2007 Trane AC/Coil & Gas furnace - Not Cooling System not cooling due to age. System has a failed main control board. The thermostat sends a single to the board but it does not respond to cooling mode. I tried the system in heat mode and the system started to come on but was reading over 30 volts. The heat exchanger is cracked at the far left cell, large crack. The blower wheel is dirty and blower motor is over amping. After going over the age, condition, and cost of temporary repairs, the homeowner requested we send out an install supervisor. I scheduled this with dispatch for this afternoon. Thank you for choosing T.E. Certified, have a great!