What F3 Means
F3 fires when the control board measures tub water above 85°C (185°F) — far hotter than any normal wash calls for. The usual culprits are a heating element that's stuck on, a temperature sensor giving a bad reading, or household hot water arriving too hot to begin with.
Common Causes of F3
- The heating element stuck in the on position, continuing past its safe cutoff
- An inaccurate reading from a failing temperature sensor
- The household hot water supply itself running too hot
🔧 One Safe Check You Can Try
Run your kitchen hot tap and see how hot it gets — scalding tap water usually means the household water heater is set too high, which can set off F3 even when the DishDrawer itself is fine; dialing the heater back to around 120°F (49°C) clears this particular cause without any repair.
⚠ Why You Shouldn't Go Further Than That
- An element stuck in the on position is still carrying live voltage inside a wet tub, so testing it without cutting power completely is a real electrocution risk.
- At 85°C or above, this is genuinely scald-hot water, so opening the drawer or reaching in before things cool down risks a serious burn.
- A too-hot water supply and a genuinely failed element look identical from the outside, and swapping the element when the water heater setting was the real issue is an expensive, common misdiagnosis.
- Since the sensor and the heating circuit share the same wiring path, poking at one while testing the other risks creating a second, unrelated problem.
- The heating circuit enters the tub through sealed grommets, and once those have been disturbed they are the usual place a drawer starts seeping from afterwards.
Opening a panel to inspect or repair something yourself doesn't automatically cancel your manufacturer's warranty — but it can risk accidental damage, and some manufacturers do have specific service conditions. Check your product's warranty terms, or ask us, before deciding.