MarnusNel

I have installed a geyser wise timmer thermostat in my geyser today and had a qeustion My geyser is Vertically installed on the wall and the thermostat that reads the Temp is at the bottom , after playing around I found that if my geyser is at 60 degrees Celsius and the wife washes dishes (10/15 Liters of hot water) the geyser Temps drops instantly within 5 min to 16 degrees Celsius on the geyser wise panel, jet there is still hot water in the geyser ,which I only can imagine is that when the cold water enters at the bottom where the thermostat is (10/15Liters) is thinking that the whole geyser is ice cold meanwhile just above that cold water there is still hot water but can not be detected due to the element sitting at the bottom picking up the new cold water, how can I fix this without removing my geyser and turning it horizontal?