Choose Eco when the load matches its description and you can wait for its expected duration. An economy program may take longer; Eco, Eco Cold, and Eco 40-60 are not interchangeable names.
Check what the program supports
Check fabrics, soil level, maximum load, and options. Some settings may be fixed for that cycle, even if they are available in another program. Do not force a temperature or rinse that the appliance does not allow.
An everyday compatible load may fit Eco. Clothes that need different care, an excluded item, or contamination with its own sanitation guidelines require selecting the appropriate cycle, without deciding based only on the economy name.
What Eco 40-60 means
Within the framework of the European Union, Eco 40-60 refers to the program for normally soiled cotton declared washable at 40 °C or 60 °C in the same load. It is a regional definition established by the European Commission; it does not guarantee that the water stays at those two temperatures or describe all Eco programs in other markets.
Interpreting a long wash
Compare the duration with the program chart and the conditions allowed by the manual. The time may adjust during the cycle. Taking longer than a quick wash does not by itself indicate a fault, because its intended loads and cycles are different.
If the cycle stops progressing, does not finish, or shows a warning, distinguish that behavior from an expected long duration. First check whether rinse hold or another option is active. The settings for temperature and load size must be evaluated within the chosen program.
Reserve Eco for the load it supports and judge its progress against the expected duration for that program, not against a quick cycle.