Why is my furnace cycling on this high limit switch

It delivers an on-timing of 1-20 seconds and an off-timing of 40-110 seconds on the M1-M2 terminals

provided the drive is programmed to match the motor's nameplate amperage and frequency requirements

the 3JN provides superior resistance to oil and chemical exposure compared to standard EPDM alternatives

this indoor evaporator coil maximizes heat transfer efficiency while maintaining structural integrity within the air handler

York S1-331-03759-000 Board 320734-701 Why is my furnace cyclingThe York S1 331 03759 000 is an OEM replacement board specifically engineered for inverter control in high efficiency York YHM series modulating heat pumps. As a critical component in the outdoor units electrical cabinet, this inverter control board kit handles the complex task of modulating power from DC to AC, allowing the compressor and fan motors to operate at variable speeds. This precise HVAC system control is what maintains consistent indoor