BLOGS

After a hot dishwasher rinse, the bottom collection sump cools rapidly and its walls instantlycondense water. The photoelectric level switch cannot tell "condensation" from "real water"and sends a false full signal to the mainboard — the inlet pump stops, the drain pump runsdry. Long-term detergent

Ultrasonic humidifiers run at near-saturated humidity internally. The photoelectric levelswitch lens itself condenses water — meaning it reads "always has water" and never shutsdown on low water, so the mist plate burns out from dry vibration. Float balls, meanwhile,easily jam sideways in tall narro

A floor washer's dirty tank collects floor wastewater plus dust lint plus detergent — let it sitfor a few hours and a layer of bacterial film floats on top. A float switch jams within threedays. A photoelectric lens covered in oily grime stops triggering on full, and dirty water backsup into the mot

Semi-automatic coffee machines generate boiler steam with every extraction, so the innerwall of the water tank is permanently coated with a layer of condensation plus coffee-oil mist.After about six months, photoelectric level switches start reporting "tank full" when it is empty,or "tank empty" whe

The two most common complaints from household water dispenser users are identical:water overflowing onto the floor, or the heating tank dry-burning with no automatic shutdown.Tear the machine down and the root cause is almost always the same — level detection hasfailed. Traditional float switches ac