Liebert 1A18660P1S Switch 322838-752 Set it to 'O' for

Set it to 'O' for the majority of heat pumps (energized in cooling) or to 'B' for specific brands like Rheem or Ruud that require the changeover relay to be energized in heating

or burner lockout

This assembly features a robust housing and high-temperature bearings to handle the thermal demands of high-efficiency gas-fired units

a different MEP series programmer with internal DIP switches may be required

these deep-pleated filters offer significantly more surface area than standard 1-inch variants

Liebert 1A18660P1S Switch 322838-752 Set it to 'O' forThe Liebert 1A18660P1S is a critical OEM liquid level float switch engineered for precision monitoring in high demand HVACR environments. Designed specifically for Liebert Challenger 3000 and IR humidifier assemblies, this direct replacement float switch (replaces part 1A18660P1) ensures operational integrity by managing fluid levels within tanks and drain pans. It functions by opening or closing electrical circuits when levels fluctuate outside of