DescriptionThis video provides step-by-step instructions for replacing the float (or pressure chamber) on Bosch dishwashers. The most common reason for replacing the float is if the dishwasher won’t fill and other parts are not at fault.
All of the information in this float replacement video is applicable to the following brands: Bosch, Gaggenau, Thermador, Kenmore
Step-By-Step Instructions1
To replace the air pressure chamber, you will need to uninstall the dishwasher first.
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To do this, turn off the power supply to your dishwasher
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Shut off the water supply valve.
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Next, remove the screws to release the lower access panel.
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Disconnect the water supply line from the inlet valve.
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Be prepared for some water to spill out.
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Remove the mounting screw to release the junction box cover.
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Note the orientation of the wires on the terminal block then loosen the screws to release the wires.
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Remove the screw to detach the wire strain relief bracket.
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Use a flathead screwdriver to help remove the nut to release the strain relief from the bracket.
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Next, disconnect the drain hose from the sink or garbage disposer and feed it through the cabinet.
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Open the dishwasher door and remove the mounting bracket screws.
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To move the dishwasher, you may need to remove the leveling leg locking screws and adjust the legs to lower the appliance.
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Now, to avoid damage, very carefully pull the dishwasher away from the cabinet.
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Pull the hose manifold out of the air pressure chamber.
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Next, pull the old pressure chamber out of the base and disconnect the inlet hose.
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Unhook the wires from the retaining clip and disconnect the wire harness.
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You’re now ready to install the new air pressure chamber.
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Connect the wire harness to the new pressure chamber and secure the wires in the retaining clip.
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Connect the inlet hose and properly align the float switch activator as you insert the pressure chamber into the base.
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Insert the hose manifold into the top of the new pressure chamber.
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Make sure the end of the drain hose is accessible through the cabinet wall then gently slide the dishwasher back into the cabinet.
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Adjust the leveling legs if necessary and replace the locking screws.
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Replace the screws to secure the mounting brackets to the cabinet or countertop.
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Feed the drain hose through the cabinet and connect it to the sink drain or disposer.
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Make sure the hose is elevated above the connection point.
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Insert the wire strain relief through the bracket and secure the nut.
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Align the bracket with the terminal block and replace the screw.
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Reattach the wires to their respective terminals and secure them with the screws.
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Be careful not to over tighten the screws.
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Replace the junction box cover and secure it with the mounting screw.
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Reconnect the water supply line to the inlet valve.
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Replace the lower access panel and secure the screws.
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You’re now ready to turn the water supply back on as well as the power and confirm that the dishwasher is functioning properly.