E19
Siemens Washing Machine
Urgency
⚡ Medium
Attend to soon
Repair difficulty
🔧 Competent DIY
Some experience required
Diagnosis

What this error means

Heating timeout — water is not reaching the target temperature in time

The E19 error means the water in the drum has failed to reach the required temperature within the allowed time. This is most commonly caused by a failing heating element, a faulty NTC thermistor temperature sensor, or heavy limescale build-up coating the element and reducing its efficiency.

⚠️
For information purposes only. Always consult a qualified engineer before attempting repairs. 🔌 Unplug your appliance before any inspection or repair.
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What to try first
Fix time
5–10 minutes
🔧
Difficulty
Competent DIY
🏠
Appliance
Washing Machine

What you'll need first

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Step-by-step

1
Unplug the machine and wait 5 minutes to allow the control board to fully reset, then plug back in and try a fresh programme
2
Select a 60-degree cotton wash
If it completes without error, the fault may have been a temporary sensor glitch
3
Check you have not overloaded the drum
More than three-quarters full significantly increases heating time and can trigger a timeout
4
If you are in a hard water area, run an empty 90-degree cycle with a washing machine descaler
Heavy limescale on the element drastically reduces heating efficiency
Diagnostic

Symptoms to look for

  1. Programmes run significantly over the estimated time shown on the display
  2. Door glass feels cold or only barely warm during a 60 or 90-degree wash
  3. Laundry comes out at room temperature after a hot programme
  4. E19 displayed part-way through a wash programme
Step-by-step repair guide

Diagnostic steps

Time 30–60 minutes
Skill Competent DIY
Test with a hot programme

Unplug the machine for 5 minutes to fully reset the control board. Plug back in and run a 60-degree cotton programme with just 2 to 3 items. After 15 minutes, place your hand flat on the door glass — it should feel noticeably warm to hot. If the glass remains completely cold, the element is not heating at all.

The door glass is the simplest and safest way to check whether the water is actually heating without interrupting the cycle.
Check for drum overloading

Open the machine and reduce the load until the drum is no more than three-quarters full. A correct load allows you to fit your open hand flat across the top of the laundry with room to spare. Restart the programme. An overpacked drum restricts water circulation and can cause the machine to run significantly over the expected time, triggering the heating timeout.

Overloading is one of the most frequently overlooked causes of E19 — always check this before assuming a component fault.
Descale the heating element

If you live in a hard water area, add a washing machine descaler to the empty drum and run a 90-degree maintenance cycle. Limescale acts as an insulating layer on the element surface — a heavily scaled element can consume full electrical power and yet transfer very little useful heat to the water.

Run the descale cycle with the drum completely empty and without detergent.
Access the heating element

With the machine fully unplugged, remove the rear panel by undoing the screws around its edges and lifting it away. The heating element is a U-shaped metal bar mounted at the lower rear of the drum casing. It has two electrical spade terminals and a small NTC thermistor sensor clipped to or near it.

Only perform this step with the machine completely disconnected from the mains. The element terminals carry 230 V during normal operation.
Test the heating element resistance

Set a multimeter to resistance (ohms). Disconnect the wiring from both element terminals. Touch one probe to each terminal. A healthy element reads between 20 and 50 ohms. A reading of zero (short circuit) or OL (open circuit) both indicate the element has failed and must be replaced.

Also test between each terminal and the metal element body or nearby earth point. Any reading other than OL here means the element has an earth leakage fault — the machine must not be used and the element must be replaced immediately.
Test the NTC thermistor

The thermistor is the small cylindrical sensor mounted on or near the element, connected by two thin wires. Disconnect the wires from the control harness and test across the two thermistor terminals with a multimeter set to resistance. At room temperature a working thermistor typically reads between 10,000 and 50,000 ohms. A reading of zero or OL means the thermistor is faulty.

A faulty thermistor may not prevent heating but causes the control board to misread the water temperature, triggering a timeout even when the element is working — always test both.
Did this solve your issue?
Escalation

When to call an engineer

  • Heating element resistance is outside 20 to 50 ohms or shows a reading to earth
  • NTC thermistor reads zero or open circuit on a multimeter
  • Element tests within normal range but machine still does not heat — control board may not be supplying power to the element
  • Burning smell from the rear of the machine when the machine attempts to heat
Common questions

Frequently asked questions

What is the difference between a slow wash and E19?
E19 is triggered when the temperature target is not reached within a fixed time window set by the control board — it is a confirmed heating system failure, not simply slow performance.
Can limescale alone cause E19?
Yes. Thick limescale deposits insulate the element from the water so it runs hot but transfers very little heat. Regular descaling every 3 months in hard water areas prevents this.
Is it safe to keep using the machine after E19?
It is not recommended. Laundry will not be hygienically cleaned at below-target temperatures, and continuing to run with a failing element puts strain on the control board.
Can I test the element and thermistor myself?
Yes — with a basic multimeter and the machine unplugged you can safely test both components by following the diagnostic steps above.

🎯 What is likely causing this fault?

🌡️
Heater 45%
📡
NTC sensor 30%
📡
PCB 15%
💡
Wiring 10%

⚠️ Estimates based on common faults — not a guaranteed diagnosis. Always verify before ordering parts.

🔩

Parts you may need

Enter your model number to filter results to your exact machine

Usually found on a label inside the door frame or on the back panel of the machine.

No model entered
Part Approx. UK Cost Find it
Heating Element £15 - £30
Heating Element £15 - £25

ℹ️ Prices are approximate. Always check the part number matches your model before ordering. Not sure of your model number? Find out how to locate it here.