How Did a Summer Tune-Up Get My Nest Working in Chapel Hill?
Chapel Hill · August 2026 · Manny, Jeorell & Dexter · From our service records
What we found and did
During a recurring cooling maintenance visit for two systems at a Chapel Hill home in the 27516 area, Manny, Jeorell, and Dexter found bad R/C conductors cutting power to the 1st floor Nest thermostat, along with a system running low on charge and a weak outdoor capacitor. On the 1st floor system they re-wired the bad R/C conductors to restore Nest power, washed the outdoor coil, flushed the drain line and added pan tablets, and bypassed the return outdoor sensor. On the 2nd floor system they washed the outdoor coil, checked electrical components and refrigerant charge, and verified the drain pan and line. They recommended adding R-410A refrigerant to both systems, replacing the weak outdoor dual run capacitor (35+5 µF), a blower wheel pull and clean for heavy dirt matting restricting airflow, and inspecting and re-wiring the outdoor sensor module on the return box during fall maintenance.
Result
Both systems were left operational and cooling, with a Delta T of 18 on the 1st floor (72 return, 54 supply) and 20.3 on the 2nd floor (76 return, 55.7 supply).
