Bosch she3ar72uc 28 dishwasher error code e 15 — after sink disposal install

Use only checks that match the exact appliance or system and its official guide.

1. Check 1

   Photograph the complete E15 display before switching anything back on, and record when it appeared relative to the garbage-disposal installation, whether a cycle was running, whether the dishwasher was full of water, and whether the pump continued running.

   Expected result: The display is exactly E15 and began immediately after the disposal work, or the code is different, incomplete, or accompanied by retained water or an active leak.

   Next step: Keep the photo and installation timeline for Bosch and the plumbing installer. If water is present or the code is E15, close the dishwasher water-inlet tap before inspecting anything else.

   Stop if: Stop immediately for water near electrical parts, an overflow, smoke, sparks, burning odor, a hot cord or socket, or a repeatedly tripping protective device.

   Why this matters

   Why: Bosch defines E15 as the base safety switch detecting water, but the code alone cannot show whether the water came from the new drain connection, an internal leak, or another event. A different or incomplete indication must not be decoded as E15.

2. Check 2

   With the dishwasher water supply closed and power isolated only from a dry, safe location, inspect the visible under-sink garbage-disposal connection without disconnecting a hose or pulling the integrated dishwasher. Look for the disposal dishwasher-port plug still in place, a loose clamp, a sharply kinked hose, or a hose routed without the required high loop or air gap.

   Expected result: The disposal port is still plugged, the clamp or connection is visibly loose, the hose is kinked, or the drain hose drops below the required routing before rising; alternatively the visible connection is dry and correctly routed.

   Next step: Photograph the condition and have the installer or a qualified plumber correct the connection under local code. Do not cut, disconnect, or re-plumb a pressurized or wet connection yourself, and do not run the dishwasher to test it while E15 remains.

   Stop if: Stop if the inspection requires moving the dishwasher, opening the base, touching wet wiring, working on a pressurized line, or reaching a sealed pump or float area.

   Why this matters

   Why: Bosch's installation instructions say to remove the garbage-disposal plug before connecting the dishwasher drain hose and require a high loop or air gap. A visible installation defect makes the new connection a plausible contributor to drainage, backflow, or a spill, but it does not prove that the E15 safety switch was caused by that defect.

3. Check 3

   Without removing panels, compare the visible wetness and location: inspect the cabinet floor and the accessible underside of the sink/disposal connection for fresh water, while leaving the dishwasher base and toe-kick closed.

   Expected result: Fresh water is concentrated at the new disposal or sink connection; the floor is wet; the exterior is dry but E15 persists; or water is visible near the dishwasher's electrical area.

   Next step: Keep the water supply off. Ask the installer to address a visible external connection leak, and contact Bosch-authorized service for persistent E15 or any water that may have entered the base. Provide the photos and exact location instead of guessing a part.

   Stop if: Do not tilt the dishwasher, remove its base or toe-kick for diagnosis, probe wiring, or reconnect power to see whether the alarm returns.

   Why this matters

   Why: Water at the new connection supports an external plumbing installation problem; a dry exterior does not rule out water retained in the dishwasher base; and water near electrical parts is a safety event rather than a normal drain fault. These observations cannot identify a pump, valve, seal, or control board.

4. Check 4

   Check Bosch's exact SHE3AR72UC/28 support record and report the E15 code, production suffix, disposal-installation date, water location, and any visible drain-routing defect to Bosch service and the installer. Do not apply a reset sequence unless Bosch gives one for this exact situation.

   Expected result: Bosch confirms the exact model record and directs service, the code remains after the water is off, or the external connection is corrected but the indication returns.

   Next step: Leave the dishwasher out of service with the water off and arrange Bosch-authorized diagnosis. Give the technician the code photo, model SHE3AR72UC/28, installation timeline, and connection photos.

   Stop if: Do not repeatedly reset, run a rinse cycle, open the control housing, bypass the safety switch, or replace a pump or board from the code alone.

   Why this matters

   Why: Bosch's E15 guidance treats the indication as an activated leakage-protection condition and directs the water inflow to be turned off and support contacted. Recurrence or an unverified base condition exceeds safe owner-level diagnosis; E15 is not proof that a drain pump assembly should be ordered.