What E:13 Means
E:13 is one of the few entries in the service table that says outright it is not an appliance problem. The appliance operates without heater, the internal check reports water temperature too high - above 75 degrees Celsius - and the listed measure is a protective one, with the instruction to check the temperature of the water supply.
Common Causes of E:13
- A domestic hot water supply set above what the dishwasher expects
- The dishwasher plumbed to a hot feed running hotter than intended
- A cycle started immediately after a very hot draw-off at a nearby tap
🔧 One Safe Check You Can Try
Check how hot the water reaching the dishwasher actually is. The table blames the incoming supply rather than the machine, so a household hot water setting turned up high is the first thing to look at.
⚠ Why You Shouldn't Go Further Than That
- There is no problem to repair inside the machine, so a service call to chase E:13 usually ends with a conversation about the water heater rather than a part.
- Turning a water heater down affects every outlet in the house, and turning it too low brings its own hygiene considerations, so it is a change to make deliberately.
- Water arriving above 75 degrees is hot enough to scald at any tap on the same system, which is worth knowing about beyond the dishwasher.
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.
Technical Reference
- Code
- E:13
- Appliance
- JennAir dishwasher
- Maker documentation
- JennAir owner manuals and use & care guides
- Checked
- September 2026
Code meanings can change between control generations. Before acting on a code, match the full model number on your appliance's rating label against the manual for that model. We are an independent repair service, not affiliated with Whirlpool Corporation.