The short answer
On an AEG washing machine, a machine that will not start most often comes back to a latched base-tray flood switch, with a door lock that will not confirm closed close behind. Because the machine measures so much of its own behaviour, most faults arrive as a code that is really a timeout — a fill, a drain or a temperature that did not arrive in the window the program allows. That puts the first move in your hands rather than a technician’s: work the checks below in order and stop at the first one that explains what you are seeing.
What you are seeing
- What this fault looks like, and which observations point somewhere else.
- nothing lights and nothing responds
- the panel lights but start does nothing
- the machine hums briefly and stops
- the door will not lock, or locks and immediately releases
- Not this fault: if the machine starts and stalls later, read the cycle page
- Not this fault: if the panel behaves oddly rather than refusing, read the control page
Ranked causes on this platform
- Ranked for an AEG washing machine, which runs a sensor-driven controller that reports a fault code on the display. No measured frequency exists for this address, so the order is platform judgement rather than a share.
- A latched base-tray flood switch — Why: On this platform a trace of water in the base tray latches the machine into a protective state, and it presents as a machine that will not start at all rather than as a leak.
- A door lock that will not confirm closed — Why: No machine will start without a proven lock, and this is the most common single reason for a machine that refuses.
- A control lock or delay start — Why: The machine is doing what it was told, and the only evidence is a small indicator.
- The supply rather than the machine — Why: A tripped breaker, a fault-interrupter or a damaged cord accounts for most dead machines.
- A lid switch on a top-loading machine — Why: The lid switch is a wear item that is operated on every load, and its failure stops the machine dead.
What to check, in order
- The order follows the ranking above: most likely and cheapest first, nothing needing a meter until everything else is eliminated.
- A latched base-tray flood switch — Because: on this platform a trace of water in the base tray latches the machine into a protective state.
- A door lock that will not confirm closed — Because: no machine will start without a proven lock, and this is the most common single reason for a machine that refuses.
- A control lock or delay start — Because: the machine is doing what it was told, and the only evidence is a small indicator.
Checks you can safely do yourself
- Isolate the appliance before any panel comes off, and stop at the first step that explains the fault.
- Tip the machine gently backwards onto a towel to clear the tray, then restore it upright and retry. — Tools: a towel and a second pair of hands — Time estimate: a quarter of an hour
- Close the door firmly and listen for the lock to engage before pressing start. — Tools: nothing — Time estimate: a few minutes
- Check for lock and delay indicators and clear them. — Tools: the owner documentation — Time estimate: a few minutes
- Test the outlet with another appliance and check the breaker and any fault-interrupter. — Tools: a lamp or a socket tester — Time estimate: a quarter of an hour
- Stop condition: Stop there: the next step means metering live terminals or opening a sealed system.
Safety first
Safety
Unplug the appliance or switch off its breaker before removing any panel, because a capacitor can hold a charge after the power is off. Drain the machine before opening a filter or a pump, and expect more water than you think; keep the circuit off while you do it. Never defeat the door or lid interlock. It stops the drum before you can reach it, and a spinning drum does not stop for a hand. A machine full of water is extremely heavy — empty it before it is moved or tipped.
When to call a technician
Call a technician when the supply is proven good, the door locks and the machine still will not start, or when a lock or a motor overload has to be replaced. A machine that hums and does not turn should be switched off rather than retried.
The fact bundle for this address was empty, so no warehouse figure appears. Every number on the page is a program safety constant, cited to its publisher. — Sources
General guidance- 1910.147 — The control of hazardous energy (lockout/tagout) — Occupational Safety and Health Administration, fetched 2026-09-06
Other faults documented for this brand and appliance. — Nearest pages of the same kind
What this page does not cover
This page is generalized across every AEG washing machine family and model number: no family fault list, no model parts list, and no measured figure from the program warehouse. Where a family- or model-specific page exists it goes deeper, and it should be preferred over this one.
Links: - [Common AEG Washer Problems](/blog/aeg-washer-problems) - [AEG Washer: Abnormal Noise or Vibration](/blog/aeg-washer-abnormal-noise) - [AEG Washer: Does Not Clean or Dry](/blog/aeg-washer-cleaning-performance)
Adjacent pages for what this one rules out. — Where to go next
Lead Appliance Repair Technician · 12 years experience
Experienced technician with 12 years specializing in washing machine and dryer repairs across all major brands.
