What water can I use in my Optimyst fire? Use filtered water whenever possible. Don't use de-ionised water. The auto shut off requires the minerals in the water to detect water level in the sump.
#2 Why does my Dimplex Opti Myst keep turning off?
The mist cuts out intermittently -Check that the transducer is seated correctly in the sump and that the fan filter is positioned correctly.