The valves are simple to check. Remove the valve then hookup the water to the usual connector. Then hook 120 volts via an extra power cord to the valve. I recommend you crimp the proper connector to the end of the cord and plug that onto the valve. You can also use Alligator leads, but this comes at the risk of then coming off and shorting out. Whenever doing anything like this always cover the exposed ends with electrical tape. Then plug in the power cord. If the valve is working it should allow water to pass freely through the valve. The German washers also typically use an "air column" to shut the water off via a pressure switch. Check this pressure switch by hooking up a hose or just unhooking the one on it and measure the contact with an ohm meter. The contact should switch when you blow onto the tube simulating the water rising in the air column.
Parts can be found online or via your area dealer.
It is possible that the machine does not start off the cycle because there are errors due to feedback from the inputs. For the program to start up the main program controller must initiate the INLET/MOTOR/DRAIN pump/ valve to open up and allow each function to be driven starting from the flow of water into the drum as also the drain valve to open to exit the water at the point of the program cycle. If this does not happen then the voltage at the valve/motor/pump must be checked or the fault relates to no voltage from the controller. This means the controller is a suspect.
If this is a timer controller type then the contacts or the function to move on is faulty and needs a replacement. The inlet valve works to allow water and then the motor is struck on and not moving to the next cycle. Test the controller to confirm, check with a similar type before you order for one.
It is possible that the machine does not start off the cycle because there are errors or back feedback from the inputs. For the program to start up the main program controller must initiate the INLET valve to open up and allow water to flow into. If this does not happen then the voltage at the inlet valve must be checked or the fault relates to no voltage from the controller. This means the controller is a suspect.
If the water flows then the flow should be good, if not the inlet valve is bad or there is dirt in the filter. Also check the flow at the inlet of the water line. Once the water comes into the system the WATER LEVEL SENSOR - normally a pressure switch- must activate at the preset/chosen level to give the signal to the program controller to switch on the motor. What is most important for the motor to start functioning is that the door switch must be ON when the door is shut or this will be an error for starting the motor for rinse and wash.
Finally after the wash the drain valve will be activated, the water is allowed to come in to rinse and then finally the dry spin with the drain valve/pump activated so as to drain off all the water from the clothes during the spin.
Make sure that a fault in any of the cycle will relate to the specified action, so check the command from the program module and then the executing device be it the valve or motor or pump.
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