Is there a rest button for rheem 3 ton air handler

before you replace the cap and contactor, manually operate the contactor, and see if the unit runs, if it does then go to the furnace unit and check the safety float switch on the evaporator drain pipe to see if the drain is clogged, do this by gently pulling out the switch and look inside the pipe to see if water is draining, if not take the pipe off and shoot some compressed air in the pipe to clear it then pour in a small amount of bleach into the pipe after you have reassembled it, Make sure the unit is off so the bleach doesn't shoot back up on you. then turn the unit back on and wait five minute to see if that worked. before you replace the cap and contactor, manually operate the contactor, and see if the unit runs, if it does then go to the furnace unit and check the safety float switch on the evaporator drain pipe to see if the drain is clogged, do this by gently pulling out the switch and look inside the pipe to see if water is draining, if not take the pipe off and shoot some compressed air in the pipe to clear it then pour in a small amount of bleach into the pipe after you have reassembled it, Make sure the unit is off so the bleach doesn't shoot back up on you. then turn the unit back on and wait five minute to see if that worked.