GE Appliances GDT645SYNFS how to clean the air gap
Whenever 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.
You need
- Toothpick
Steps
- Turn off the dishwasher and lift off the air gap cover.
- Remove the plastic cap under the cover and clean it with a toothpick.
- Refit the cap and the cover.
Source: Care and cleaning: Does your dishwasher have an air gap? Source: Care and cleaning: Does your dishwasher have an air gap?, p. 21
Used for
Other GDT645SYNFS procedures
- How to clean the filtersEvery other month or more often with heavy use, and when wash results drop or dishes feel gritty.
- 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
- 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.