It's a simple fix, and its the cause of 80% of no electric backup heating complaint.
If electricity scares you, turn off power at the breakers, or at the timer box.
You only need a Phillips head screwdriver
Push the reddish button and pay close attention for a small click. If you get a click, it was tripped and should now be fixed.
Steve Here
At my Box account, I posted up the detailed user manual for a typical "Internet Bridge", in particular our new favorite the Trendnet 1300. That link is below.
Trendnet also has human tech support, 7 days a week, 1-866-845-3673 6AM to 4PM PST
We fixed one connection issue today by doing a "reset" on both bridges, by using a bent paperclip to press the recessed small button on the bottom of the unit for 1 second. 
Almost 30% of all PV systems are not communicating with the Enphase home base via the internet.
If you don't have internet connectivity, you have no idea what your system is doing. One guy lost probably $3000 because his EMU / Gateway was broke and his old M190 inverters were failing big time.
All the new IQ technology is much better, but it is still important to keep connected.
It then went all 3 green lights on both Bridges, indicating Internet present and strong communications.
Another good "trick" to know is how to "re-pair". There is a different outward button on the bottom, hold that in for 3 seconds....count them off. Now do the same on the other bridge (at your router). And that has to be done within 2 minutes of each other. Each unit should start flashing indicating "pairing mode".
Ensure that each bridge is plugged directly into the wall outlet AND NOT INTO A POWER STRIP. Computer areas are crowded, but you need to do whatever is necessary to plug the bridge directly into the wall. Just do it.
https://app.box.com/s/6rs2ekmvi33u4wj3b1xrdvh7k1lfx51p
Many of our customers have the Trendnet 1300.
If you have bad comms, no internet going to your Gateway, take a look at what model you have. You can download that model and see procedures for re-pairing, and for resetting, and try on both bridges.
If that still fails, you could call us on a service call to install a 1300, or you can buy it yourself on Amazon.
