hopefully netgain gets back to you, could be a contactor issue? (or some other high power connection?), sounds like you have to clear it manually after the problem is fixed.
14 Pack went open circuit with system on. This error indicates that somewhere in the pack
there has been an open circuit while the controller
is “started”. This can be the main contactor or a
connection point within the pack.
15 Secondary microcontroller not
responding in required time.
Contact controller manufacturer if the problem persists after clearing the error code
edit: so the LEDs are showing you red then 1 blue then 5 yellow = active code 15. (no red) 1 blue 4 yellow historical code 14 if I'm reading it right.