INTRODUCTION
- How to identify a microswitch failure
- Safety
- How to disassemble the dispenser and access the switch
- How to replace the switch
- Re-assembly
- Resetting the power failure code
- Testing
TOOLS:
- Phillips #2 Screwdriver (1)
PARTS:
- Microswitch: LG3B73362F (1)
Step 1 - Identify a microswitch failure
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This appliance provides water and ice when a dispenser flap is pressed. This flap activates a small switch, called a "microswitch" to call for water or ice. However, nothing will happen if the refrigerator doors are open. So make sure the doors are firmly closed before you assume the switch has failed.
Step 2 - Safety First!
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Please: SAFETY FIRST. Don't blow yourself up. You will be working on an appliance powered by the AC mains! Disconnect completely from AC power before and during these repair procedures.
Step 3 - How to get at the switch
The suppliers of this appliance refused to provide access to a service manual, an illustrated parts breakdown, or to offer any tips. The microswitch was purchased, and information was sought online.
The black control panel, the water/ice buttons, and the black dispenser port are a complete assembly. There is a single Phillips head screw holding this assembly in place. Look beneath just next to where the ice comes out to find the screw. Remove it carefully, as it has a special thread, and prepare for the next step.
Grab the black dispenser port with a firm hand and hold the door from opening with another hand or your shoulder. Firmly pull the assembly away from the door. It will take a quick, firm pull to detach it. The assembly is held in place by several plastic lock tabs that should give way without breaking.
BE CAREFUL. There is a short length of connecting cable attaching the panel to the refrigerator door assembly. Do not pull so hard that you destroy the connector.
Remove the connector (a single Molex type) from the refrigerator door. It's a latching type, requiring a squeeze to release the latch.
Remove the rigid plastic water dispenser hose from the control panel. Note how it is attached.
Step 4 - Replace the microswitch
First, remove a whitish plate (which may be crudded and discoloured) that holds the switch in place. This plate is attached by two Phillips head (NON-STAINLESS) screws.
The screws in the unit were found to be rusted, even after only one year of ownership. One screw may require vice grips for removal. The other might need a notch cut into its head to be unscrewed with a flat blade driver.
After removing the cover, note the position of the switch and the two wires with blade connectors. Replace the switch with your new one. Clean the plastic thoroughly, especially the ice port, which can accumulate debris.
It is recommended to re-assemble and replace the original screws with stainless steel pan head self-tapping screws to prevent future rusting.
Step 5 - Re-assemble the panel
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Attach the Molex connector and the water dispensing hose.
Making sure all cables are not crushed or jammed, carefully align the panel with its opening in the door. Ensure the white ring at the base of the ice dispenser is not obstructed as you press the panel back into place.
Once the panel is lined up, press it firmly back into the door, ensuring even pressure. A gentle bump of your hand should snap the edges into their locks. If done correctly, the panel should appear undisturbed.
Step 6 - Re-connect AC mains power
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You may see an error code on the display, such as "1E". This indicates a power failure or similar issue.
To reset the refrigerator, press the ENERGY SAVER and the LIGHTING buttons (which are touch panels) simultaneously. This may require two hands. Hold the button press for about 10 seconds, or until all segments on the panel light up. This is the reset sequence, and the unit will then be ready for testing.
Step 7 - Test the switch
Try it out.
Press the ICE button, place a glass beneath the dispenser, and press the dispenser flap. You should hear a firm "click" from the new microswitch, followed by the sound of the ice dispenser motor. Ice may drop into your glass.
Congratulations. The repair is complete.
To reassemble your device, follow these instructions in reverse order.
