Heil Quaker ICP 1178203 Crankcase Heater

The Heil Quaker ICP 1178203 Crankcase Heater is a critical OEM replacement part designed for high-voltage industrial and commercial HVAC applications. Operating at 480 Volts and delivering a steady 70 Watts of thermal output, this band-type heater provides the necessary heat to the compressor crankcase during the off-cycle. By maintaining the oil temperature above the refrigerant's saturation point, it effectively prevents liquid refrigerant migration and oil dilution, which are primary causes of premature compressor failure. This specific model is a direct fit for ICP (International Comfort Products) family brands, including Heil, Tempstar, Comfortmaker, and KeepRite, ensuring seamless integration with existing 480V control circuits. For technicians troubleshooting tripped breakers or blown fuses in cold-weather startups, replacing a failed crankcase heater is a standard preventative measure to protect the compressor from liquid slugging and ensure reliable lubrication across all seasons.

Key Benefits:

• Matches OEM specifications for precise fitment on ICP compressor shells.
• Operates on 480V systems, typical for commercial HVAC equipment and industrial chillers.
• Prevents refrigerant-oil mixing to maintain lubricant viscosity for smooth startups.
• Reduces mechanical stress by prohibiting liquid slugging in the compressor cylinders.
• Durable 70W heating element provides consistent thermal transfer in extreme ambient conditions.

Common Questions:

Why is my 480V crankcase heater not getting hot?
Testing should begin with a continuity check using a multimeter. If the heater shows open resistance (OL), the internal element is likely burnt out and requires immediate replacement. If resistance is present, verify that the auxiliary contacts on the contactor are closed during the off-cycle to provide the required 480V power.

Can I use a lower voltage heater if 480V isn't available?
No. Using a heater with a lower voltage rating on a 480V circuit will cause an immediate electrical failure and poses a safety risk. Always match the system voltage to the component rating to ensure the 70W output is achieved without overloading the circuit.

When should the crankcase heater be energized?
In most standard wiring configurations, the 1178203 heater is energized only when the compressor is not running. This keeps the oil warm while the system is idle, preventing refrigerant from condensing into the crankcase oil. Once the compressor starts, its own operating heat maintains the necessary temperature.

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.