Fault guide • Washing Machines
Washer not heating water
The washer runs but the water stays cold even on hot programmes, or the cycle drags on while it tries to reach temperature. You may notice stains no longer come out as they used to.
Symptoms you may notice
- Door glass stays cold on a hot wash
- Cycle takes much longer than usual
- A heating or temperature-sensor error code
Possible causes
- Faulty heating element
- Faulty temperature sensor
- Limescale on the element
Parts that may be involved
Heating elementTemperature sensor (NTC)
Error codes linked to this fault
Codes whose meaning points directly to this fault, taken from each brand's verified table. Meanings can vary by model.
| Brand | Code | Meaning |
|---|---|---|
| BOSCH | E19 / F19 | Heating time exceeded. |
| INDESIT | F03 | Temperature sensing fault. |
| INDESIT | F08 | Heater fault. |
| INDESIT | F15 | Heater control fault. |
| SIEMENS | E19 / F19 | Heating time exceeded. |
Sources are listed on each brand's page.
This is awareness information to help you understand and describe the problem, not a final diagnosis. We don't publish disassembly or repair steps; diagnosis requires a qualified technician to inspect the appliance.