Carrier HN61KK041 Relay

The Carrier HN61KK041 Low Pressure Relay is a specialized 3-pole pilot duty component engineered for precise monitoring of low pressure thresholds in commercial and residential HVACR systems. Operating with a 120V 50/60Hz coil and rated at 125VA, this relay serves as a vital safety interlock, preventing compressor short-cycling and potential mechanical failure due to insufficient refrigerant charge or airflow restrictions. As a genuine OEM Carrier replacement part, it ensures seamless integration with existing control boards and wiring harnesses, maintaining the factory-specified response times required for system protection. This pilot duty relay is frequently utilized in gas furnaces to supervise pilot flame pressure and in AC units to verify suction line stability, automatically interrupting the 24V signal to the contactor if conditions fall out of range. Its compact footprint is ideal for high-density replacement HVAC relays in tight control cabinets, providing consistent switching performance across 125/250V lines for long-term operational reliability.

• Optimized System Safety: Provides a critical failsafe by disconnecting power during low pressure events to prevent compressor damage.
• Precision Pilot Monitoring: Specifically designed to manage pilot flame pressure logic in specialized Carrier furnace applications.
• OEM Compatibility: Guaranteed fit for Carrier, Bryant, and Payne equipment, eliminating the risk of mismatched electrical ratings.
• Robust Electrical Rating: Features a high-quality 120V coil capable of managing 125VA inductive loads for industrial-grade durability.

What causes a low pressure relay to trip frequently?
Repeated tripping typically points to a refrigerant leak, an obstructed evaporator coil, or a failing blower motor. If the Carrier HN61KK041 is chattering or failing to close despite adequate system pressure, the relay internal contacts may be pitted or the coil winding may be compromised.

Can I use this relay as a substitute for a high-pressure cutout?
No, this is specifically a low pressure relay. Its switching logic and setpoints are calibrated for suction-side protection or pilot verification. Always verify the part number HN61KK041 against your unit's schematic before installation.

How do I test the HN61KK041 during troubleshooting?
Check for 120V at the coil terminals while the system is calling. Verify continuity across the poles when the relay is energized. If you are reading 24V at the 'X' terminal on compatible Carrier package units, the relay has effectively locked out the circuit due to a detected fault.

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.