Reply to Instant FX Delay - VCI 100 Arcade

Hey. I'm getting to grips with my new VCI-100 Arcade, in particular the FX functions. In the tutorials the "Echo" button activates a delay in FX bank 4 for the relevant deck but when I try this I keep getting "FLN-F" (Flanger flux). Anyone else seen this? Is it something that needs changing in the mapping? Thanks for your help on this.