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CPEC310 / EC155 IRGA / EC100 "gas" LED = red

TomT Jul 26, 2021 12:33 PM

Hi everyone,

I have repeatedly experienced a problem when powering down the CPEC310 and re-applying power after some time (minutes):

The "gas" LED in the EC100 box will remain "red" and not turn "green" after startup is completed (power LED is green, sonic LED turns green after approx. 80-90 sec, pump  starts).

All data/computed fluxes from the Sonic and IRGA will be "NAN" or unreasonable.

In the past, I shut the CPEC off again and waited. Sometimes restarting the next day would fix the problem.

This time this hasn´t worked. I tried multiple restarts with varying time in-between (minutes to 2 days), checked the SDM-cable, stopped/restarted the CR6-program.

Interestingly, the diagnostic file shows all flags up for the Sonic and only one flag (bad data) for the Irga.

Has anyone else had this problem? Any suggestions what could be the cause and how to fix it?


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