Yesterday night, it was our first time to have cleaned our bath piping of Eco-cute (heat-pump type bath system). With seeing Manual, at first it was filled with water (warmer is recommended) till covering the inlet of water, and put into Java (detergent, cleaning media), next a built program "kannai senjo" was activated (it took 20 minutes). As finishing it, discarded the water with opening the stopper of the bathtub. In the next step, Kannai-senjo was activated again after filled with water. As waiting for 20 minutes, we could hear the finished announcement by system.
Easy but some tasks.
In addition, the water after kannai-senjo was not so dirty. The manual says the cleaning procedure should be every 6 months. However we did it after 4 years and 3 months use.
Reflection: Clean much frequently.