Today's job

DaikinRXS24/FTXS24 mini-split system

Code E3 · Inverter ductless mini-split (R-410A) · medium

A laundromat's back-office mini-split keeps dying on busy afternoons. The remote controller diagnostic shows E3, and the owner has just been power-cycling it to limp through the day.

Based on

Daikin error-code database — E3 (high pressure switch actuation)HVAC School — AC Pressures, Subcooling and Superheat