Chosen Solution
Hi ….I’m new to this site but would welcome any suggestions as to what’s wrong with our dishwasher. Originally noticed that the contents weren’t being washed and the dishwasher tablet had ejected but had just run down the door. I’m reluctant to throw this in to land fill but I’m struggling to understand what is wrong with it. I’ve taken the covers off and watched what’s going on when I switch it on. Looking at the pressure chamber?…. The clear plastic tubes where the inlet and outlet pipes are connected. The machine starts to fill and I can see the water filling the chamber. This goes on for about 2 minutes and then the drain pump kicks in for a few seconds and then stops. The inlet valve opens again and starts filling for a few seconds and the the drain pump comes on again for a few seconds. This seems to carry on until the program finishes. If I open the door, the water has filled the bottom of the chamber but at no point does the circulation pump start. I puta DVM across the motor terminals but I never get 240v across them. I’m guessing the control panel should trigger the circulation pump but I don’t know what it is that would trigger the pump to come on. initially I thought the pump must be defective (which it may be) but the pump never seems to get 240v applied to it. Just for fun, I thought I would check the continuity of the motor windings. Having disconnected the terminals, I can’t get any reading across the windings. The terminals are labelled 1, 4, 2, 3. The windings are across terminals 1 and 3 and appear to be open circuit. There’s about 60 ohms between 1 and 4. I took the motor out and applied 240v to the windings and the start capacitor. The motor didn’t start but it did make a humming noise suggesting that the windings are connected but just not able to start the motor. now I’m confused. 1….Having no continuity between the windings I would assume it was dead but then why does it hum when I apply 240v to it. 2….why does 240v never get applied to the circulation pump when the appliance is turned on? has anyone else experienced this? I would appreciate any help as what else I could check? The dishwasher model is a Siemens SE64M359GB.
Hi @harry_boy , Just wondering if there is a problem with the flowmeter This detects the water flowing into the dishwasher. It has a reed switch the sends pulses to the control board and as it ages either the switch fails or it sends incorrect signals. I had this with my Bosch dishwasher and the machine kept filling and draining without starting to wash. I assume that there is a safety switch that prevents the water from overflowing by turning off the inlet valve and then perhaps it is drained as well. I don’t know. All I do know is that replacing the flowmeter fixed it. If you place a meter across the switch leads you should see pulses as the water is filling. I don’t know where it is located in your model as I couldn’t find a parts diagram for the machine but in mine it was on the left side. I could remove the left side outside cover to get to it. Worth a look maybe.
