System not cooling. I found there to be two issues causing this. The first was that the contactor had failed so even when it got 24v it wouldnâ€™t pull in. The second issue is that the control board has a short on the common I have unhooked common and bypassed that part of the board allowing the unit to run for now but we will need to change this board out. The model and serial number is worn off from the unit so we have no way to order it now the customer said he thinks he has it somewhere in his paperwork and will find it and send it to us. The capacitor is also weak and needs to be replaced. The air handler has growth formed in it mainly on the blower wheel it should be cleaned. I did recommend considering replacement, for now we have decided to move forward with repairs. We will need to provide an estimate to change the capacitor as well as the control board on the condenser.