Agilent 6890 Faulty Pneumatic Board

Joao,

The pneumatics board, under the EPC modules, is bad and needs to be replaced.

G1575-69010   if you have a 6890A or 6890plus.

G1575-60015   if you have a 6890N

A trained service engineer should replace the board.

The best way is to replace pneumatics board.

Before replacement, I recommend that take the dust from the pneumatics board. It's worth a try

You may alternatively have a faulty EPC board, which is separate from the pneumatics board, but can give the same error.