How to Fix Dishes Not Drying on a GE GDT645SYNFS Dishwasher, Step by Step Instructions
Step by step instructions for the GE GDT645SYNFS (dishwasher, top control, dry boost). Parts and access points can differ a little by production year. The steps below cover the common layout for this platform, and the model notes flag its quirks.
You can fix a dishwasher not drying dishes on a GE GDT645SYNFS yourself in 15 to 45 minutes. Difficulty is easy. A pro charges a $120+ service call.
- 5 steps, 15 to 45 minutes, easy difficulty.
- Tools you need are multimeter (only if testing the element).
- Parts to buy are rinse aid ($5 to $8). Heating element only if it tests dead.
- Unplug the machine before you start.
If you test the heating element, kill the breaker first.
Tools
- Multimeter (only if testing the element)
Parts
- Rinse aid ($5 to $8). Heating element only if it tests dead
Step by step
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1 Fill the rinse aid and set it high
The unglamorous fix that works. Fill the dispenser, set its dosage to maximum, and give it two weeks of loads. Rinse aid is how modern dishwashers dry.
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2 Use the heat/extra dry option
Eco and quick cycles skip heated dry on many machines. Turn on the heated dry, extra dry, or sanitize option and compare.
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3 Open the door at cycle end
Condensation dry machines (Bosch style, no exposed element) benefit hugely from cracking the door when the cycle ends, some do it automatically.
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4 Check the heating element (exposed element machines)
If dishes AND the tub interior are cold at cycle end, breaker off, then continuity test the element at its terminals under the tub, open circuit means replace it.
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5 Load for drainage
Cups angled, plastics up top, nothing nested. Water pooled in mug bottoms isn’t a machine fault, it’s geometry.
GE GDT645SYNFS notes & error codes
Fine filter = monthly rinse. Dry Boost still benefits from rinse aid, the two are additive, not alternatives.
| Code | What it means |
|---|---|
| H2O | Fill |
| PrS | Pressure sensor |
| LEAK | Base moisture |
Full details for this machine, common problems, causes, and costs, are in the GE GDT645SYNFS repair guide. The general version of these instructions is here.
A dead heating element or a stuck vent fan is a modest repair, worth a pro visit if under tub electrical work isn’t your idea of a weekend. If you'd rather skip it entirely, find a dishwasher repair pro near you
What this repair costs professionally
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