Arrived at customers house for system not cooling. On arrival customer showed me to a Bosch communicating system. Customer informed me unit has been having cooling problems since day of installation. And on arrival air handler was running but condenser was not. Open condenser electric cabinet. No error codes were seen. After about five minutes unit attempted to start up. Fan was cycling for a while then unit was showing an E5 error code. The condenser bored then went blank. Waited about 15 minutes and power did not return. Cycled disconnect and breakers but the board still did not turn on. Confirmed 120 V from each leg it to ground. Across L1 and L2 was not even showing a volte though. A customer would like to again get a hold of company that installed unit. Feels that this is their issue. Suggested customer sign off on our maintenance plan. Customer agreed. Collected payment and signature and left. Thank you for choosing Total air! Customer would like receipt and write up sent via