Update: gateway firmware update (via CumminsECAGS) on April 13th, 2023 appears to have addressed the issue of the auto start changing from a/c activation based on temperature to battery monitoring.
In a test run today, I ran the AGS and air conditioner long enough on a hot day for the generator to start. Cool the van by running the a/c, then stop when target temperature was reached, and start again when the temperature rose.
The rest of my feedback on CumminsECAGS continues to stand. Cummins took a good step forward, but there’s more to do.
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The auto-start module is sold as a way to keep batteries charged, interior of the RV at a safe temperature, or both. The software in the gateway and that in CumminsECAGS are unreliable. After one cycle of temperature-activation, the gateway then thinks it is supposed to only monitor batteries (even if set to NOT monitor battery voltage) and the RV interior is allowed to overheat. CumminsECAGS constantly asks for passwords and reauthorization rather than simply reconnecting to the generator. It gets tiresome and could so easily be fixed. There is no way to reset the “hours to service” after doing an oil change on the generator, making the maintenance interval reminder completely useless. It’s not just CumminsECAGS that’s flawed, it’s the firmware in the gateway.