Status Led Indications And Error Reporting; Led Operation; Dc Resistance Low - Power Off Condition - enphase IQ7 Installation And Operation Manual

Status LED indications and error reporting

The following section describes LED indications.

LED operation

LED colour
Flashing green
Flashing orange
Flashing red
Solid red
The status LED on each microinverter lights green about six seconds after DC power is applied. It remains lit
solid for two minutes, followed by six green blinks. After that, red blinks indicate that no grid is present if the
system is not yet energized.
Any short red blinks after DC power are first applied to the microinverter indicate a failure during
microinverter startup.
DC Resistance Low – Power Off condition
For all IQ Series models, a solid red status LED when DC power has been cycled indicates the microinverter
has detected a DC Resistance Low - Power Off event. The LED will remain red, and the fault will continue to
be reported by the IQ
Gateway
An insulation resistance (IR) sensor in the microinverter measures the resistance between the positive and
negative PV inputs to the ground. If either resistance drops below a threshold, the microinverter stops power
production and raises this condition. This may indicate defective module insulation, defective wiring or
connectors, moisture ingress, or a similar problem. Although the cause may be temporary, this microinverter
condition persists until the sensor is manually reset.
An IQ Gateway is required to clear this condition. The condition clears on operator command unless its
cause is still present.
If a microinverter registers a "DC Resistance Low - Power Off" condition, you can attempt to clear this
condition. If the condition does not clear after you perform the following procedure, contact customer
support at https:/ /enphase.com/en-us/support/global-contact.
There are two ways to send a clear message to the microinverter. Note that the condition will not clear after
the sensor reset if the cause of the failure is still present. If the condition persists, contact your installer or
Enphase for possible replacement.
Method 1: Clear this error using Enphase App
• Log in to Enphase Installer App and access the system.
• Click the "Events" tab. The next screen shows a current "DC Resistance Low - Power Off" condition
for the system.
• Click "DC Resistance Low - Power Off".
•
Where "n" is the number of affected devices, click "n devices" (show details).
22
IQ7+/IQ7X/IQ7A Microinverters Installation and Operation Manual
Indicates
Normal operation. AC grid function is normal there is communication with the IQ
Gateway.
The AC grid is normal but there is no communication with the IQ Gateway.
The AC grid is either not present or not within specification.
There is an active "DC Resistance Low - Power Off" condition. To reset, see
Resistance Low – Power Off
until the error has been cleared.
© 2023 Enphase Energy Inc. All rights reserved.
condition.
DC
August 2023
USM-00003-1.0