Jay for Model Number SHEM78W55N/01 I have 2 issues with my dishwasher I often get error code E24 and also the program times don't run as scheduled. I have checked that the pump runs and the drain is not clogged, used the reset function and haven even cleaned the line with air pressure but still hit or miss as to complete draining or not. The programs have also been erratic, as the timer counts down, it will usually jump back up; going from say 16 minutes or so remaining back up to 45 for example. When this happens it is also hit or miss as to whether or not the cycle will finish or have the E24 code. The drainage pump does run and someone suggested it's probably a computer problem but if so is it the power module or operating module or something else. Thanks Jay for Model Number SHEM78W55N/01 ANSWER Jay, as there are no obstructions, the drain pump 00631200 will need to be tested for resistance. From terminal 1 to 2, 1 to 3, and 2 to 3 there should be a resistance reading of 130 Ohms. If the resistance is good, the most likely cause of failure would be the power module 12016881. My follow up Question is: could either the low resistance alone or the power module alone account for both the intermittent drainage problem as well as the cycle time jumping (does drainage affect timing cycle) and if so which component would be more likely to be the source of both problems.
Answer Jay, either one could cause the failure. If the drain pump has a resistance out of tolerance, it can cause more current to be drawn through the power module and cause an improper drain. If the water is not properly drained, the turbidity sensor will be exposed to the dirty water from before the drain, causing more time to occur during a cycle. However, if the resistance is in tolerance, the power control sending improper voltage could cause the same failure. Read More... Answered by AppliancePartsPros.com | Monday, January 16, 2023