Multiple Faults Example; Ac Under Voltage Fault - Advanced Energy AE 75TX Installation And Operation Manual

Advanced Energy® AE ?STX and AE 1 OOTX Inverters
MULTIPLE FAUL TS EXAMPLE
In the event the inverter detects multiple faults at the same time, the numerical values
of the fault codes are combined. The following example displays and AC voltage
high fault and a DC voltage low fault.
Fault 1000 0420 0000
Power Low
DC Under Volt
Figure 8-3. Multiple faults screen
The following
Fault
information is displayed on the screen. The 1 in the first code,
10 0 0, indicates there is a voltage fault value in the second block of four digits. The
second block of digits contains the combined fault codes for each fault shown below.
The combined fault codes in the second block is
O
4 2
O.
• AC Over Volt
fault code is 1000 0400
• DC Under Volt
fault code is 1000 0020
This fault may occur at night when the PV array voltage is low and the utility volage
is above the recommended limits.
AC UNDER VOLTAGE FAULT
To Identify an AC Under Voltage Fault
If the inverter displays an
AC Under Voltage
fault and all the voltages going
into the inverter are within the tolerances provided in the specifications, continue
with the following troubleshooting tips.
1. Check the main branch circuit breaker.
a. If the breaker is not nipped:
Check the small fuses located on the AC sub panel (there are six in two sets
of three). If one or more of these fuses have opened, replace them with like
pai1s ( 600 V AC, 10 A or 20 A as required)
2.
If any
of the fuses are open, visually inspect the wiring. Look for the following:
a. Frayed wires or carbon mai·ks indicating a sho11
b. Burned tt·aces on the PCBs
If any of these conditions ai·e present, DO NOT START THE INVERTER.
Contact AE Solar Energy Technical Support for replacement parts or service.
570-1001793-058 Troubleshooting and Solar Energy Technical Support 8-5