I searched threads and could not find the answer.

How does one get the Whats Up display to indicate N2O is active passing fuel and N20 yet not doing so? I wish to see witness that I have it properly functioning within parameters I set yet not spraying.

I can place arming switch in off position. Would I still see the display N20 indicator lit?

I can leave bottole off but then I would get the fuel side spraying fuel which will show up in ext note as well as WB.

If the arming switch is off, then the N2O won't be activated. And the indicator on the WUD won't be on either.

Can remove the solenoid relay, pull the fuse for the relay, any number of things.

RBob.