The Johnson Controls R-3030-1 Reversing Relay is a high-performance pneumatic reversing relay engineered for precise signal inversion in complex HVAC control loops

This kit includes a high-density refrigerant filter element and precision-engineered O-rings

As a heavy-duty HVAC sequencer relay

verifying correct drafting before the ignition sequence initiates

Lennox 56K85 Control Board 340793-762 The Johnson Controls R-3030-1 ReversingThe Lennox 56K85 is a critical Integrated Modular Control (IMC) board designed specifically for managing the secondary gas valve in multi stage heating systems. This OEM Lennox replacement board (part number 56K85) serves as the Gas Vlv #2 control module, ensuring precise sequencing and timing for combustion cycles in heavy duty commercial rooftop units and high capacity furnaces. Built to withstand the thermal stresses of the cabinet environment, the