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• If there is still a problem with the connection between the gateway and the AC module, it is necessary to check
the factors causing interference.
• First, connect the gateway directly to the AC module. This will eliminate any potential interference caused by other
devices; normal communication should be achieved and the AC modules should be detectable by the smart
phone app.
If the AC modules are still not detected on the app, there could be a communication problem between the smart
phone/tablet and the gateway. If you suspect that there is a problem with the gateway, please request for a
replacement unit.
It is recommended to install the gateway as illustrated in the figure below to prevent communication interferences.
• If normal communication between the gateway and the AC module is established, close all the circuit breakers
except for that of the gateway and the AC module. Disconnect the gateway from the AC module and re-install it
indoors.
• Verify that the connection between the gateway and AC module is maintained after the second installation. The
correct number of AC modules should now be visible from the app.
• Turn on one of the circuit breakers and wait 10 to 15 minutes. Scan for the AC modules through the app. If
successful, turn on another circuit breaker and scan for the AC modules. Repeat until all circuit breakers are back
on. If you encounter an error while scanning, the last circuit breaker is interfering with the communication.
3-1-6 Checking for Interferences to the Power Line Communication
00000
NL1L2
G
Trunk Cable Transition Cable
AC Junction Box
Equipment
Grounding
Conductor General AC
Cable
Sub Panel
Meter
Distribution Panel
120VAC
Communication
Gateway
Installation App
PV Rack AC Module