. Upon arrival spoke with the customer. She said the outdoor unit cut off and on the other day and then cut off and didn’t come back on. Turned the thermostat to heat. Went to indoor unit. The filter is clean. The coil is clean. Leak searched the indoor coil and didn’t find any leaks. The blower housing is clean. All wiring is good and tight. Found I had a call for the outdoor unit to come on. Went to outdoor and it was off. Had 24 volts going to the board but not coming back out. Found control board bad. Called carrier and they had one in stock. Customer approved quote. Went and picked up board and came back. Installed control board and surge protector. The outdoor unit started up. The Refrigerant pressures were 110/398. The compressor amped at 5.09. The condenser fan motor amped at .63. Both are in range. The system is working properly.