In components.xml
change core:init
to
<core:init debug="true" jndi-pattern="java:app/**your-ejb-name**/#{ejbName}" />
or use @JndiPattern
annotation in your beans.
@JndiName("java/jboss:phoenix-ejb/**yourClassName**")
In your case it would be
@JndiName("java/jboss:phoenix-ejb/**AccountService**")