Rheem unit and the unit will not come on unless you hold down the contact then it works great what is wrong you just put on a new contact?

Answer 1

first, turn "fan on" see if fan run, if yes, turn fan back ot auto, and turn ac on. and again see the fan in door run? if yes check see if there is 24V come out to the contacter coil out side, (thermostate wire goes to the contacter coil to energine the coil). if yes. replace the contactor, if no, check see the thermostate wire broke or lose. in and out side.