GE Dishwasher Control Board Blinking Green Light: Causes and Solutions 

You walk into your kitchen, ready to start a load of dishes in your trusty GE dishwasher. As you press the necessary buttons and wait for the familiar hum of activity, you’re greeted by an unexpected sight: a blinking green light on the control panel. 

You press Start again, but the machine won’t budge—what gives? 

When a GE dishwasher control board is blinking a green light, it’s often an indication of an issue that requires immediate attention. This article discusses the common causes behind the blinking, as well as solutions to restore your dishwasher to proper working order. 

Common Causes of Blinking Green Light in GE Dishwashers

The blinking green lights on a GE dishwasher serve as a diagnostic indicator to communicate a problem. The root cause can differ depending on the dishwasher model, so it’s wise to consult your GE dishwasher manual to determine what the issue is. 

The most common causes for a blinking dishwasher control panel are as follows: 

  • Door latch issues: A malfunctioning or improperly closed door latch can trigger a blinking light. To prevent leaking, GE dishwashers are designed to only start when the door is securely closed. If the door isn’t properly latched, the dishwasher won’t start. 
  • Water supply problems: If the dishwasher isn’t getting an adequate supply of water, it might display a blinking green light to signal a problem. Causes can range from a closed water valve and low water pressure to a kinked inlet hose.
  • Technical malfunctions: Temperature sensors, pressure sensors, and connections may malfunction, causing the control board to interpret the issue as an error through blinking green lights. 
  • Control lock: Most GE dishwashers have a Control Lock/Child Lock feature to prevent children from interrupting or activating a dishwasher cycle. When the Control Lock is engaged, the blinking green light informs the user that the controls need to be unlocked to resume normal operations. 
  • Control Panel Glitch: as with any computerized system, GE dishwashers can occasionally experience software glitches that cause unexpected behaviour. This usually occurs when the machine is several years old and hasn’t received routine maintenance for a while. 

How to Fix a Blinking Green Light on Your GE Dishwasher

Here’s a step-by-step guide on addressing the issue of a blinking green light on your GE dishwasher control board:

Check the Door Latch

Check the dishwasher’s door latch. The door must be properly closed to start a wash cycle. 

Firmly close the door and make sure it’s properly aligned with the latch mechanism. If it isn’t, you might be dealing with a damaged or faulty latch.

In such cases, you need to order and install a new latch to fix the issue. Dishwasher latches cost between $24 to $100, depending on the model of the machine. 

Front view of open dishwasher showing the control buttons

Inspect the Water Supply

Ensure that the water supply valve connected to the dishwasher is fully open to allow ample water supply. 

Then, check the water pressure in your home. If other faucets have low water pressure, you might have to install a water pressure regulator or a water pressure booster to fix the issue. 

It’s also worth examining the inlet hose for twists, kinks, or blockages that might obstruct water flow. 

Straighten and clean the hose to the best of your capabilities. You can do this by disconnecting the hose and pouring hot water and a mixture of baking soda and vinegar to clear out blockages. 

Disable Child Lock

If you haven’t already, deactivate the Child Lock

For older GE models, you can do this by pressing the Lock pad twice within three seconds. 

For newer models, press and hold the Dry/Dry Boost or Cycle pad at the same time for three seconds. 

The Child Lock light will turn off to let you know the feature is disabled. 

Disable Demo Mode

If your dishwasher appears fully functional but isn’t cleaning dishes, it’s possible that you accidentally engaged Demo Mode. 

Demo Mode, also known as Service Mode, is a feature designed to showcase the dishwasher to potential customers without actually running full operational cycles. Dishwashers in service mode light up and make sounds as normal, but they won’t perform actual washing, rinsing, or drying cycles. 

To disable this feature, disconnect the dishwasher for 30 seconds then reconnect the power. Then, press and hold Start and Delay simultaneously for five seconds. 

For GE dishwashers with the model number GDF, DDT, PDR, and ADT, disconnect the power for 30 seconds and reconnect the power. Then, press and hold Start and Heated Dry or Power Dry function for five seconds.

Perform a Soft/Hard Reset 

Performing a soft reset on your GE dishwasher can often resolve minor glitches caused by a power surge or electrical fault, including when a dishwasher starts blinking for no apparent reason. 

A technician repairing the dishwasher

To do this, turn off the dishwasher via the power off or reset button and unplug the dishwasher from the electric outlet. If you can’t access the outlet, turn it off via the circuit breaker. 

Wait for two to five minutes to allow the internal components to fully discharge and reset. When the time is up, plug the dishwasher back in and turn it on. Check if the blinking dishwasher lights have disappeared. 

If it hasn’t, perform a hard reset. Follow the same steps as the soft reset, but instead of waiting for two to five minutes, leave the dishwasher disconnected for 15 to 30 minutes. 

Wrapping Up 

By following the outlined steps above, you’re better equipped to address the blinking lights and restore your dishwasher to its normal operation. 

You can solve minor glitches through simple resets and adjustments, but more complex problems—like a faulty or malfunctioning electronic control board—require professional help. 

As you navigate through these troubleshooting steps, remember that your dishwasher’s user manual can also be an invaluable guide. It’ll help you understand the meaning behind green light patterns and guide you through the necessary troubleshooting steps.

David Shaw
Dishwashers Review in UK