GE Appliances GDT645SYNFS dishes don't dry
Cause 1 of 3The inlet water is too cool. Source: Troubleshooting Tips: Dishes don't dry, p. 23
First checkMake sure the inlet water is at least 120 °F.
Causes and checks
The inlet water is too cool. Source: Troubleshooting Tips: Dishes don't dry, p. 23
- Make sure the inlet water is at least 120 °F.
- Select Dry Boost and the Boost option, or a sanitize cycle option.
The rinse agent dispenser is empty. Source: Troubleshooting Tips: Dishes don't dry, p. 23
- Fill the rinse agent dispenser. See Fill and adjust the rinse agent.
The dishes need more drying time. Source: Troubleshooting Tips: Dishes don't dry, p. 23
- Leave the door closed after the Clean light comes on, so the fan can run for another 90 minutes. Opening the door ends the fan run.
All 3 causes checked. Contact GE Appliances: 800.432.2737.
Service
If the checks above do not clear it, contact GE Appliances: 800.432.2737, geappliances.com/. United States, for service (general enquiries 800.626.2000). Canada: 800.561.3344. Source: Consumer Support, p. 26
Other GDT645SYNFS problems
- Dishwasher won't start or run4 causes in the manual. First: the Start sequence was not followed. The cycle starts only if the door is closed within 4 seconds of pressing Start.
- Controls respond but the dishwasher never fills with water3 causes in the manual. First: the door is not completely closed.
- Water left in the bottom of the tub or not pumping out2 causes in the manual. First: the air gap is clogged, or the drain loop or air gap was not installed as the installation instructions require.
- Dishes and flatware are not clean5 causes in the manual. First: the Ultra-Fine Filter or the Fine Filter is clogged.
- Spots and film on glasses and flatware3 causes in the manual. First: extremely hard water, or the rinse agent dispenser is empty.
- White film on glassware, dishes and the tubA low-quality phosphate-free detergent is the likely cause of a white film on glassware, dishware and the interior. Hard-water minerals also leave a white film on the tub interior.
- Glassware is cloudy and the cloudiness does not wash offEtching, which is permanent. It comes from soft water combined with too much detergent, or from inlet water above 150 °F.
- Suds in the tub2 causes in the manual. First: the wrong detergent was used. Detergent not made for dishwashers fills the dishwasher with suds.
- Detergent is left in the dispenser cupDishes or utensils block the detergent cup or stop its door from opening.
- Control panel lights go off while setting the controlsMore than 30 seconds passed between pad presses. The display also turns off when the door stays open for two minutes.
- Black or gray marks on dishesAluminum utensils rubbed against the dishes.
Sources
- Owner's Manual, Dishwashers GD*565-665, DD*700 and PD*715-785 Series. GE Appliances, a Haier company. Document 49-4000270, revision Rev 0, 2022-07, 78 pages, en-US. images.salsify.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.
- Quick Specs, GDT645SFN/SGN/SMN/SSN/SYN Stainless Steel Interior Dishwasher with Hidden Controls. GE Appliances. Document GDT645SFN/SGN/SMN/SSN/SYN, revision Specification revised 6/20, 2020-06, 2 pages, en-US. images.salsify.com (PDF). Listed on the manufacturer's support page. Retrieved 13 November 2026.
Page numbers are the numbers printed in the manual. Where this page and the manual differ, follow the manual.