The short answer
On a BLACK+DECKER dishwasher, not heating or not drying most often comes down to plastics rather than a fault. Plastics lead on a compact machine, where the load is proportionally more plastic and the residual heat in a small tub is lower to begin with. Most of what follows is an owner check; it becomes a service call when the tub is cold at the end of a full hot programme.
What you are actually seeing
- The entries at the end belong to a different fault and send you elsewhere.
- Dishes come out clean but soaking wet.
- Plastic items are wet while china is nearly dry, which is normal rather than a fault.
- The tub is cold to the touch at the end of a cycle.
- If instead you see this: Dishes wet only on upturned bases and cup rims — that is water pooling in the load, not a heating fault.
Ranked causes on a BLACK+DECKER dishwasher
- Plastics lead on a compact machine, where the load is proportionally more plastic and the residual heat in a small tub is lower to begin with. Settle one observable question before you use this ranking — countertop or portable versus built-in: a faucet quick-connect or an internal reservoir, draining into the sink or an on-board tank, means countertop or portable, while a plumbed and hard-wired unit is built-in. Look at where the water and the exhaust go. A countertop or portable unit connects to a faucet with a quick-connect adapter or fills from an internal reservoir, and it drains into the sink or into an on-board tank. A built-in unit is plumbed and hard-wired in place. On countertop or portable units, the hookup is made and broken every use, so hookup faults dominate and cost nothing to fix; on built-in units, the hookup is fixed, so a fault that appears after months of good service is far more likely to be inside the machine.
- Plastics rather than a fault — Why: Plastic holds almost no heat, so it cannot evaporate the water sitting on it the way china and glass do.
- Rinse aid is empty — Why: Drying depends on water sheeting off rather than beading.
- Overloading and nesting — Why: Items pressed together hold a water film between them no matter how good the dry cycle is.
- The heated-dry or extra-dry option is off — Why: Eco and quick programmes deliberately skip or shorten the heated dry, and a machine that recently had its default programme changed will behave exactly like a failed heater.
What to check, and why in this order
- Free checks first, then the ones that need the machine opened.
- Fill the rinse aid and run one normal cycle before judging anything else. It is free and it is the answer often enough to end the diagnosis here.
- Then check the programme: a quick or eco cycle deliberately skips heat, and that is a setting rather than a fault.
- Then separate plastics from china in your judgement, because wet plastic alone is not a fault.
Checks you can safely do yourself
- Stop at the first step that would need a meter on live terminals.
- Fill the rinse-aid reservoir to its mark and set the dispenser to a middle setting. — Number: 1 — Tools: rinse aid — Time: a few minutes
- Select the standard or normal programme with any heated-dry or extra-dry option switched on, and run a full cycle. — Number: 2 — Tools: none — Time: under two hours
- Open the door at the end of the cycle and put your hand on the inside of the tub wall. A warm tub means heat happened; a cold tub means it did not. — Number: 3 — Tools: none — Time: a few minutes
Before you start
Safety
Unplug the appliance or switch off its breaker before removing any panel. A capacitor can hold a charge after the power is off. Nothing below asks you to put a meter on live terminals, and nothing below asks you to defeat a door switch or an interlock — those exist to cut power to something that would otherwise hurt you. If the plug, the cord or the outlet is warm, discoloured or smells hot, stop there and have the circuit looked at before you use the dishwasher again.
When to stop and call a technician
The line is whether the next step needs live testing, sealed-system access or a part you cannot verify. Call for anything behind the cabinet skin, and any repair whose part cost approaches what the appliance is worth, or when:
the tub is cold at the end of a full hot programme detergent is left undissolved in the dispenser every cycle the cycle time has stretched noticeably with no change of programme
What this page does not cover
Common BLACK+DECKER Dishwasher Problems (black-decker-dishwasher-problems)
This page is generalized across the BLACK+DECKER dishwasher range: it is written for the brand and the fault, not for one family or one model number. It carries no model-specific code table, wiring detail or part number, and no measured failure rate, because no measured snapshot was available here. Where a family- or model-specific page exists beneath this one, the links below go down to it.
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
