MODEL PROFILE
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Error codes and display signals
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MODEL OVERVIEW
About this model: GE GDF645SSNSS
GE GDF645SSNSS is a stainless-steel front-control dishwasher whose exact GE listing confirms Active Flood Protect and a three-digit display. Its linked owner manual explains the LEAK DETECTED alert.
Identify the front-control model
The GDF645SSNSS is GE's stainless-steel front-control version, so the touchpads and three-digit countdown are part of the appliance you are diagnosing, rather than a drawing borrowed from a different dishwasher. The exact product specification also names a CLEAN progress light, a SANITIZED light, control lock and Active Flood Protect. GE describes a water leak sensor that reacts when the water level is too high and pumps water out. These details matter when reading the family manual: the general warning says leak protection is present only on some models, while this particular product listing positively identifies the protection and the display needed to show a message. Read the model label inside the tub before applying these instructions to another finish or series.
What LEAK DETECTED means
In the linked manual, LEAK DETECTED is an actual display message, not a numbered diagnostic code inferred from a symptom. The operating section says a detected leak ends the wash and starts draining; the troubleshooting table maps the message to a possible leak and directs the owner to service. Record the wording on the display and leave the cancelled cycle stopped while arranging that assessment. The notice does not locate the leak or prove which component failed, so it would be misleading to recommend a part from the message alone. A flashing Start status after opening the door is treated separately in the table and has a restart sequence; it should not be relabelled as this leak warning.
Read cycles and completion lights correctly
Five cycles are listed for this exact model, including AutoSense and a one-hour wash. The manual explains that AutoSense adjusts a cycle to the soil level, whereas the short cycle is meant for lightly soiled dishes. A longer countdown after choosing options is therefore not, by itself, evidence of a fault. The CLEAN lamp marks a finished wash. SANITIZED has a narrower meaning: it is associated with a sanitizing choice only when the required conditions were met. Steam PreWash and the Sani option are real options on GDF645SSNSS, yet neither indicator should be mistaken for LEAK DETECTED. Check the selected cycle and lights before describing a display to service.
Loading and drying in everyday use
GE lists upper- or lower-rack wash zones, four bottle jets, an adjustable upper rack and removable filtration with a Piranha disposer for this SKU. A one-rack wash zone targets the rack you selected; it is not a remedy for a leak message. Raise or lower the upper rack to fit tall items without blocking the rotating arms, and reserve the bottle jets for dishwasher-safe narrow containers. Dry Boost and fan-assisted drying are specified on the exact listing, so damp plastic after a lightly loaded cycle can be investigated through the selected drying option before being called an electronic fault. The manual's wash-zone description helps separate ordinary option behavior from a stopped, draining cycle.
Care that fits the SS suffix
The linked manual treats an SS model suffix as a stainless-steel exterior and gives a different cleaning method from its painted-panel advice. Use a suitable soft, grit-free approach along the brush lines, and avoid bleach, chlorine products, appliance wax and polish on this door. The stainless exterior is a finish-care issue; it does not explain the electronic leak alert. Inside the machine, GE recommends periodic filter inspection, approximately every other month with adjustment for use, especially if wash results become gritty. The manual also specifies an inlet-water range of 120 to 150 degrees Fahrenheit for cleaning and dish protection. Those maintenance checks can address routine performance complaints, while LEAK DETECTED still follows the separate service instruction.
Verified model details
The exact SKU has front controls, flood protection and a countdown display.
Source for this detailLEAK DETECTED stops a cycle, triggers draining and calls for service.
Source for this detail · Source page: 6The stainless exterior, bottle jets and adjustable rack have separate care and loading implications.
Source for this detail · Source page: 22
This description summarizes the linked source documents; check each cited source for your exact model and region.
Manufacturer source
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GE® ENERGY STAR® Front Control with Stainless Steel Interior Dishwasher with Sanitize Cycle & Dry Boost - GDF645SSNSS - GE Appliances
Open official sourceIf there is a safety risk, stop using the appliance and follow the manufacturer’s instructions.