Installation Manual

Page 122
© 2014 Magnum Energy, Inc.
Using a PT Controller: Troubleshooting
10.3 PT Controller Troubleshooting using the ME-ARC
This section assists in using your remote control to identify a fault, and to resolve an abnormal
operational condition detected within your AGS system.
10.3.1 PT Controller Fault Message Screens
When a PT fault is detected, the ME-ARC’s red FAULT LED lights and the fault status is displayed
on the LCD screen (see Figure 10-9 example). Use the remote’s LCD screen and the information
in this section to identify and correct the issue.
Blinking (red)
FAULT LED
** Alternates with
inverter/charger
status (scrolling)
PT Status**
Inverter/Charger
Setting/Info
FAULT
PWR
CHG
INV
High Batt In - PT
Settings/Info..
Figure 10-9, PT Controller Fault Message (Example)
10.3.2 Resolving PT Faults using the ME-ARC
For the listed faults below, refer to their respective remedy.
• ARC Fault-PT – A series ARC fault has been detected on the PV input side of the PT. The PT
turned off to reduce current fl ow in an attempt to extinguish the DC arc in the PV system.
Remedy: A breakdown in the wiring or in an electrical connector has the potential for
producing a DC ARC fault. Look for any loose or intermittent connection, or a defective
component (i.e., connectors, cables, PV controllers, or junction box) in the PV circuit.
Note: When the cause of the ARC fault has been corrected, manually clear this fault by
pressing the PT controller’s RESET pushbutton for one second.
Info: The PT controller contains an ARC fault test button to verify the operation of the
ARC fault detection/indication circuit. See the PT owner’s manual for more information
on the ARC fault test button.
Info: The ARC fault circuit is normally enabled. However, if an external system ARC
fault detection/indicator is installed, the ARC fault detection circuit inside the PT can be
disabled. See the PT owner’s manual for information on disabling the ARC fault circuit.
• BTS Open-PT – The BTS has opened or is no longer connected. This fault causes the BTS to
show 152°C (305°F) on the TECH: 01 Temperatures/PT BTS display. With a defective or dis-
connected BTS, there is no temperature compensation applied to the battery charging voltage.
Remedy: Normally when a BTS is connected, it communicates temperature information
to the PT controller. This fault occurs when the PT controller is no longer receiving this
information, which can occur if the BTS cable becomes disconnected or damaged. See if
the BTS cable has fallen out of the BTS port on the PT controller. If still connected, check
for any damage to the BTS cable.
Note: The fault will automatically clear once a good BTS is reconnected. If the BTS is
determined to be faulty, this fault can be cleared manually by removing the faulty BTS
and pressing the PT controller’s RESET pushbutton for one second.
• BTS Shorted-PT – A shorted BTS has been detected. This fault causes the BTS temperature
to show 151°C (304°F) on the TECH: 01 Temperatures/PT BTS display. With a defective BTS,
there is no temperature compensation applied to the battery charging voltage.
Remedy: This can be caused by a shorted BTS cable or debris within the BTS RJ11
terminal. Either remove or replace the BTS (and cable), check the BTS connector to
ensure there are no shorted pins, or check inside the BTS RJ11 terminal for debris.
Note: If caused by a faulty BTS, the fault automatically clears once the BTS is removed.