Enpower smart switch installation and operation
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Manual Override for Enpower
Manual override is a feature of Enpower for Enphase Ensemble systems. The intent of this feature is to
allow the system to go to the grid-tied mode, when you are instructed to do so by Enphase customer
support. You may be instructed to use the function if there is a malfunction in the Enpower main relay or
other components of the system that prevents the automatic operation of the main relay in Enpower.
There are two possible connection states of an Ensemble system to the grid in Enpower:
connected
(grid-tied) or
disconnected
. Connection of the system to the grid is automatically controlled by Enpower.
In case of an Ensemble system failure to connect to the grid either automatically or via a command sent
by its control system, you can use the manual override function in Enpower to force a connection to the
grid.
Use the manual override function only when instructed by Enphase customer support.
NOTE
: Do not use the manual override function to arbitrarily disconnect the system from
the grid. If you want to disconnect from the grid manually, the mains breaker in the main
load panel or the main breaker in Enpower may be used.
Initiating Manual Override (Tied to Grid)
Refer to the wiring diagram in Step 5: Wire the Field Connections when performing this procedure. In the
event the Ensemble system malfunctions and causes the home to lose power without an actual grid
outage, you (after receiving instruction from Enphase customer support) can perform the manual override
by following these steps:
1. OPEN the following breakers in sequence:
a. Encharge breaker inside Enpower
b. Mains breaker powering the Enpower from the grid side. (This main breaker could be the
main breaker inside Enpower, installed in certain configurations,
or
the main breaker that
powers the Enpower from the grid side, which may be located outside the Enpower or inside
the main load center of the site.)
c. Auto transformer breaker inside Enpower
NOTE
: No need to open PV combiner breaker and load side breaker inside Enpower.
2. Turn OFF all Encharge units by turning OFF the DC switches on each Encharge base unit.
3. Wait for at least 60 seconds for all residual charge on the control boards to be discharged.
4. Remove the patch from the Manual Override section of the Enpower to make the small manual
override toggle visible.
5. Turn the toggle to the left to manually CLOSE the MID relay.
6. Turn ON the mains breaker. If load side breaker or PV combiner breaker in Enpower were opened
earlier, they can be closed now.
The system should now be in manual override mode and grid tied. The home will remain connected to
grid like a grid-tied PV only system.
