What F4E3 Means
F4E3 is published as a heating error and sits beside F4E2 in the same family. Both concern the dishwasher failing to reach or hold the water temperature the cycle calls for.
Common Causes of F4E3
- Transient fault cleared by a reset
- Heating element open or failing under load
- Element relay on the control failed
- Thermistor reading incorrectly
- Supply voltage low
🔧 One Safe Check You Can Try
Reset the control by cutting power for thirty seconds - unplug the dishwasher if it is on an outlet, or switch off its breaker if it is hard-wired - then restore power and run a short cycle. Run a normal cycle afterwards and judge it by result rather than by the display: warm tub and dry dishes at the end means heat is working. If the code returns, note whether it appears early in the cycle or during the dry phase, because an element that fails under load behaves differently from one that is open from the start. Both possibilities are tested with the power isolated, under the tub, so the next step is a service call.
⚠ Why You Shouldn't Go Further Than That
- The element and its terminals are live during a cycle and sit beneath the tub.
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.