Upon arrival meet customer at the package unit. He opened the unit and said couldn’t figure it out why unit was cooling. After finishing diagnosing found out that blower wasn’t kicking on . Checked the wiring and found the L connected at t4 which is wrong and it wasn’t getting power . Reconnected the wires and fan came on. Blower fan was really dirty and the pressures on head side were high at 420 post and was making compressor work hard. Customer need to clean blower wheel and condenser coil for unit to operate better or otherwise it will damage the compressor. Customer would like to schedule an appointment for cleaning . Pls call him back.