GE GDT630P (GDT630PSMSS) top-control dishwasher with Dry Boost: quick sheet

Covers: GE 24-inch hidden top-control GDT630P** with plastic tall tub: GDT630PSMSS (stainless) and other finishes on the same base model; GDF630P** is the front-control sibling. Sold approx. 2018-2023 (inferred from listings; GE marks it no longer manufactured and a retailer points to GDT630PYRFS as the newer version). Find the model/serial tag on the tub edge inside the door. Build-date reading from the serial is not stated here (not confirmed by two sources for this family); see the guide find-model-and-serial-number-on-any-appliance.

Cross-checkedBrands: GE9 components

Mid-line GE built-in with a plastic tall tub, 16 place settings, 50 dBA, third rack, bottle jets, Piranha hard food disposer, Sanitize and Dry Boost (heated dry boost). GE dishwashers of this generation report by display or light pattern depending on model: H2O (no fill), C1/C3 (drain), C6/C7 (water temperature / thermistor), C8 (detergent cup), PF (power failure, not a fault). Meanings vary by model; see the GE dishwasher codes and the GE / GE Profile / Café dishwasher field service manual.

Safety first

Switch off the circuit (or unplug) and close the water supply before removing the kick plate or pulling the unit.
Hardwired units: open the junction box only with the breaker off and verified dead.
Water in the sump may be hot right after a cycle; the heating element stays hot for a while.
Live-voltage checks at the valve, pump, heater or board are caution work.
Watch for broken glass in the filter and sump.
Flood risk: keep towels down and confirm no leaks after reconnecting.

How it works

Tub and racks: plastic tall tub wrapped in an insulation blanket, three nylon racks plus cutlery tray (Greentoe).

Pump and wash: single-speed wash motor and three-level wash; bottle jets in the upper rack wash tall bottles from inside. Four cycles (Greentoe) with a soil sensor; Sanitize and Steam pre-wash are options on this line.

Filtration: Piranha hard food disposer with removable filter.

Drying: heated dry with Dry Boost, which GE says gets hard-to-dry items drier than its standard dry.

Controls: hidden top controls with a status light, delay start and child lock.

Components & tests

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Official manufacturer documentation

Always confirm values against the tech sheet for the exact model.

OnCall Tech is a reference tool for trained technicians and can make mistakes. Always disconnect power and confirm with the manufacturer's documentation before you work. © 2026 OnCall Tech. Original content; not a reproduction of any manufacturer document.Generic part photos (not of this brand): LCD TV with the panel removed, showing the grid of lit LED backlights by RobertKuhlmann, CC BY-SA 3.0

Diagnostic guides for this appliance

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7 steps ~20 mineasy

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Frigidaire / Electrolux: diagnostic mode, last-fault recall and relay-test codes that are not faults

Newer Frigidaire/Electrolux dishwashers show i-codes (i10, i20, i50 and similar) and two-letter codes; during the relay test inside diagnostic mode they also show short codes that only confirm the test is running and are not faults. Front-load washers keep a last-code readout you reach with a button pair or knob position. Refrigerators lose the fault code when the plug is pulled. Entry sequences differ by model and the sources conflict, so get them from the service data sheet on the unit.

6 steps ~20 mineasy

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Bosch 800 Series 24-inch top-control SHP78CM** family (for example SHP78CM5N, stainless anti-fingerprint, pocket handle). ENERGY STAR lists SHP78CM** on the market from June 2023 (certified December 2022). This is the newer platform; for the older SHPM88Z75N see its own quick sheet.

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Frigidaire Gallery 24-inch top-control GDSH4715A* family: GDSH4715AF (stainless) and GDSH4715AD (black stainless), per ENERGY STAR (GDSH4715****). On the market from July 2023 (certified May 2023), US and Canada.

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