Before you spend $151.50 on a Whirlpool control board (W10804115, confirmed for WDF520PADB0/B2/B3, PADM0/M2/M3 and PADW0/W2/W3), rule out the thermal fuse and the door latch, and run a free hair-dryer test on the keypad. Two of those three cost nothing.

A buyer in Kansas City ran into this in November 2017. The dishwasher drained poorly and kept cycling out mid-operation. A technician recommended the circuit board. Somewhere in the process the customer cleaned the drain hose, the research doesn’t say on whose advice, then replaced the board. The problem persisted. A thermal fuse, not the board, fixed it. A professional pointed at the $151 part, and the part that solved it cost about $33.

Start with the hair-dryer keypad test

If the buttons on your control panel are unresponsive, slow, or only a couple of them still work (Cancel and Drain are common survivors), a forum thread describes heating the keypad with a hair dryer and pressing the buttons firmly. This is advice from a forum thread on AppliancePartsPros, not a manufacturer-sanctioned step, and it should be read that way: one documented case, not a verified fix rate. In that thread, the warming test restored button function, which pointed to the control panel and keypad, not the circuit board. The fix in that case turned out to be a console assembly.

A negative result here doesn’t convict the board, either. The research also names a wax motor (its exact job isn’t described in what I read, so I won’t guess beyond naming it), corroded spade connectors, the metal tabs that join a wire to a switch or sensor, and a failing water-level switch as causes that have nothing to do with the board. The keypad test narrows things down. It doesn’t hand you a diagnosis on its own.

Test the thermal fuse for continuity

The thermal fuse is a one-time safety cutout that blows and cuts power when something runs hotter than it should. A blown fuse can produce symptoms that look electrical and expensive: poor drainage and the machine cycling out mid-operation, the same symptoms documented in the Kansas City case.

Before you take anything apart, switch off the dishwasher’s breaker and shut off its water supply. Testing the fuse for continuity, whether electricity can still pass through it, is a job for a multimeter set to the continuity or resistance setting, done with the breaker off. If the fuse reads open, no continuity, it has failed and needs replacing. If it reads continuity, it’s fine and the fault is elsewhere.

One buyer in Vernon, Connecticut suspected three different components, ordered all three, tested the thermal fuse first, found it open, fixed the problem with the fuse alone, and returned the other two parts unused. Another confirmed an open fuse with a volt-ohm meter before buying a replacement. A third had assumed a 15-year-old machine was simply worn out and was pricing a new dishwasher when the fuse turned out to be the entire problem. A reviewer on Home Depot’s site put it plainly: the inexpensive part was used to fix a $700 dishwasher.

If, and only if, the fuse tests open, the replacement part is the Whirlpool thermal fuse W10258275, which fits Whirlpool dishwashers and replaces four older part numbers. It carries 236 reviews averaging 4.9 stars, with zero one-star and zero two-star reviews in that count. That’s worth reading carefully rather than at face value: AppliancePartsPros collects reviews from people who completed a repair, so anyone who bought the part, had it fail to fix the problem, and gave up doesn’t show up in that count. The absence of low ratings says something about who leaves a review, not about how often the part actually fails.

The fuse isn’t always the answer, either. A separate thread describes a thermal fuse replaced several times over nine years on one machine. The real cause turned out to be oxidized, loose spade connections generating heat, with one buyer describing “slightly burnt looking soot on the spade connector,” and a failing water-level switch contributing to the same heat buildup. The control board was explicitly ruled out in that case. If a fuse keeps failing on the same machine, the fuse itself probably isn’t the problem: something feeding it heat or a bad connection is.

Check the door latch only if the symptom fits

If your dishwasher won’t start at all, or stops partway through a cycle in a way that suggests the door isn’t registering as closed, the door latch is worth a look. The Whirlpool door handle and latch assembly, WPW10130695, is listed at $44.23 with 738 reviews averaging 4.8 stars. It’s worth knowing exactly what you’re buying: this is a complete handle-and-latch assembly with two switches built in, not a single $15 switch, and the two switches aren’t sold or replaced separately within this part. The research doesn’t attach specific symptoms to this part, so there’s no documented case to point to here, just the price correction and what the part actually is.

If the board is still the answer

After the keypad test, the fuse test, and a look at the latch if the symptom fits, the control board itself has remarkably little evidence behind it. The Whirlpool board, W10804115, was listed at $151.50 to $151.51 when I checked, confirmed for the nine WDF520 model variants above, with four confirmed superseded part numbers if you’re matching an old part pulled off the machine. But it has only two reviews on PartSelect, both generic, and zero repair stories on AppliancePartsPros. Set that against 236 reviews on the fuse and 738 on the latch: people are overwhelmingly not buying this board. That doesn’t by itself prove it’s rarely the fix, but it does mean there’s almost no owner evidence to back up a board recommendation the way there is for the fuse.

If you’ve replaced a control board before and it failed again quickly, that isn’t evidence you need another board. It’s evidence something upstream is damaging it. One forum thread, titled about a dishwasher that “eats its control boards,” describes a replacement board dying within one or two cycles, with the same resistors burned on both the old and new board. The cause traced to a failing wax motor drawing too much current. The rule that comes out of that: a board that fails twice isn’t a board problem. Something feeding it power or heat is the actual fault, and replacing the board again just repeats the failure.

For GE and Samsung dishwashers, I can’t give you the same path. GE lists control boards WD21X32165, WD21X24901, WD21X31902C, and WD21X24900 as live products at PartSelect and GE’s own parts store, but which GE models take which board wasn’t something the research covered, so I can’t point you to the right one. Samsung lists boards under both the DD92- prefix (DD92-00033C and DD92-00059G, confirmed live listings) and a separate DE92- prefix. Both exist. Which one your specific Samsung model takes wasn’t researched either. Labor costs, for any brand, weren’t part of this research, so I can’t give you an installed price either.

FAQ

How much does it cost to replace a dishwasher control board?

For the Whirlpool W10804115, the part alone was listed at $151.50 to $151.51 when I checked. GE and Samsung board prices, and labor costs for any brand, weren’t part of this research.

How can I tell if my dishwasher control board is bad?

No symptom in the research points specifically to the board.

My dishwasher won’t start. Is it the control board?

No single part is tied to that symptom in the research.

Can I trust the 4.9-star rating on the thermal fuse?

Treat it as reassuring but incomplete: the platform mostly counts completed repairs.

Do Samsung dishwashers use DD92 or DE92 control boards?

Both exist; which one your model takes wasn’t researched.

Sources and Citations

Research checked 31 August 2026.