<p>Two lights are on in your photo and it's not clear which one you're talking about. I'll address both.</p>
<p>The silver buttons above the lights are used to select brewing mode. The light shown in the picture is for &quot;hot water or steam&quot;. This is as opposed to &quot;single brew / single shot&quot; and &quot;double brew / double shot&quot;.</p>
<p>The other light, red, round, and chrome bordered, indicates that descaling is in progress if solid and that the machine has detected limescale buildup and needs descaling if flashing.</p>
<p>Hope this helps.</p>

CC BY-SA 4.0
2024-01-11T08:07:37.913Z
Thank you
Your answer helped me a lot.
efi yak
CC BY-SA 4.0
2024-10-09T20:44:26.637Z
@efiyak If this answer helped, you can indicate that by clicking the Accept mark next to it.
hardmath
CC BY-SA 4.0
2024-01-10T05:51:08.587Z
2024-01-10T05:51:08.587Z
R Mac
<p>What's wrong with the coffee machine?
What does the light bulb indicate?</p>
<p><a href="https://i.sstatic.net/20cEm.jpg" rel="nofollow noreferrer"><img src="https://i.sstatic.net/20cEm.jpg" alt="enter image description here" /></a></p>

CC BY-SA 4.0
2023-12-31T16:43:46.347Z
It would probably help if you could add what the machine's type is (maybe it says on the back or bottom of the machine). That way someone might find the user manual which should explain what the indicator is for.
JJJ
<coffee-machines><troubleshooting>
What's wrong with the coffee machine? What does the light bulb indicate?
efi yak
# What's wrong with the coffee machine? What does the light bulb indicate?

(Asked by: username_0 on 2023-12-31)

What's wrong with the coffee machine?
What does the light bulb indicate?

[![enter image description here](https://i.sstatic.net/20cEm.jpg)](https://i.sstatic.net/20cEm.jpg)

**Tags:** coffee-machines, troubleshooting

> **Comments:**
> **username_1**: It would probably help if you could add what the machine's type is (maybe it says on the back or bottom of the machine). That way someone might find the user manual which should explain what the indicator is for.  

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## 1 answers

### Answer by username_2 on 2024-01-10. Score: 1

Two lights are on in your photo and it's not clear which one you're talking about. I'll address both.

The silver buttons above the lights are used to select brewing mode. The light shown in the picture is for "hot water or steam". This is as opposed to "single brew / single shot" and "double brew / double shot".

The other light, red, round, and chrome bordered, indicates that descaling is in progress if solid and that the machine has detected limescale buildup and needs descaling if flashing.

Hope this helps.

> **Comments:**
> **username_0**: Thank you Your answer helped me a lot.  
> **username_3**: @efiyak If this answer helped, you can indicate that by clicking the Accept mark next to it.  

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