Replace the Float Switch on Malfunctioning Bosch Dishwashers 00165256 

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Jerry's Appliance
March 14, 2018
Dishwasher Repair

The float switch is a small part that monitors how much water goes into the dishwasher each cycle. If the machine isn’t getting water at all, or the machine is receiving too much water and is flooding the kitchen, then the float switch may be malfunctioning.  Order replacement part #00165256 for Bosch dishwashers and follow these steps:

1. Unplug the appliance and turn off the water supply.

This repair involves removing and replacing electrical components, so the machine certainly shouldn’t stay connected even if it’s powered off. You will also need to pull the machine out from under the counter, so shut off the water before you disconnect the water and drain lines.

2. Disconnect the water lines under the sink.

Remove the drain line. Start by loosening the clamp. Then disconnect the two hoses. Disconnect the water line from the local water shut-off switch.

3. Pull the machine out.

Open the door. Remove the screws that fasten the dishwasher to the underside of the counter. Close the door until it’s mostly ajar. Carefully wiggle the machine slightly away from the counter using the door. As soon as you can get a grip on the sides of the machine frame themselves, close the door and grab the machine sides to pull it fully out.

4. Remove the float switch.

On the left side of the machine, the float switch will be near the bottom of the machine near associated wiring. Take a picture of the wiring for later reassembly and then unplug the wire harness connected to the float switch. You can use a flathead screwdriver to carefully pry it away. Then use smaller screwdrivers to pry the float switch itself free of the small tabs holding it in place. Remove the float switch and set it aside.

5. Install the replacement part.

Push the new switch into position. Listen for the clicks of the locking tabs to ensure the switch is fully in position. Then plug in the wire harness. Make sure the wires are oriented correctly based on the picture you took earlier; the same color wire should be on top.

6. Reinstall the dishwasher.

Put the water lines back through the holes from the dishwasher’s compartment to under the sink. Then carefully push the dishwasher back into position under the counter, stopping halfway to make sure the hoses are still in position under the sink and aren’t stuck under the machine. Reconnect the water lines: starting with the water line and then tightening the drain line clamp back into position. Lastly, resecure the top of the dishwasher to the underside of the countertop.

For more dishwasher and major appliance repair guides, go to Jerry’s Appliance Repair.

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