When you did your purge, did you also purge the overflow line that is the farthest to the right after the ink line purge valves? I think its a white valve. If ink overflows and fills that line, it backs up into the vacuum lines and inhibits the check valves from doing their job properly.
, yes it was full of magenta it's all been cleaned out, lines are all cleared. ink had gotten into vacuum lines and the vacuum check valve attached to vacuum canister was not working, replaced check valve. now this is happening. is it possible the onboard pressure sensor is damaged?
[0:01:19.991] Initializing Front Panel
[0:01:20.017] Front Panel beep (1) times
[0:01:23.117] TABLE put in Config with Roll2Roll
[0:01:33.667] config: Carriage Board configuration word: 0x00000030
[0:01:33.667] config: carriage 8-head
[0:01:33.667] config: carriage 14pl (MCYK)
[0:01:33.667] config: carriage ink-02
[0:01:38.095] Front Panel beep (2) times
[0:01:39.063] ink pouch EMPTY alert turned off
[0:01:39.063] ink pouch EMPTY alert turned off
[0:01:39.063] ink pouch EMPTY alert turned off
[0:01:39.063] ink pouch EMPTY alert turned off
[0:01:39.063] Alert user to clean print heads!
[0:01:39.074] Enable spit
[0:01:39.079] Current ink vacuum pressure is (0.01 psi)
[0:01:39.079] Setting ink vacuum pressure to (0.34 psi)...
[0:02:39.680] Error: failed to set ink vacuum, err=728
[0:02:39.680] Error: potentially blocked ink vacuum filter, err=728
[0:02:39.680] Error: ink vacuum pressure failure, err=728
[0:02:39.680] Error: pressure not stable at Carriage Board
[0:02:39.685] Current ink vacuum pressure is 0.49 psi
[0:02:39.685]
[0:02:39.685] Ink System is being set to safe condition.