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These two part numbers refer to the same technical specification and are 100% interchangeable in the field
The York S1-024-35619-000 is an essential 24V on-break relay designed to provide reliable compressor short cycle protection
Which models use the 306F Energy Cutout
eliminating the need for regular packing adjustments
Carrier HH18HA504 Limit Switch 321894-708 These two part numbers referThe Carrier HH18HA504 Limit Switch is a critical OEM replacement part designed for high limit temperature monitoring in HVAC furnaces. This automatic reset limit switch is engineered to open the burner control circuit when internal plenum temperatures reach the 180F to 220F threshold, effectively preventing heat exchanger damage and ensuring safe operational cycles. As a specialized furnace safety switch, this component features a cut out temperature
US$ 49.00
US$ 29.00
US$ 49.00
