GE Appliances GDT645SYNFS how to clean the filters

Every other month or more often with heavy use, and when wash results drop or dishes feel gritty.

You need

• Sponge or soft brush

Steps

1. Take out the bottom rack.
2. Twist the Ultra-Fine Filter assembly counterclockwise and lift it out.
3. If the assembly has a separate filter basket, twist the basket counterclockwise to unlock it, pull it off and empty out food particles.
4. Rinse the filter parts in warm soapy water; use a sponge for stubborn particles.
5. Lift the Fine Filter (mesh plate) up and out from under its two rear tabs and rinse it in warm soapy water. Scouring pads and stiff brushes scratch it; use a soft brush or sponge.
6. Put the Fine Filter back under the two rear tabs, refit the filter basket by twisting it clockwise, and refit the Ultra-Fine Filter.

Source: Care and cleaning: Filters Source: Care and cleaning: Filters, p. 21

Used for

• Controls respond but the dishwasher never fills with water
• Dishes and flatware are not clean

Other GDT645SYNFS procedures

• How to clean the air gapWhenever the dishwasher is not draining well, if the sink has an air gap. The air gap is not part of the dishwasher and the warranty does not cover it.
• How to fill and adjust the rinse agentAbout once a month, and when spots or poor drying appear. The indicator window does not light up.
• How to remove white film with citric acidWhen glassware, dishware or the tub has a white hard-water film. GE says it can be repeated several times a year.

Sources

1. 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.
2. 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.

Applies to

GDT645SYNFS. United States.

Source

Owner's Manual, Dishwashers GD*565-665, DD*700 and PD*715-785 Series, 49-4000270 revision Rev 0, 2022-07; Quick Specs, GDT645SFN/SGN/SMN/SSN/SYN Stainless Steel Interior Dishwasher with Hidden Controls, GDT645SFN/SGN/SMN/SSN/SYN revision Specification revised 6/20, 2020-06

Last verified

13 November 2026

Handbook

GE GDT645SYNFS dishwasher in Dishwashers; all GE Appliances handbooks