If the sensing bulb has lost its charge

this valve is a direct OEM match for numerous Lennox residential units

and E pneumatic actuators

simply swap any two of the three incoming power leads at the disconnect or terminal block

Aaon R78200 Valve 326058-758 If the sensing bulb hasThe Aaon R78200 Valve is a high performance 4 way reversing valve specifically engineered for 15 ton commercial HVAC units and heat pump systems. As a critical OEM replacement part, this Aaon R78200 ensures seamless transitions between heating and cooling cycles by precisely redirecting refrigerant flow. Designed for heavy duty commercial HVAC applications, this valve features a robust construction that minimizes pressure drops, enhancing overall