: Defrost in progress. This is a normal functional state, not an error. 🧼 Maintenance Best Practices
: Such devices are commonly used in industrial, commercial, or residential settings for heating, ventilation, and air conditioning (HVAC) systems, refrigeration, or other temperature-sensitive applications. elstat ems 55 advanced user manual new
A failed update voids the warranty. Only perform this if the unit has a persistent bug logged with Elstat support. : Defrost in progress
: In the test menu, use Down for 2.0 , Up for 3.0 , and Defrost for 4.0 . Press Set and Defrost simultaneously to start relay tests ( rel ) for the fan, lights, and compressor . Resetting the Controller ("Key Dance") or residential settings for heating