5.3.3.2 Stacking Fault Messages; Figure 5-32, Stackclock Fault; Figure 5-33, Stack Mode Fault; Figure 5-34, Stackphase Fault - Magnum Energy ME-RC Owner's Manual

5.3.3.2 Stacking Fault Messages

A fault condition may occur when two inverters are stacked in series—using
the stacking interface—that is not possible on a single inverter installation.
Refer to the following fault messages to help troubleshoot the inverters.
PWR
FAULT
StackClock Fault
CHG Settings/Info..
INV

Figure 5-32, StackClock Fault

• StackClock Fault – There is a stacker cable problem; or, one inverter
is losing synchronization with the other inverter.
Remedy: Ensure you are using a Magnum Stacking Cable (this is
not a telephone/data cable, this is a custom made cable). Inspect
the stacker cable and reconnect at both ends (listen and make sure
you hear an audible "click" from the connectors at both inverters).
Info: This fault has been known to occur when a Magnum Energy
accessory is plugged into the inverter's Stack port, but the instal-
lation is not using multiple inverters in a stacked confi guration. If
this occurs, perform an inverter reset (see Section 6.2).
PWR
FAULT
Stack Mode Fault
CHG Settings/Info..
INV

Figure 5-33, Stack Mode Fault

• Stack Mode Fault – This unit has detected a problem with the "other"
stacked inverter. Check that unit for a fault condition.
Remedy: This fault will automatically clear when the fault with the
other inverter is corrected.
PWR
FAULT
StackPhase Fault
CHG Settings/Info..
INV

Figure 5-34, StackPhase Fault

• StackPhase Fault – 1. The AC input wiring is incorrect; 2. One phase
was lost from the AC input source; 3. One of the inverter's internal transfer
relays is bad; or, 4. The inverter's AC input circuit breaker may be open.
Remedy: If this fault doesn't clear after checking these four recom-
mendations, perform an inverter reset (see Section 6.2).
©2013 Magnum Energy, Inc.
5.0 Operation
StackClock Fault appears on the
LCD. The FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
Stack Mode Fault appears on the
LCD. The FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
StackPhase Fault appears on the
LCD. The FAULT (red) LED is on. The
PWR (green), CHG (green), and INV
(green) LEDs are off.
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