Dishwasher water supply error (E4)

Case #101 · Maple Grove House · Kitchen

Case summary

Appliance: Midea dishwasher
Model: MDT24H3AST
Report date: Jul 17, 2026
Case status: Open
Confidence: 86%

Immediate safety status: Use caution

Use caution. Water and electricity are involved. Switch off power at the breaker before pulling the unit out, and stop immediately if you find active leaking.

Most likely cause

An interpretation of your evidence — not a confirmed diagnosis

86%

The dishwasher is likely not receiving sufficient water because the braided supply line is being compressed or kinked when the appliance is pushed into the cabinet.

Supporting evidence

E4 error code on this model indicates insufficient water supply within the fill window
You reported the unit was recently pulled out and pushed back for floor cleaning
No fill sound is heard in the first 60 seconds of the cycle
No visible leaking — consistent with a restricted line rather than a failed valve
Photo of the supply line shows a tight bend near the cabinet entry point

Other possible causes

Inlet valve failure or clogged inlet screenPossible (est. 9%)
Household water pressure drop or partially closed shut-off valveLess likely (est. 4%)
Control board misreporting fill statusUnlikely (est. 1%)

Recommended next steps

0 of 7 steps completed

1Turn off power to the dishwasher.
2Pull the dishwasher partially out.
3Inspect the braided water line.
4Reposition the line through the cabinet side channel.
5Confirm the hose has a gradual bend rather than a sharp fold.
6Restore power and run a short test cycle.
7Stop testing immediately if leaking occurs.

Repair decision

DIY suitability: Moderate
Professional recommended: Only if repositioning does not resolve the error
Estimated DIY cost: $0–$25
Typical professional visit: $140–$280
Replacement recommended: No

Questions to ask a contractor

If you decide to bring in a professional

1Will you check the inlet valve screen before replacing any parts?
2Is the diagnostic fee applied toward the repair if I approve the work?
3Can you confirm the supply line routing meets the installation manual's bend-radius guidance?
4What warranty do you provide on labor if the error returns within 30 days?

Evidence and reasoning

How this conclusion was reached — facts kept separate from interpretation

Observed facts

Error code E4 displayed after ~2 minutes of cycle start
Unit was moved during floor cleaning on Jul 12
Supply photo shows compressed braided line at cabinet entry
No water on floor or under sink

Likely interpretation

The combination of an E4 fill error appearing immediately after the unit was repositioned, with no leaking and no fill sound, points to a mechanical restriction of the supply line rather than component failure. This is an interpretation based on the evidence provided, not a confirmed diagnosis.

Missing information

Whether the under-sink shut-off valve is fully open
Water pressure at another fixture on the same line
A video of the first 2 minutes of a cycle (audio helps confirm fill behavior)

Confidence limitations

Confidence is based on reported symptoms and photos; the line has not been physically inspected.
If repositioning the line does not clear the error, the likelihood of an inlet valve fault rises substantially and professional evaluation is recommended.

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DwellTrace provides informational guidance and does not replace a qualified licensed professional. Stop immediately and seek professional assistance when gas, fire, electrical shock, structural damage, active flooding, or other immediate hazards may be present.