DMEGC AC Module Installation Manual
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sensor reset if the cause of the failure is still present. If the condition persists, contact your installer.
Method 1:
Clear this Error Using Enlighten
A. Log in to Enlighten and access the system.
B. Click the Events tab. The next screen shows a current DC Resistance Low - Power Off condition for the
system.
C. Click DC Resistance Low - Power Off.
D. Where n is the number of affected devices, click n devices (show details).
E. Click the serial number of the affected microinverter.
F. Click Reset DC Resistance Low - Power Off Sensor.
The system displays, A DC Resistance Low- Power Off reset task was issued on [date and time] for this
microinverter and is still pending.
Method 2:
Use Installer Toolkit to Clear the Condition
Follow the instructions in the Enphase Envoy-S Installation and Operation Manual at enphase.com/support to
clear this condition.
5.2 Troubleshoot an Inoperable Microinverter
To troubleshoot an inoperable microinverter, follow the steps in the order shown.
WARNING:
Risk of electric shock. Always de-energize the AC branch circuit before servicing.
Never disconnect the DC connectors under load.
WARNING:
The Enphase Microinverters are powered by DC power from the PV modules. Make
sure you disconnect the DC connections and reconnect DC power and then watch for the solid green
about six seconds after connection to DC power.
A. Make sure AC breakers and disconnects are closed.
B. Check the connection to the utility grid and verify that the utility voltage is within allowable ranges.
C. Verify that AC line voltages at all solar power circuit breakers at the load center and subpanels are within the
ranges shown in the following table.
D. Verify that AC line voltage at the junction box for each AC branch circuit is within ranges .
E. Using an Enphase disconnect tool, disconnect the AC cable for the microinverter in question from the
Enphase Q Cable.
F. Verify that utility power is present at the microinverter by measuring line to line and line to ground at the
Enphase Q Cable connector.
