Lennox 12L02 Collector Box Refrigerant The IDEC RH3B-ULAC24V is a

The IDEC RH3B-ULAC24V is a workhorse 3PDT (3 Form C) power relay engineered for industrial HVACR and automation systems where reliability is non-negotiable

Designed for precise fitment in York

Built with a Noryl enclosure

Common field symptoms include the furnace burners shutting off prematurely (short-cycling) or the blower fan running continuously while the heat remains off

Lennox 12L02 Collector Box Refrigerant The IDEC RH3B-ULAC24V is aAs a seasoned tech, you know that a cracked or restricted Lennox 12L02 Collector Box is a fast track to pressure switch trips and service call backs. This genuine OEM Lennox replacement part, also identified by part number 1242861, is engineered specifically for high efficiency gas furnaces where condensate management is critical. It serves as the primary transition point for combustion byproduct gases, ensuring proper drainage of corrosive moisture