Heil Quaker ICP 1160717 Defrost Board

The Heil Quaker ICP 1160717 Defrost Board is a critical OEM replacement part designed to regulate the defrost cycle in residential and commercial heat pump systems. Engineered for high-reliability performance, this defrost control board is a direct functional equivalent to the ICM300, featuring the same compact footprint as the original Carrier 621 series controls. It manages time-and-temperature defrost logic to prevent evaporator coil icing, ensuring your system maintains peak thermal efficiency during low-ambient operations.

This HVAC circuit board operates on a standard 18-30 VAC input and provides pin-selectable defrost intervals of 30, 60, or 90 minutes to match specific regional climate demands. The ICP 1160717 integrates a fixed 10-minute defrost termination and a 500 ms power-on reset time. Designed for easy field diagnostics, the board includes test terminals that allow technicians to reduce timing by 256x for rapid sequence verification. Whether you are servicing Heil, Tempstar, or Comfortmaker equipment, this board provides the precision switching needed to protect the compressor and optimize system longevity.

Key Benefits:

• Universal Compatibility: Serves as a direct replacement for Heil Quaker, Tempstar, and ICP part numbers 1160717 and 1052757.
• Selectable Timing: Field-adjustable jumper pins allow for 30, 60, and 90-minute intervals to maximize heat pump performance.
• Robust Relay Design: Features a high-quality SPST normally open relay rated for 1 amp at 30 VAC.
• Quick Diagnostics: Integrated test mode shortens cycle times for immediate on-site troubleshooting.
• Simplified Wiring: Follows standard industry terminal designations (DFT, OUT, COM, 24VAC) for contractor-grade installation.

Common Questions:

Is the 1160717 compatible with standard defrost sensors?
Yes, this board is designed to interface with standard defrost thermostats and sensors. When replacing older boards with an RST terminal, simply tie the RST wire to the common terminal as per technical guidelines.

How do I initiate a manual defrost for testing?
You can initiate a speed-up cycle by shorting the test terminals. This allows a veteran technician to verify relay engagement and heater operation without waiting for the full timing interval to elapse.

Can I use this board to replace an ICM300?
Yes, the ICP 1160717 and the ICM300 are identical in function and form, offering a seamless swap for existing HVAC control setups.

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.