A.O. Smith FREZYA 600S Series, User Manual

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ENG 12
Functions of ECO System
ECO function helps save power consumption by sensing illuminance
around the unit. When the illuminance aroud the unit darkens at
night, the product automatically stops water heating and adjusts the
bringtness of display.
1. Turn on the ECO switch at the back side of unit.
2. The HOT water lamp will turn Amber.
3. When activated, the HOT water lamp will turn Green.
ECO SW ON (Day) -HOT water lamp: Amber
ECO SW ON (Night) -HOT water lamp: Green
Because Fitting/ Tubing/ Float valve / Etc. are consumable parts, when replacing filters, it is recommended to replace them too.
Before replacing filters, pre-carbon filter and Alkaline Filter must need to be flushed for 10 minutes.
Water Filtration Process
Diagram 2
Diagram 3