HI @Markbobson !
Hope you are doing well !
Have you made sure that the wired is good ?
If you have more than 1 AP please swap cables on the ICX 7150-C12P to discard any port issue related.
Are other devices powering up from the ICX 7150-C12P to make sure that is not a PoE issues on the ICX 7150-C12P.
If you have access to the ICX 7150-C12p switch please share with us the following information:
Show inline power detail
show inline power