Operation
©
2017 Sensata Technologies
Page 73
• Internal Charger (Int Chgr)
– This fault message displays when the FET bridge shuts down
because the charger circuit is trying to provide maximum current, but is not detecting any current
or voltage rise to the battery bank.
Figure 5-51, Internal Charger Fault
FAULT
PWR
CHG
INV
Internal Charger
Settings/Info...
Internal Charger
appears on the LCD and the FAULT
(red) LED is on. The PWR (green), CHG (green), and
INV (green) LEDs are off.
Internal NTC
appears on the LCD and the FAULT
(red) LED is on. The PWR (green), CHG (green), and
INV (green) LEDs are off.
FAULT
PWR
CHG
INV
Internal NTC
Settings/Info...
Figure 5-52, Internal NTC Fault
• Internal
NTC
(
Int NTC)
– This fault displays when the internal NTC (Negative Temperature
Coef
fi
cient) sensor suddenly senses a very large but unexpected temperature change.
Internal Relay
appears on the LCD and the FAULT
(red) LED is on. The PWR (green), CHG (green), and
INV (green) LEDs are off.
FAULT
PWR
CHG
INV
Internal Relay
Settings/Info...
• Internal Relay (IntRelay)
– This fault displays when the internal AC transfer relay is not
closed while charging.
Figure 5-53, Internal Relay Fault
• Internal Bridge (Int Brdg)
– This fault message displays when the FET bridge shuts down
after the inverter has been inverting—the inverter output circuit can no longer detect any AC
output voltage or current.
Internal Bridge
appears on the LCD and the FAULT
(red) LED is on. The PWR (green), CHG (green), and
INV (green) LEDs are off.
FAULT
PWR
CHG
INV
Internal Bridge
Settings/Info...
5.3.4.3
Internal Fault Messages
The inverter continually monitors several internal components. If a condition inside the inverter
occurs that does not allow proper operation, the inverter shuts down to protect itself. To clear
these “internal” faults, the inverter requires an inverter reset.
Remedy:
Perform an inverter reset (see Section 6.2). After resetting the inverter, press
the ON/OFF INVERTER button to turn the inverter on and verify the fault has cleared. If
the internal fault remains, the inverter requires repair at a Sensata Authorized Service
Center.
Figure 5-50, Internal Bridge Fault
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