Owner's Guide

Warnings
The following table lists all possible warnings. Warnings indicate that one of the charge
controller’s operating parameters is approaching the specified limits for the device.
Display Text
(Description)
Warning
ID
Definition
BattOTWrn
(Battery over
temperature
warning)
W4
Battery temperature has risen above 55°C (131°F) for 10 seconds. The warning clears itself
when the battery temperature falls below 50°C (122°F) for 10 seconds.
AmbOTWrn
(Ambient over
temperature
warning)
W5
Ambient temperature inside the charge controller has risen above 70°C (158°F) for 10
seconds. The warning clears itself when the ambient temperature falls below 65°C (149°F)
for 10 seconds.
BattUTWrn
(Battery under
temperature
warning)
W9
Battery temperature has fallen below -20°C (-4°F) for 10 seconds. The warning clears itself
when the battery temperature rises above -10°C (14°F) for 10 seconds.
InputOVWrn
Input over voltage
warning
W11
This warning occurs when the input voltage is 540 V or above. The warning clears itself when
the voltage falls to 530 V.
OutputUVWrn
(Output under
voltage warning)
W12
24 V System: Output voltage has fallen below 20.0 VDC for 10 seconds. The warning clears
itself when the voltage rises above 21.0 VDC for 10 seconds.
48 V System: Output voltage has fallen below 40.0 VDC for 10 seconds. The warning clears
itself when the voltage rises above 42.0 VDC for 10 seconds.
OutputOVWrn
(Output over
voltage warning)
W34
24 V System: Output voltage has risen above 33.0 VDC for 10 seconds. The warning clears
itself when the voltage falls below 31.0 VDC for 10 seconds.
48 V System: Output voltage has risen above 66.0 VDC for 10 seconds. The warning clears
itself when the voltage falls below 62.0 VDC for 10 seconds.
HsOTWrn
(Heat sink over
temperature
warning)
W35
Heat sink temperature has risen above 75°C (167°F) for 10 seconds. The warning clears
itself when the heat sink temperature falls below 70°C (158°F) for 10 seconds.
HtSnkSnsErr
(Heat sink
temperature
sensor error)
W36
The warning clears itself when the heat sink sensor temperature falls within normal range. If
the error persists, contact your installer for a possible replacement.
Table 16Warning messages
Conext MPPT 80 and Conext MPPT 100 Owner’s Guide Operation
52 This document is for use by qualified personnel 990-6214