8890 septum purge

Hi

You can do above test by going in Diagnostic to check that it's hardware issue or not...

Passes gas supply pressure and split vent restriction tests.  Fails all others.

Then before going to EPC, check for inlet consumables..

One more simple thing you can do that keep inlet and oven temp 40 and remove column from inlet and by hand hold the inlet with septa in oven and check pressure is developing or not...