- clean and flush condensate drain line - Install PVC drain trap outside - replace in-line drain cleaner cartridge - replace 24 V contactor - Replaced dual run capacitor - 10% discount No cooling and outdoor unit making loud noise. Upon arrival found float switch tripped due to clogged drain, cleared out drain line at no charge. Contactor making a loud buzzing sound and chattering, which was the cause of the noise, also found weak capacitor, in-line drain cleaner cartridge needs to be changed, and drain line was buried underneath the dirt. Gave client solutions for issues with system. Client chose to go ahead and fix all issues. Cut back drain and installed a P-trap above the ground, replaced in-line drain filter cartridge, replaced capacitor, and replaced contactor. Cycled and tested system, all operations OK at this time. Need to call and schedule tuneup ASAP for this client.