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2017 Sensata Technologies
Maintenance and Troubleshooting
5.7 Resetting the PT-100 Charge Controller
Certain conditions—such as clearing an internal fault—require that the PT-100 be reset. Most times
a software reset (also known as a soft reset) is suf
fi
cient, otherwise a power reset is (also known
as a hard reset) is required.
5.7.1
Performing a Software Reset (AKA Soft Reset)
To perform a software reset (also known as a soft reset):
1. Remove all PV power to the PT controller—normally done by opening the PV input breaker.
2. Ensure the PT controller is connected to battery power by verifying that any LED indicator on
the PT controller’s front display is on.
3. Press and hold the RESET pushbutton (see Figure 5-3) for ten (10) seconds until the PT
controller begins performing the diagnostic power-up test routine (see Section 2.11.2).
4. Once the power-up test is completed, if the PT controller appears to be operating normally,
apply PV power (close the PV input breaker).
5. If the controller continues to operate normally after applying PV power, resume operation.
If any of the steps fail or the charge controller continues to show an internal fault, perform a
power reset using the procedure below.
5.7.2
Performing a Power Reset (AKA Hard Reset)
To perform a power reset (also known as a hard reset):
1. Remove all power (PV and battery) to the charge controller, this is normally done by opening
the PV input and battery input disconnects.
2. Remove any cable that is plugged into any accessory port (i.e., BTS, REMOTE).
3. Verify the charge controller is disconnected from all power by pressing both pushbuttons, and
ensure all LEDs and the display are off.
4. After the charge controller has been disconnected from all power for 5 minutes, connect
only battery power to the charge controller and verify the controller performs the diagnostic
power-up test routine (see Section 2.11.2).
5. Once the power-up test is completed, if the PT controller appears to be operating normally,
then apply PV power (close the PV input breaker).
6. If the controller continues to operate normally after applying PV power, resume operation.
If any of the steps fail or the charge controller continues to show a fault, the charge controller will
require repair at an Authorized Service Center (ASC).
Figure 5-3, PT Controller Reset
3-Character
Display shows
an internal
fault code and
all LED
indicators are
off
FAULT
LED Indicator
RESET
Pushbutton