REMOVED THE BLOWER HOUSING AND CHECKED THE REHEAT COIL FOR ANY OBSTRUCTIONS. REINSTALLED AND CHECKED THE BLOWER WIRING. FOUND BOTH TO BE GOOD. CHECKED THE CONDENSING UNIT AND FOUND THAT THE LOCK ON THE SUCTION PORT WAS OFF AND ON THE GROUND. FOUND THE UNIT LOW ON CHARGE. INSTALLED 2.5lbs OF 410A REFRIGERATE. PRESSURES ARE AT 125/275. DELTA T OF 20 DEGREES. SPACE HAS COOLED DOWN 2 DEGREES.