Contacted resident Discussed the residents issues Turned stat to cooling and lowered set point Went to roof Unit was not running Checked for control voltage Had 24 v on red Found yellow and white wires tied together. Found units cooling wire with a wire nut on it Jumped red to units cooling wire unit started running Checked voltage between stat red and yellow found no voltage telling me the thermostat was sending a signal for cooling Removed yellow wire from white Hooked to units cooling wire Unit started running by thermostat control Checked temperature split Supply air was 48 Return air was 69 Split of 21 good Unit running properly Collected $147