E:24 No drain flow possible
Drain pump is running but unable to remove the water, drain system blockage.
Check for blockage of drain hose, pump, backflow valve
Heat pump unable to circulate and clear blockage.
Replace heat pump
OK, so based on the information you guys gave me I took the system apart and examined all hoses. They were all clear. I took off the drainage pump and that was clear. I took off and took apart the circulation pump as much as possible and found a thin piece of plastic wedged in there. Boom. Put everything back together, but still got the same errors.
Drain Pump 90 Ω between each of the (3) Windings
Heat Pump 13 Ω between each of the (2) Wires
Cecked all the resistances and the pumps seem good.
Clearing error codes
To clear error codes, run the customer service test program.
Error code E:24 for drain obstructions
If a dishwasher doesn’t drain properly and / or shows an E:24 error code ( ), the problem usually is not with the control
or drain pump. To solve the issue, (1) the control must be reset and (2) the obstructions generating the error code must be cleaned out.
To reset the control
1. With the door closed and the dishwasher turned on, press and hold the Start button for ~ five (5) seconds -- the display should show "01" or "00". Press the On/off button (turning the dishwasher off) and the control should be
2. If step one (above) didn’t work, remove the toe kick and disconnect the drain pump harness from the drain pump.
Make sure the connector isn’t touching anything – tape the connector if necessary. With the door closed, press the
On/off button to turn the dishwasher on. You should hear the control turn on and control relays click on and off. Wait
about 30 seconds with the power on, then press the On/off button to turn the dishwasher off. With the power off,
reconnect the drain pump harness and reinstall the toe kick. With the door closed, press the On/off button to turn
the dishwasher on. The control should be reset.
With the dishwasher installed and drain hose connected, open the door to the dishwasher and remove the sump filter. Add water to the sump until it is filled. Then gently lift up on the safety float until the float switch closes (~ 1⁄4”). The drain pump should turn on and drain the water out.
1. If the drain pump turns on, but does not drain, check the internal and external drain hoses for kinks or obstructions. Make sure the drain pump cover is properly snapped in place. If the drain hose is attached to a garbage disposal, make sure the disposal plug is removed and the disposal doesn’t have any obstructions.
2. If the water drains out completely, release the safety float If water flows back into the sump, the backflow
(check) valve may be stuck open. Clean out the backflow valve and sump. If necessary, replace the backflow valve.
3. If the drain pump doesn’t turn on, remove the drain pump cover, check for obstructions and make sure the pump Impeller turns freely.
4. Carefully remove the suction cap from the sump and make sure the heat pump impeller turns freely (using a 5 mm nut driver).
TIP: Opening and closing the door bypasses the E:24 error code, allowing the dishwasher to continue in the wash cycle (unless it is reset).
The heater, temperature sensor and othe components are part of the recirculating motor assembly.
So I did the reset and am no longer getting the E21. I have continued to monitor the dishwasher and it has not come back. I still continue to get E24 though. I tried your process for clearing obstructions and the system drained well with no backflow. No idea why E24 still comes up as the performance of the dishwasher does not seem in any way impaired. The tip you provide is exactly what I discovered by accident, though I did it by turning the machine off and on again just before the code would have come on.
So, thanks to your help the dishwasher is working, but it still is giving me an error message I see no reason for. This is something I could live with if I cannot find a way to take care of it, but it is bothersome.