The short answer first
On the WDF dishwasher this symptom is usually the drain hose and the way it was routed, because a hose that cannot rise cannot drain and a hose that is crushed cannot flow. Every model number in the WDF family is the same platform at a different point in its production run, so read your full model number before ordering anything.
What an owner actually sees
- Complete silence at the drain step — Nothing is being asked, which points at the pump circuit or the control.
- Water appearing in the tub hours after the cycle finished — Water returning rather than never leaving, which is a valve or a routing fault.
- Dirty water on the worktop beside the tap — A blocked air gap, which is unmistakable once it is described.
- The machine has never drained since it was installed — A knockout plug still in place, not an appliance fault.
- NEAR MISS — the tub drains but the dishes come out dirty — Clean drainage with poor washing is a different fault and belongs on the cleaning-performance page.
Causes, most likely first on the WDF family
- Drain hose kinked, crushed or without a high loop — Top of the list here. Cabinet installations leave the hose pressed against the back of a unit or looped on the floor, and either arrangement traps water in the tub.
- Drain pump failed, jammed or obstructed — Second here. A pump that has failed electrically is silent instead, and the difference between those two sounds is most of the diagnosis.
- Check valve stuck, letting water return to the tub — Third on this platform. A valve held open by debris lets the drained water come straight back, so the tub is empty during the cycle and full afterwards.
- Air gap on the worktop blocked — Fourth: possible, but not where to start. Not every installation has one, so this is only on the list where a fitting is present beside the tap.
- Body: A brand-generic article on this symptom starts with the filter and food trap. Here the drain hose moves ahead of it, because the models in the table share the same construction, so what is true of one is true across the family.
The order to work in
- Open the cabinet beside the machine and follow the hose to the sink connection — A crushed section, a sharp kink or a hose that never rises above the tub is visible without tools.
- Listen at the end of the cycle for the drain pump running — A hum with no water movement is a jam; complete silence points at the pump circuit or the control.
- Note whether the tub is empty at the end of the cycle and full an hour later — Water returning after the cycle is a valve or a routing problem, never a pump problem.
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel or reaching into the sump — a capacitor can hold a charge after the power is off. Assume there is broken glass in the sump of any machine with a drainage fault and use a cloth rather than bare fingers. Bail standing water out before tilting or moving the machine, and remember the water left in a dishwasher is not clean.
Models in the WDF family
Reference| Model number | Family key |
|---|---|
| WDF332PAM**-01 | amana:dishwasher:wdf |
| WDF332PAM**-02 | amana:dishwasher:wdf |
| WDF332PAM**-03 | amana:dishwasher:wdf |
| WDF332PAM**-04 | amana:dishwasher:wdf |
| WDF332PAM**-05 | amana:dishwasher:wdf |
| WDF332PAM**-06 | amana:dishwasher:wdf |
Where the owner fix stops
Call rather than dismantle if the pump hums and will not clear, because the impeller is easy to damage from the wrong side. Call the plumber rather than the appliance repairer when the sink itself also drains slowly.
Other faults covered for the WDF family
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
