johnkruz
Premium Member
- Model Number
- SHX5AV55UC/01
- Brand
- Bosch
- Age
- 6-10 years
I had a Bosch Dishwasher SHX5AV55UC/01 that threw an intermittent E24 error code at the start of the cycle that gradually got more frequent over time. Finally, the E24 error code came up every single time I started the dishwasher. This “failure to drain” code could have been a lot of different things based on my extensive internet searches. There a many threads out there that claim to have “fixed” similar problems, but really went nowhere to a 100% solution in my circumstance.
My indications were that my dishwasher drained perfectly every time. Fast drain, water poured out when the drain pump ran and the sump was emptied out within about 10-15 seconds after starting.
I checked:
Screen filters were clean, drain hoses / water matrix were clean, nothing was plugging up or wrapped up around the drain pump impeller, turned off power overnight to “reset” the control board, float was fine -- would drain fast when held in the up position w/ the door open, vinegar cleaned it, small white pump cover was snapped in place (will not drain without it!).
I replaced:
The drain pump, small white pump cover, lower right side control board.
After all that, E24 code continued at the start of the cycle, not progressing to wash.
Further investigation revealed the following error sequence:
However, if you want your dishwasher to work perfectly again 100% like new, you will need to replace the main wash-motor/heat-pump. In my case it was a brand new wash-motor/heat-pump assembly and a pretty straightforward install. I didn’t buy used off of eBay because I was afraid of getting another defective pump. See explanation below for the non-intuitive reason for the “false indication” of a failure to drain the sump:
The dishwasher does a couple of stage checks to see if water exists by running both wash pump and then the drain pump to measure the current draw. If the current draw is high, it thinks there is excess water resisting the wash pump, and so tries to drain, and the wash pump again. If the current draw is still high it stops the wash cycle and throws the E24 error code. You can bypass this check if you open and close the door at the start of stage 3 – 40 seconds into the wash cycle.
From another website:
Bosch Dishwasher E24 Error – Draining Fault
Description:
Bosch dishwasher E24 error indicates that there is a problem with draining water from the dishwasher. This is a generic error that indicates that the dishwasher still has water in the sump. Sometimes this can be a tricky error to rectify, but follow the steps below and you should have the Bosch dishwasher E24 error solved fast and accurate.
Actions To Take:
If the dishwasher is full of water when the fault appears:
If dishwasher sump is empty and the error code is displayed:
If Bosch dishwasher E24 error appears at the beginning of the cycle indicates that the heat pump impeller has become stiff and is giving a false reading that the dishwasher is filled with water. Most Bosch dishwashers detect presence of water in the tub by running the wash-motor/heat-pump and checks for resistance created by the water on the impeller. If the bearings in the wash pump start to seize up, this will give a false drain fault error and the Bosch dishwasher E24 error will constantly show up even if the water is draining well and no water in the dishwasher is present.
It seems like this E24 error while the water is draining fine is a common complaint w/ a lot of different Bosch dishwasher models. If you don’t mind the hassle of opening and closing the door at the 40 second point, it looks like you can get away w/ this for years. If you want a true fix replace the main wash-motor/heat-pump! Hope this helps you!
My indications were that my dishwasher drained perfectly every time. Fast drain, water poured out when the drain pump ran and the sump was emptied out within about 10-15 seconds after starting.
I checked:
Screen filters were clean, drain hoses / water matrix were clean, nothing was plugging up or wrapped up around the drain pump impeller, turned off power overnight to “reset” the control board, float was fine -- would drain fast when held in the up position w/ the door open, vinegar cleaned it, small white pump cover was snapped in place (will not drain without it!).
I replaced:
The drain pump, small white pump cover, lower right side control board.
After all that, E24 code continued at the start of the cycle, not progressing to wash.
Further investigation revealed the following error sequence:
- Press cycle start close the door
- Drain pump runs to empty whatever little water remains out of the sump
- Main pump runs briefly
- Drain pump runs again, with nothing coming out because the sump is already dry
- Main pump runs briefly
- E24 error code is displayed
However, if you want your dishwasher to work perfectly again 100% like new, you will need to replace the main wash-motor/heat-pump. In my case it was a brand new wash-motor/heat-pump assembly and a pretty straightforward install. I didn’t buy used off of eBay because I was afraid of getting another defective pump. See explanation below for the non-intuitive reason for the “false indication” of a failure to drain the sump:
The dishwasher does a couple of stage checks to see if water exists by running both wash pump and then the drain pump to measure the current draw. If the current draw is high, it thinks there is excess water resisting the wash pump, and so tries to drain, and the wash pump again. If the current draw is still high it stops the wash cycle and throws the E24 error code. You can bypass this check if you open and close the door at the start of stage 3 – 40 seconds into the wash cycle.
From another website:
Bosch Dishwasher E24 Error – Draining Fault
Description:
Bosch dishwasher E24 error indicates that there is a problem with draining water from the dishwasher. This is a generic error that indicates that the dishwasher still has water in the sump. Sometimes this can be a tricky error to rectify, but follow the steps below and you should have the Bosch dishwasher E24 error solved fast and accurate.
Actions To Take:
If the dishwasher is full of water when the fault appears:
- Clean filters and check drain pump for foreign objects.
- Make sure the drain pump cover is installed properly.
- Check drain hose and drain pipe under the sink for blockages.
If dishwasher sump is empty and the error code is displayed:
If Bosch dishwasher E24 error appears at the beginning of the cycle indicates that the heat pump impeller has become stiff and is giving a false reading that the dishwasher is filled with water. Most Bosch dishwashers detect presence of water in the tub by running the wash-motor/heat-pump and checks for resistance created by the water on the impeller. If the bearings in the wash pump start to seize up, this will give a false drain fault error and the Bosch dishwasher E24 error will constantly show up even if the water is draining well and no water in the dishwasher is present.
It seems like this E24 error while the water is draining fine is a common complaint w/ a lot of different Bosch dishwasher models. If you don’t mind the hassle of opening and closing the door at the 40 second point, it looks like you can get away w/ this for years. If you want a true fix replace the main wash-motor/heat-pump! Hope this helps you!
