Possible fault areas
- Dirty milk system
- Nozzle assembled incorrectly
- Milk too warm
- Leaking milk hose
The order does not confirm a failed part. Different causes can create the same symptom.
Coffee machine not frothing milk
Milk stays liquid, foam is weak or the system draws air.
Safety rule: stop when there is smoke, sparking, a burning smell, electric-shock signs, an active leak, cracked hob glass or suspected gas. Disconnect only when it is safe to do so.
Safe checks
- Disassemble and clean parts as instructed
- Check seals and hose seating
- Use fresh chilled milk
DIY diagnostic boundary: Do not use sharp tools to clear a nozzle while it is attached.
Step-by-step diagnosis
1. Record the conditions
Check whether the symptom happens every time, only in a certain programme or after some running time.
2. Record information
Save the error code, full model and all messages before resetting.
3. Perform user checks
Use only the steps above and tasks allowed by the manual. Do not remove the cabinet.
4. Decide the next step
If the symptom returns, stop the appliance and prepare a technician report.
Run diagnosis
Check safety stops and save the result.
Technician report
Organise model, code and conditions.
All coffee machine symptoms
Open the appliance page.
Frequently asked questions
Can I continue using the appliance?
Only when there are no hazard signs, the manual allows it and the symptom is not worsening. Stop whenever uncertain.
Does this symptom identify one specific part?
No. Without measurements and inspection, several causes can create the same symptom. UsterkaTo shows areas to investigate.
What should I tell the technician?
Full model, code, stage of occurrence, repeatability, safe steps and any smoke, smell, leak or breaker information.