Q U I C K
I N S T A L L
G U I D E
Replacing the E3 PCBA from the IQ System
To replace IQ System Controller, read and follow all warnings and instructions in this guide. Safety warnings are listed on the back of this guide. These instruc-
tions are not meant to be a complete explanation of how to design and install an energy storage system.
All installations must comply with national and local electrical codes and standards. Only qualified electricians shall install, troubleshoot, or replace the IQ Sys
-
tem Controller.
All service or maintenance operations on the IQ System Controller unit should be performed only by trained and qualified personnel who understands and fol
-
lows the required safety codes and use adequate Personal Protective Equipment (PPE).
*
WARNING!
The following procedure is to be performed only when the grid is functional and the Enphase system has not formed a microgrid.
*
WARNING!
Failure to follow this warning could cause personal injury or death. Before performing service or maintenance operations on unit, always turn off
main power switch to unit and install lockout tag. Unit may have more than one power switch.
© 2021 Enphase Energy. All rights reserved. Enphase, the Enphase logo, IQ System Controller, IQ Battery, IQ Gateway, IQ combiner, IQ microinverter, Enphase App
and other trademarks or service names are the trademarks of Enphase Energy, Inc. Data subject to change. Rev01-10-23-2021
Tools and parts to be used:
Open the IQ System Controller and remove the Dead-
front
A ) Open the three latches that lock the enclosure door. To release the
latch, pull the latch handle forward and then to the right. With all the
latches opened, swing open the enclosure door.
B ) Use a Phillips Size #2 screw driver to loosen the six screws along the
periphery of the deadfront. Support the deadfront to keep it from falling
while performing the next step.
C ) While supporting the deadfront, use a blade screwdriver to disconnect
the deadfront ground wire from the grounding bar before removing the
deadfront.
D ) Use the two tabs on the front to assist handling the deadfront during
dismantling.
E ) Remove deadfront from the IQ System Controller unit and place it aside
safely.
2
Open the Controller PCBA Cover
A ) Locate the Zigbee antenna cable zip tied to right side of the E3 cover
(metal cover) as shown in
Figure 1
. Using the small wire cutter cut the
zip-tie tied between E3 Cover and Zigbee antenna cable.
NOTE:
1. Mark the zip tie location on antenna cable using a sharpie for easy
locating while reinstalling zip-tie.
2. Pay attention to only cut zip tie, do not cut or damage the antenna
cable or the EMI sheet wrapped around the cable.
3
B ) Unscrew the 4 screws on top of E3 cover. Do not remove the ground
(green) cable (indicated in
Figure 2a
) connected on the left side of E3
cover. Remove and secure the E3 cover on left side empty space as
shown in
Figure 2b
.
NOTE:
Do not disconnect ground wire connection to E3 cover.
S.No
Component
Qty
Source of part
1
E3 replacement PCB
1
Provided in kit
2
Zip tie
2
Provided in kit
3
Serial number label- for E3
1
Provided in kit
4
Serial number label- for IQ System
Controller
1
Provided in kit
5
Spare Zigbee antenna assembly
1
Provided in kit
6
Philips Screwdriver (Size #2)
1
Arranged by installer
7
Flat head Screwdriver (any size)
1
Arranged by installer
8
Multimeter
1
Arranged by installer
9
Sharpie
1
Arranged by installer
10
Wire cutter
2
Arranged by installer
11
Step Ladder
1
Arranged by installer
12
ESD Protective hand gloves
1 pair
Arranged by installer
PROCEDURE
Figure 2a: E3 cover with ground
wire indicated
Figure 2b: E3 cover after being
removed
Figure 1:
Zigbee Antenna tied to the side of the E3 cover
De-energizing the IQ System Controller
A ) Turn DC switches in IQ Batteries to OFF. ( For instruction on opening IQ
Battery cover please refer to the following document
com/sites/default/files/2021-04/IQ Battery3-10-QIG-EN-US.pdf
).
B ) Open IQ Battery breaker in IQ System Controller.
C ) Open PV breaker in IQ System Controller.
D ) Open the mains breaker.
E ) Disconnect the grid source power supply (breaker in main panel).
F ) Open generator breaker.
G ) Use multi meter to measure AC voltage on all the following terminals –
PV, IQ Battery, Grid , Load and Generator. It is safe to work on IQ System
Controller only when no voltage is detected on any of these terminals
and you have ensured that all IQ Battery units have DC powered off.
1
