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Canon 600exrt not firing

write2zulfi
Apprentice
The led indicates red only. Not green. Hence not firing. Also an exclamation symbol appears on display along with ettl
3 REPLIES 3

rs-eos
Whiz

What mode are you using? light-of-sight or radio signals?

 

How are you controlling that speedlite? Via a slave flash, or ST-E3-RT radio controller?

 

Once we have more details, we can then help to troubleshoot.

--
Ricky

EOS 5D IV, EF 50mm f/1.2L, EF 135mm f/2L, 600EX-RT (x6), ST-E3-RT
EOS C70, RF 24-70 f/2.8L IS, EF-EOS R 0.71x


@write2zulfi wrote:
The led indicates red only. Not green. Hence not firing. Also an exclamation symbol appears on display along with ettl

I don't know why it's not firing, but I think you're misinterpreting the LED. Check your manual. IIRC, red means that the unit has reached its full firing power, while green means that it hasn't. (Yeah, I know that's counterintuitive, but it is what it is.)

Bob
Philadelphia, Pennsylvania USA

There are two LED's on the back. One is the standard flash ready and the other is the Link Status for RF

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