The short answer
Because most modern machines dry with residual heat rather than with a separate element, poor drying is frequently a rinse-aid and loading issue while genuinely cold washing is a heater issue. The ranking below keeps those apart. On a Avanti dishwasher the order below is what makes this page worth reading — the causes are ranked for this kind of machine, not listed alphabetically.
Recognising it
- Dishes are greasy and the interior is cold at the end — That is a wash-heat fault. Grease needs temperature, and its absence is the clearest indicator.
- Dishes are clean but soaking wet — A drying fault, which on most machines is rinse aid and airflow rather than a heater.
- Plastics are wet while china is dry — Entirely normal on a condensation-drying machine — plastic does not hold the heat that evaporates the water.
- The cycle runs much longer than it used to — The machine is waiting to reach a temperature it cannot reach.
- NEAR MISS — the machine does not fill at all — Then heating is not the issue; the fill is, and that is a different page.
Ranked causes on this platform
- Rinse aid empty or set too low — First for the drying complaint, and it is the one people dismiss. Rinse aid changes how water sheets off the surface; without it the film stays put no matter how hot the machine got.
- Loading blocking heat and airflow — Second. Cups that trap water, items shielding others and an over-packed lower basket all defeat drying on a machine that dries by residual heat.
- Flow-through heater or element failure — Third, and this is the genuine hardware cause: the heater simply stops working, the machine keeps running, and everything comes out cold and greasy.
- Thermostat or sensor misreading — Fourth. A sensor reporting water as already hot prevents the heater ever being energised, so the machine behaves perfectly and washes cold.
Working through it
- Open the door immediately at the end of a cycle — Steam and hot dishes mean the wash heated and the fault is drying. A cold, damp interior means the water never got hot.
- Check the rinse-aid reservoir and its setting — Free, thirty seconds, and it fixes a large share of drying complaints on its own.
- Look at whether plastics alone are wet — If only plastics are wet, nothing is wrong with the machine and no repair is needed.
What you can do yourself
- Fill the rinse-aid reservoir and raise the dosing setting — Use the dial inside the reservoir cap. Give it a few cycles before judging the result.
About 10 min
- Reload with drying in mind — Angle cups and bowls so water runs off, keep items apart, and do not stack the lower basket above the spray path.
About 10 min
- Run the hottest programme with the machine empty — Feel the interior straight after. This separates a heating fault from a loading habit conclusively.
About 90 min
- Clean the filter and the spray arms — Poor water circulation reduces heat transfer as well as cleaning, so this matters for both symptoms.
Tools: soft brushAbout 25 min
- Open the door slightly at the end of the cycle — On a condensation-drying machine this is the manufacturer-intended way to finish drying, not a workaround.
About 5 min
- STOP before testing the heater or the thermostat — Both are mains-side components in a wet cabinet.
Working on this safely
Safety
Turn the circuit off and confirm it, then close the supply valve. Anything you drain will come out faster than expected, so have a shallow tray ready. If water has reached the control board or the motor, stop there and call: a dried-out board can work for a week and fail closed afterwards.
The line between a fix and a call
Book a visit when the interior is genuinely cold at the end of a hot programme with the filter and spray arms clean — that is the heater or its control, and both need the machine opened up. Say whether the dishes are greasy or merely wet: greasy means the wash never got hot, wet means the wash was fine and the drying is the issue, and those two send a technician to different parts of the machine.
Other faults on this appliance
Generalized information
This page is generalized across the Avanti dishwasher line: it covers the appliance class rather than one family or one model line. Where a family- or model-specific page exists for your unit it is the better answer and it is linked from this page — check the model label before you rely on anything here. What is deliberately not on this page: wiring colours, board part numbers, torque figures and teardown order, all of which differ by family and belong on the page for that family.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
