Owner's Guide

3. Press the down button to view additional fault, error, or warning messages. If there
are no active faults, errors, or warnings, no messages are displayed.
Faults
The following table lists all possible faults. Faults are conditions that indicate that the
charge controller might have incurred permanent damage or that user intervention is
required before the charge controller will operate again. If one of these faults occur, the
charge controller might also need to be serviced before it can be fully operational again.
Display Text
(Description)
Fault
ID
Definition
AuxPSFlt
(Auxiliary power
supply fault)
F54
More than two auxiliary power supply errors (F26) have occurred within one minute.
Damage to the charge controller is possible, so the fault will not clear until an operator clears it
manually using the SCP.
GroundFlt1
(Ground fault,
type 1)
F56
A PV ground fault has been detected. The ground fault message clears after system power is
removed, the ground fault is corrected, the GFP fuse is replaced by qualified personnel (negative or
positive grounded systems only), and system power is restored. See the Conext MPPT 80 and
Conext MPPT 100 Solar Charge Controller Installation Guide for more information.
InputOVFlt
(Input over
voltage fault)
F74
Input voltage has exceeded 600 VDC. Damage to the charge controller is possible, so the fault will
not clear until an operator clears it manually using the SCP.
FanOVFlt
(Fan over
voltage fault)
F75
Fan voltage has risen above 13.8 V. The fan will cease operating, but the charge controller will
continue operating though it will probably experience power derating. The fault will not clear until an
operator clears it manually using the SCP.
OutputOCFlt
(Output over
current fault)
F78
Three output over current errors (F71 or F73) have occurred within 60 seconds.
The fault will not clear until an operator clears it manually using the SCP.
FanOCFlt
(Fan over
current fault)
F79
More than two Fan Errors have occurred within 30 seconds. The fan will cease operating, but the
charge controller will continue operating though it will probably experience power derating. The
fault will clear itself when the operator toggles power to the charge controller.
FanUVFlt
(Fan under
voltage fault)
F80
Fan voltage has fallen below 3.5 V. The fan will cease operating, but the charge controller will
continue operating though it will probably experience power derating. The fault will not clear until an
operator clears it manually using the SCP.
FanUCFlt
(Fan under
current fault)
F81
Fan current has fallen below 0.5 A for 100 milliseconds. The fan will cease operating, but the charge
controller will continue operating though it will probably experience power derating. The fault will
not clear until an operator clears it manually using the SCP.
Table 14Fault messages
Operation Conext MPPT 80 and Conext MPPT 100 Owner’s Guide
990-6214B This document is for use by qualified personnel 49