Customer complaint alert on thermostat out door sensor not working Upon arrival located thermostat error was not present, gained access to tech option in thermostat found that error has been repeatedly going on and off. Located condenser on side of house found the led on the condenser (outdoor) control board has failed LED does not work, continued inspection found burn marks on the back of the board, the transformer has also melted partly and is intermittently working. System is running at this time. Will need to replace the condenser (outdoor) transformer and the condenser (outdoor) control board. Customer would also like a surge protector put on the condenser when board and transformer is installed. Will have to return to install condenser control board and transformer. Follow up 2/24/23 Replaced inverter board and power conditioner/transformer. Ran system test successfully. Home owner approved surge protector installation. System operating normally at this time.