Make it Start with a Door Change Dishwashing Machine Repair
Make it Start with a Door Switch Dishwasher Repair
You wouldn't even understand your dishwasher had one till it isn't working. These little switches are tucked inside the control panel of your dishwasher and most times belong reliable Fix-It Right Plumbers of the door latch. The door latch pulls the door firmly to the main body of your dishwashing machine and prevents water from dripping during a cycle. If your dishwashing machine does not start, it might be due to a malfunctioning door switch.
How the door switch works
When the dishwashing machine door is open, the switch is off. Inside your dishwashing machine tub will be a metal or plastic prong. Close and latch the door. The prong will depress the door switch totally and the circuit will close enabling the dishwashing machine to start. Examine the prong to make sure it's not loose or bent and it's appropriately activating the door switch.
What a door switch appears like and where it's located
Typically a dishwashing machine door switch is an inch long. It can be black or red and has metal prongs called terminals protruding from the body. Some door switches have two terminals and some have three.
The terminals can be a typical terminal (COM), normally closed terminal (NC) or a generally open terminal (NO). Switches with just two terminals will either have a COM and a NO, or a COM and an NC. Door changes with three terminals have COM, NC, and a NO.
Your dishwashing machine's door switch will be behind the control panel on the front of the system. It may be needed to remove the inner panel of the door initially. You can do this by getting rid of a couple of screws. The screws at the bottom of the door are for the hinges. You do not require to eliminate the entire door for this repair.
Once the inner panel is eliminated you may find another smaller panel covering the back of the control board held in place with screws or clips. By eliminating this panel you will gain access to the latch assembly housing the door switch.
How to eliminate the switch
Carefully usage needle nose pliers to pull the wires leading from the harness off the terminals. For door changes that have a locking clip, depress the lever as you carefully pull the harness far from the terminal.
Take your time while removing switches that belong of the latch assembly or that have a bracket. If you hurry and break the switch's real estate you will end up needing to change more parts.
How to evaluate your door switch
Use an ohmmeter to test the switch for connection. This test is for door changes with 3 terminals.
1. Set your ohmmeter to determine resistance at a scale of Rx1.
2. Touch the metal suggestions of the test leads together and zero your ohmmeter by Fix-It Right Plumbing adjusting the thumbwheel in the front of the meter up until the needles reads "0" on the scale.
3. Touch one meter cause the COM terminal and the other lead to the NO terminal. Do not press in on the actuator.
4. Your meter needs to provide a reading of infinity, meaning the circuit is open, and there is no continuity.
5. Without moving the meter's leads, press down on the actuator up until you hear a 'click'.
6. With the 'click' of the actuator, the meter must produce a resistance reading of absolutely no ohms. This suggests the circuit is closed and connection exists. (You will just hear this click with a door switch with 3 terminals.)
7. Keep the meter lead that is touching the COM terminal in place, but move the other meter lead from the NO terminal to the NC terminal.
8. When the actuator is released, you need to get a resistance reading of zero ohms.
9. Now set your ohmmeter to its greatest resistance scale and touch one meter cause the NO terminal and the other meter cause the NC terminal.
10. The resistance reading in between these 2 leads ought to be infinite.
11. Finally take a resistance reading from both the NC terminal and the NO terminal to any metal mounting hardware that is a part of the switch assembly. You must get a regular reading of infinity.
Any readings that differ from the tests above are signs of a faulty door switch that will require to be replaced.
Replace the old switch with a new one, using the very same procedure as described above. Reassemble the inner door panel and reconnect your dishwashing machine to its power supply. Do not forget to change your fuse or turn the breaker switch back on. Run your dishwashing machine through a cycle to make sure it's working effectively.