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johnnn40, Architect
Category: Small Appliance
Satisfied Customers: 2122
Experience:  25 plus years experience in the repair of all types of domestic and commercial appliances.
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I am working on a Miele 620 Coffee Machine that is giving me

Customer Question

Hi. I am working on a Miele 620 Coffee Machine that is giving me an 'Expel Air' error. This machine has an unknown history - it was bought at an estate sale. I have worked on many other machines but not Miele. I replaced the pump and cleaned the entire machine, descaled, the works. The hot water and steam come out at full force but then the expel air message pops up. I have googled and followed the multiple manuals and nothing has helped.
Submitted: 4 months ago.
Category: Small Appliance
Customer: replied 4 months ago.
I am giving the machine back to my friend tomorrow morning. I am hoping not to disappoint him!
Expert:  johnnn40 replied 4 months ago.

Check all water and steam connections for tightness, and make sure the steamed milk spigot is free of hardened residue.

Expert:  johnnn40 replied 4 months ago.

To expand on my previous response, there's a water or steam leak. Water leaks can usually be detected by using a bright flash light and looking for light reflections. Steam leaks are best found by using a cooled inspection mirror, and watching for the mirror to fog up from flowing steam.

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