I just installed a Max Transit Cat 18 unit (serial number 2937-DDA9-B143) on our boat and it was working great. We’re using one cellular LTE sim card.
I wanted to check how much power the unit was using, so I unplugged the unit from the AC socket, waited a few seconds, and then plugged it back in. The cellular light never came on and the Status light stayed at solid red. After waiting about 5 minutes, I unplugged the power cord from the unit itself, waited 30 seconds, and plugged it back in. The cellular light still would not come on and the Status light stayed solid red. I finally turned off the AC inverter (leaving everything plugged in) and then turned the AC inverter back on. The cellular light came on and the unit booted up normally.
Do you have any thoughts on why unplugging and plugging in the power cord could cause the unit to freeze out the cellular connection, causing normal boot up to fail?
I was able to get a 4G signal on my phone at the same time the Transit was showing no cellular reception.