- Model Number
- MDB4949SKZ
- Brand
- Maytag
- Age
- 1-5 years
About three weeks ago, my 1.5-year-old dishwasher started occasionally not finishing wash cycles (normal wash with heated dry). It would get most of the way through and then start singing and flashing E9 F1. If I started it again, it would usually go all the way through. The instances of finishing the whole cycle diminished steadily until it no longer would go through a whole cycle at all. It would get through what I think is the pre-wash step and then throw the error instead of draining (the main detergent compartment is still closed at this point). If I hit the cancel button to drain it, it would empty, but slowly--sometimes I'd have to press the drain button several times to empty it completely. I did the following:
1. Unplugged it and plugged it back in
2. Checked the drain hose for blockages (it was clear)
3. Cleaned all the filters I could from inside the dishwasher, including those I had to unscrew to remove--also checked the drainage hole at the bottom of the inside of the dishwasher, which was not blocked. The filters had some gunk in them but definitely not enough to stop it from draining.
4. Removed, disassembled, and cleaned out the pump. There was more stuff stuck inside the pump than I expected, but again, did not seem like enough to keep it from draining.
After reinstalling the cleaned pump, the dishwasher went through a quick wash with no issues. When I tried a normal wash next, it went through both washing stages but threw the error at the end and did not dry. When I hit the drain button, it drained with no problem. I ran it again today on a normal cycle and it only got to the end of the prewash step. Again, drained just fine when I hit the button.
At this point I'm not sure what else to try. I'm confident I can replace the control board if necessary, but given the cost, I'd rather not do that without knowing if it's actually the problem. Any advice would be appreciated.
1. Unplugged it and plugged it back in
2. Checked the drain hose for blockages (it was clear)
3. Cleaned all the filters I could from inside the dishwasher, including those I had to unscrew to remove--also checked the drainage hole at the bottom of the inside of the dishwasher, which was not blocked. The filters had some gunk in them but definitely not enough to stop it from draining.
4. Removed, disassembled, and cleaned out the pump. There was more stuff stuck inside the pump than I expected, but again, did not seem like enough to keep it from draining.
After reinstalling the cleaned pump, the dishwasher went through a quick wash with no issues. When I tried a normal wash next, it went through both washing stages but threw the error at the end and did not dry. When I hit the drain button, it drained with no problem. I ran it again today on a normal cycle and it only got to the end of the prewash step. Again, drained just fine when I hit the button.
At this point I'm not sure what else to try. I'm confident I can replace the control board if necessary, but given the cost, I'd rather not do that without knowing if it's actually the problem. Any advice would be appreciated.