A Bosch WAT28400UC that stops mid-cycle should be read from its display, which Bosch's error message table covers. A flashing door symbol means the door is not closed properly; E:93 means hot water was not available; E:32 alternating with END means the unbalanced load detection interrupted the spin because the laundry was unevenly distributed (not a fault); E:18 is a drain fault from suds or a blocked pump. The manual also says a cycle interrupted by a power failure resumes when power is restored, and that a program stops if the selector is turned to Off before the end of the cycle. Turn off, wait 5 seconds and on again for an unlisted display.
Differential
Likely causes of “Bosch 300 Series WAT28400 front-load washer stops, pauses or powers off mid-cycle”, and how to tell them apart
- 1
A door not closed
What separates it The door symbol flashes because the door is not closed
How to confirm Check for caught laundry and close the door until it clicks
- 2
An unbalanced load
What separates it E:32 alternates with END because the load is unbalanced
How to confirm Distribute the laundry evenly and run an extra spin
- 3
A drain fault
What separates it E:18 shows and the cycle stops because of a drain fault
How to confirm Use less detergent; clean the hose, pipe and pump
- 4
A hot water fault
What separates it E:93 shows and the cycle stops because of a hot water fault
How to confirm Turn on the hot tap and check the hose
Before you touch a setting
Record this first — changing settings destroys the evidence
- The message that is shown on the display
- Which stage of the cycle it stopped in
- Whether it resumes after an outage
Try in this order
0 of 5 completedRead the display
ReversibleRead the display, which will show the door symbol, E:32, E:18, E:93 or another message.
Fix the cause
ReversibleClose the door, redistribute the load, clean the pump or fix the hot water supply.
Restart
ReversibleRestart, by touching Start or Pause, and a cycle interrupted by a power failure resumes by itself.
Reset an unknown message
ReversibleReset an unknown message, by turning the machine off, waiting 5 seconds, and turning it on.
Call service
ReversibleCall service if the message returns, and give them the model and the E number.
Model-specific
What is true of this model and not of its siblings
- Bosch's error message table
- The manual's Error messages table lists: the door symbol flashing (door not closed), E:93 (hot water not available at the end of the first cycle without hot water), E:32 (unbalanced load, not a fault), E:18 (too much or non-HE detergent, or a blocked pump), and Others (turn off, wait 5 seconds and on again, then call customer service). It gives the fault, the cause and the measure for each.
- When to call
- Bosch says service calls for issues that could have been solved by its troubleshooting table may not be covered under the warranty, so rule out the listed causes first. When you call, have the E-Nr. and FD numbers ready; they are on the identification plate inside the door or on the back of the washer, and the number for Bosch customer service is 1-800-944-2904.
- Parts for this problem on the WAT28400 (RepairClinic, 2026-09-20)
- pressure sensor, part number 10009438, at $43.31; operating module pro, part number 11027074, at $183.33; drain pump, part number 00145753, at $155.35.
- Other models this page answers
- These steps also fit the 300 Series WGA12400UC washer, 800 Series WAW285H2UC washer, 800 Series WGB24600UC washer.
Stop boundary
When this stops being a self-service repair
- !If a message returns after turning off for 5 seconds and on again, call Bosch customer service on 1-800-944-2904
- !If the washer stops repeatedly with a balanced load, call service
Evidence ledger
Sources behind this answer
Bosch's own US owner-support pages for washer error codes and self-help.
Parts and list prices as shown on RepairClinic's parts search for this model number on 2026-09-20.
Exact questions
Common questions
Why did my Bosch washer stop?+
Read the display: the door, E:93, E:32 or E:18 explain most stops.
Is E:32 a fault?+
No; it is the unbalanced load detection interrupting the spin.
What if the power went out?+
The program resumes when power is restored.
What if I turned the selector to Off?+
The cycle is cancelled; select a cycle and restart.
What does E:18 need?+
Less detergent and a clean pump, hose and drain.