enphase IQ Combiner 5C Quick Install Guide

CAUSE RESOLUTION
If all the non-productive microinverters are
on the same branch, it could be an issue
with the junction box of a PV branch
Check the breaker and wiring starting at the junction box for the aected branch
If only one or few scattered microinverters are not
producing power, it could be due to improper wiring
Verify that the AC connectors are fully seated in the Engage Cable
connectors. Also, check that each module is meeting the required start-
up voltage for the microinverter (usually 22 V). A PV module that is failing or
that is undersized may not generate enough power for AC conversion
Grid uctuations or mains wiring issue
Verify that there is proper input voltage and frequency from the grid.
Next, check the breaker and wiring starting at the load center
CAUSE RESOLUTION
The IQGateway may be having diculty
communicating over the power lines
1. Check the Enphase Installer App mobile app to see
which microinverters are not communicating
2. Check that the circuit breaker(s) for the PV array are in the ON position
and that the PV modules are connected to the microinverters
3. Verify the PV module DC voltage is within the allowable range for the microinverter
PV modules may not be generating power
Check that the circuit breaker(s) for the PV array are in the ON position
and that the PV modules are connected to the microinverters
IQGateway may not be in the correct position
If the signal strength is poor, for a grid-tied system, power the IQCombiner from
a circuit close to the solar production circuit and close to the AC mains
Power production LED is red or o
NOTE: Device communications LED may remain red or o in low light conditions. In such a scenario, wait for conditions to improve and
then try again.
If the LED is still red or o, contact Enphase Support.
AP mode LED is red or o
If the AP mode button is pressed, and the IQGateway’s network
does not show under the list of available networks, then follow these
steps:
1. Press the button
2. Power cycle the IQGateway
All LEDs are red or o
CAUSE RESOLUTION
The IQGateway is not powered or is incorrectly powered
Ensure IQGateway is properly powered from its breaker (in the IQCombiner for grid-
tied systems or the quad breaker in the IQSystemController for grid-agnostic systems
Phases may not be balanced Measure the conductors and neutral line to verify that the phases are balanced
Troubleshooting
Device Communications LED is red or o
IQ Combiner 5/5C Quick Install Guide 52

enphase IQ Combiner 5C Specifications

General

Brand	enphase
Model	IQ Combiner 5C
Category	Inverter
Language	English