Frigidaire i40 directs attention to sump food soil
Frigidaire defines i40 as a clogged filter or sump condition caused by food soils. Clean the model’s glass trap/filter as directed and rerun the unit; if the indication returns, contact support rather than applying an unrelated code meaning.
Frigidaire DB400A is the exact code in this catalog record. This topic should be evaluated for that code and dishwashers category. The original source record is linked below; unrecorded settings, dates and compatibility remain unknown.
Check the cycle state and household water clues first, then isolate whether the symptom points to an interrupted start, low supply, or appliance service need.
Owner guide: Dishwasher not filling
Category & symptom guidance
Dishwasher not filling
3 minute read · Shared guidance for dishwashers
Confirm the machine reached its fill stage
A dishwasher may pause before water is audible while controls initialize, a delay is counting down, or a cycle is sensing conditions. Check whether a delay indicator is active and whether the cycle actually started. On some models, the door must close promptly after Start; an open or interrupted door can leave the start indicator flashing.
Use the display or indicator pattern as evidence, not as a diagnosis by itself. A beeping reminder or flashing start light may mean the door was left open or the cycle was interrupted. Follow the exact model’s restart or cancel directions and note whether the machine then advances to a wash sound.
Compare household water flow
Open a nearby faucet and compare its flow with normal. If several faucets are weak, the issue may be a temporary household supply interruption; wait until normal pressure returns before diagnosing the dishwasher. If only hot water seems affected, check whether the household hot-water service is operating as usual.
Do not infer a precise inlet pressure from faucet feel. Manufacturer limits vary by model; GE's GD*640–670 / PD*705–795 owner manual lists a pressure range for its covered families, but that figure should not be applied universally. If water pressure is repeatedly low, a plumber or water provider can assess the household supply without opening the appliance.
Look for an external shutoff clue
If the dishwasher was recently installed, moved, or serviced, the water supply valve may not have been reopened. Only inspect a clearly accessible household shutoff if you can identify it safely and operate it normally. Do not pull the dishwasher out, reach behind it, or turn an unknown valve that may serve another fixture.
A kinked or crushed inlet hose can restrict flow, but the hose is often hidden beneath cabinetry. Do not reposition a built-in appliance to inspect it. Report a recent cabinet, flooring, or plumbing change to the installer or repair service, since that history can narrow the cause.
Distinguish a no-fill from a no-wash
Listen from outside the closed machine for the sequence of sounds: a brief drain at cycle start may occur before filling, while a quiet pause can also reflect normal control behavior. Do not open the door during an active fill to look for water. If safe and appropriate, pause using the door or controls as the manufacturer describes, then observe water only after the cycle is stopped.
A tub that contains water but has no spray action is not a no-fill symptom. That points toward circulation, loading, or wash-system diagnosis. Record whether the tub is dry, has a shallow residual pool, or has a visible fill level; avoid reaching into the sump or trying to turn hidden components.
Escalate with a concise symptom record
If the start is confirmed, household flow is normal, and the tub remains dry through the expected fill portion, stop repeating cycles and contact the manufacturer or a repair service. Provide the model, any code or flashing pattern, recent installation or plumbing work, and whether the dishwasher has power and a visible water leak.
A technician can assess the inlet valve, float or sensing system, and control path without guesswork. Those components are internal and can involve water and electrical hazards, so owner checks should end at visible household controls and observations. If water is leaking or a breaker trips, leave the dishwasher off and report that immediately.
What to do with what you find
Other household faucets also have reduced flow.
A general supply issue is plausible.
Wait for normal household flow and retest one dishwasher cycle.
Have these details ready
Model and any code or indicator pattern
Whether nearby faucets have normal flow
Recent installation, plumbing, or flooring work
Common questions
Could a short drain sound at startup mean the dishwasher is not filling?
Not necessarily; some machines drain briefly before filling. Observe whether the cycle proceeds.
Can I test the inlet valve myself?
No. Internal valve and electrical checks require service diagnosis.
General background sources
These sources support the shared guide. Exact model specifications and matched family procedures have their own sources above.