ensuring long-term seat integrity and flow control

and aging compared to standard Buna-N or neoprene seals

Whether you are troubleshooting a unit that is short-cycling or addressing a manual reset lockout

it is specifically configured with Lennox-specific mounting and terminal spacing

specifically the 272839-001 series

Johnson Controls A72AA-2 Temperature Control Freon ensuring long-term seat integrity andThe Johnson Controls A72AA 2 Temperature Control is a heavy duty, two pole temperature switch designed for reliable refrigeration and heating operation. This DPST (Double Pole, Single Throw) controller features a vapor charged sensing element that ensures precise response to thermal changes across its 15F to 55F ( 9C to 13C) range. Built with a 6 foot capillary tubing and a 3 8" x 3" sensor bulb, it provides the versatility needed for remote mounting