Miele Dishwasher F24 Error Code: Heating Fault

Quick Answer

Miele F24 is a heating fault - the water in the wash cabinet did not reach the target temperature. The two most common causes are a failed NTC temperature sensor (reads incorrectly, causing the control board to abort heating) and a burned-out heating element. Test the NTC thermistor first with a multimeter - at room temperature it should read approximately 10,000 to 15,000 ohms.

MieleDishwasherSeverity: moderateDifficulty: intermediate82% DIY Success

Time to Fix

20–90 min

Difficulty

intermediate

Parts Cost

$14 – $165

Tools Needed

Multimeter, Phillips screwdriver

What Does the F24 Code Mean?

Miele dishwashers heat water at multiple points in the cycle. The NTC sensor continuously monitors water temperature and reports to the control unit. If the NTC reports a temperature that is impossibly low (sensor failure) or the heating element fails to raise temperature within the time limit, F24 is thrown. The heating element in Miele dishwashers is typically a flow-through heater integrated into the circulation pump housing - it is replaced as a combined pump-heater unit on many G series models.

Most Likely Causes

Based on aggregated repair data, here is the probability breakdown for this error code:

Failed NTC temperature sensor (most common)40%

Burned-out heating element or flow-through heater24%

Control board relay failure (rare)22%

Scale buildup on heating element reducing efficiency14%

Symptoms You May Notice

F24 at end of cycle, dishes are warm but not hot
Cycle takes longer than normal before F24 appears
Dishes come out with water residue (insufficient heat for proper drying)

Can you reset a Miele dishwasher to clear the F24 code?

After replacing the NTC or heating element, cancel and restart the cycle. F24 clears when water successfully reaches target temperature.

Tools Required for Diagnosis

MultimeterPhillips screwdriverTorx T20 bit

Diagnostic Checklist

Follow these steps in order. We start with the easiest external fixes before opening up the machine.

Test the NTC temperature sensor

Disconnect power. Locate the NTC sensor - on most G series it is a small probe mounted on the sump or flow heater housing, with a 2-wire connector. Disconnect the connector. Set multimeter to resistance. At room temperature (65-75°F), a functional Miele NTC reads 10,000 to 15,000 ohms. A reading of 0 or OL indicates failure. NTC sensors cost $15-25.

Test the heating element

ComponentComponent Under Test

Expected Range10000–15000 ohms

ConditionIf Open (OL) or infinite, replace component.

Replacement Parts

If your diagnostic testing proves the component has failed, you will need a replacement. We recommend OEM parts over aftermarket for water-handling components.

Part Name	OEM Number	Estimated Price
NTC Temperature Sensor5570530 · $14–$28	5570530	$14 – $28
Flow Heater / Pump-Heater Assembly10760540 · $90–$165	10760540	$90 – $165

Verify part fitment for your Miele model

Repair vs. Replace Calculator

Appliance Age (Years)7 Yrs

Labor Approach

Our Verdict

REPAIR

Estimated Cost: $90 (Parts) vs $1650 (New Machine)

Frequently Asked Questions

What does F24 mean on a Miele dishwasher?

F24 is the heating fault - the water in the wash cabinet did not reach the programmed temperature within the cycle's time limit. The NTC temperature sensor and the heating element are the two most likely causes. Test the NTC thermistor first with a multimeter, since it is a cheaper part to replace.

Can limescale cause F24 on a Miele dishwasher?

Yes. Heavy limescale coating on the heating element acts as an insulator, reducing heat transfer efficiency. The element may still have continuity but cannot heat water fast enough to meet the cycle's temperature target before the timeout expires. Descaling with Miele Descaler or a citric acid solution can restore performance if the element is otherwise intact.

Related Miele Dishwasher Error Codes

Code: HUBMiele Dishwasher Error Codes: Full List

Same Fix Works on These Brands

Miele shares the same hardware platform with these brands. The diagnosis and repair steps are identical.

Miele dishwasherMiele Dishwasher Error Codes: Complete List for G Series Models Miele dishwasherMiele Dishwasher F11 Drain Error: Clean the Filter First (Most Fix in 5 Minutes)Miele dishwasherMiele Dishwasher F70 Waterproof System Error: How to Drain the Base and Fix the Leak Miele dishwasherMiele Dishwasher F14 Intake Error: Water Not Entering the Machine Miele dishwasherMiele Dishwasher F78 Error Code: Circulation Pump Fault Miele dishwasherMiele Dishwasher F13 Error Code: Salt System Fault

Models Known to Experience F24 Errors

This repair applies to most Miele dishwashers with this error code. Common model numbers include:

G 4228 SCVi, G 5265 SCVi, G 6360 SCVi, G 7160 SCVi

Last verified for technical accuracy on March 14, 2026