4. Clean the DHW inlet filter and then, return it.
Do not forget to close the drain point.
Make sure that there is no damage/foreign
substance on a O-ring.
1. Unplug the boiler.
When the boiler is completely off, start to clean
the water inlet filter.
2. Close the water supply valve and then,
open the water tap and allow the water drain.
(About 1~2L)
Be careful since the water could be hot.
3. Turn the handle of the DHW inlet filter to the
left and then, remove it by using a coin.
Be careful since the remaining water could
be hot.
5. Connect the power supply and then, open the water supply valve and turn on the boiler by
pressing the CH mode button( ) or DHW mode button( ).
Cleaning the DHW Inlet Filter(Recommended more a time per year)
18
After cleaning process, please make sure that if any water leakage happens or not by
opening and closing water tab.
Caution
DHW inlet filter
COIN
Summary of Contents for R331
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