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Lennox 23X17 Control Board 321894-708 Which boiler models work with

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Description

Which boiler models work with the 510-312-015

Technical specs confirm its construction uses high-dielectric insulation to prevent voltage leakage and "ghost" signals that trip sensitive flame sensors

the installation of sump heater HTR15994 is necessary to manage refrigerant migration and ensure reliable startup

By securing the unit’s front section

this switch features precise 117/054 PSI settings

Lennox 23X17 Control Board 321894-708 Which boiler models work withThe Lennox 23X17 Control Board, also identified as the Lennox 620244 02, is an essential demand defrost control designed for high performance heat pump systems. Built to replace previous iterations such as the LEN620244 02, this board integrates multiple critical functions into a single 24V module, including demand defrost logic, a defrost relay, and an anti short cycle timed off control. It features a sophisticated pressure switch system lockout

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