, and 90-minute cumulative compressor run times before initiating a defrost check.

Does this board replace the HK32AE001 or CEPL130524-01?
Yes, this is the current OEM revision and direct replacement for part numbers 1173636, HK32AE001, and 62YA04 found in many International Comfort Products units.

How do I troubleshoot if the board is failing?
Technicians should verify 24V power at the R and C terminals, then check for continuity through the defrost thermostat. If the board fails to energize the O/B terminal or stop the fan during a forced defrost test, the logic circuit is likely compromised.

Item is Non Cancelable / Non Returnable

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.