Performed 1 system diagnostics on a 2017 Lennox system that cools the upstairs. I found that the capacitor had failed on the outdoor unit and the outside condenser coil was impacted with dirt. I also found that the contactor on the outdoor unit had pitted contacts and the air handler capacitor was outside of the manufactures specifications. I went over the findings with the homeowner and with their permission; I replace the parts mentioned above and rinsed off the outdoor condenser coil. The refrigerant pressures were good. The unit was operating at the end of the service call. I also replaced the filter with a customer provided air filter. Unit no longer concerned by the manufactures warranty. I emailed the homeowner flood protection estimate.