Bosch Dishwasher E24, now stops after 3 minutes

Dishwasher Repair
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1

Brand: Bosch
Model Number: SHEM63W55N/11
Main Symptom: Cycle Stops
What happens & when: Cycle starts at 2:30, stalls at 2:27

Error Code (if any): E24 initially, none now
Parts or tests already tried: Cleaned filter, checked for debris in bottom
Photos / video link: None

My Bosch dishwasher stopped mid cycle with an E24 error one day. This is supposedly a blockage in the drain. I cleaned the filter, checked the basin for debris and cleaned the impeller. I did find a piece of plastic packaging in the basin.

So, after reassembly, I tried a test cycle. The “Normal” cycle starts at 2:30 and it would run until 2:27 and then no longer advance. I cycled the circuit breaker to reset it and tried again with the same results. The interior was pretty much dry each time, maybe a little water around the bottom.

I then tried a rinse cycle. It started at 9 minutes and froze at 6 minutes. Also pretty much dry inside.

I didn’t try other cycles, but it seems like it’s freezing after 3 minutes. Other threads indicate a Control Module replacement solved similar issues. Is that likely the culprit here?

2

So this error code does indicate a drainage issue. Check to make sure that there is 120 vac getting to the drain pump. If there is 120 vac to the drain pump then this will be a drain pump issue and if there is not 120 vac then this will be a faulty control board.

https://www.appliancepartspros.com/bosch-power-module-not-12026962-ap6894044.html

https://www.appliancepartspros.com/bosch-pump-drain-00631200-ap5972147.html

3

Thanks. I noticed in the drain pump video that there are 3 wires going to the pump. Which should have 120v AC?

Also, the control model you linked shows no longer available? Is there a replacement?

4

It is a BLDC (Brushless DC) 9-vane drain pump!

Bosch SHEM63W55N.pdf (101.9 KB)

SHEM63W55N Bosch Dishwasher Schematic 58300000190153.pdf (341.2 KB)

5

I’m recovering from the flu and haven’t been able to look at this yet, but if it’s a DC pump, shouldn’t I be looking for DC voltage at the connector, not AC? And, I’m sorry, which of the 3 pins should I check?

6

So, I couldn’t easily check the voltage at the pump connector without pulling the DW, so I decided to try to run a drain cycle to see if the pump worked. I poured some water in the bottom, powered it on, started a cycle then stopped it and held the start button to make it drain. The pump ran and emptied the DW, so the pump is fine.

On a whim, I decided to try the Speed60 cycle I hadn’t tried, to see if it behaved the same. It ran without a problem.

So, we filled it up as normal and ran the cycle we normally run and it was completely fine. So, I guess it’s fixed? No, of course I know better, the problem is going to come back at some point. But for now it’s fine. When it does fail again, I’ll know it’s the power module.