ECD signal stuck at 844883.8

Hi

Can you confirm, there is only detector or two detector...

It is a dual ECD. I'm guessing it's some kind of electronic problem because the number isn't fluctuating at all, it's just sitting at 844883.8. It was at 113 Hz last time I was running it around 2 weeks ago.

The only time my ECD was at the max was when the nitrogen flow was zero. Check your flow coming out the vent tube to make sure you have flow at about what it is set at. We did have the flow controller go bad once where it wasn't opening to what it should be.  You will probably need a service call if the flow is ok. Also no it should not be toast after a year.

Yeah, I haven’t hooked it up to a flow meter, but I was programming different flows and the instrument was responding to the set points. Even at saturation there should be some variance in the signal, it didn’t change at all for 4 hours. I’m gonna call Agilent on Monday. 

Pulled the electronics cover and found a loose connection that goes to the front electrometer. The black ribbon cable on top was only locked in on one side, turned the instrument on and am still getting the same reading. Is there a battery on this board somewhere that's still holding onto settings from when that cable was still loose?

Fixed, the other end of the electrometer ribbon was also barely plugged in. Took the top cover off and plugged the connector in all the way. Signal is back to normal.