Ingecon SUN 125 TL U 208 Outdoor, Installation Manual, Page: 78 / 88

ABB2000IKI01
78
Installation manual Ingeteam
thermal switch built into the inverter in the radiator of the electronics block.
• If the displayed temperature is abnormally low (compared to room temperature), the root of the problem
could be with the NTC built into the inverter.
Checking the NTC
To check the NTC of the unit you will need to access the J18 terminal of the intake board. This terminal can be found
underneath the control card.
In terminal J18, do not connect wires coming into J18.1 and J18.2,
and use a multimeter to measure resistance between them. The resis-
tance measured should be approximately 5 k
Ω at around 77 °F (25 °C)
ambient temperature. It should be borne in mind that, for temperatures
below 77 °F (25 °C), the resistance reading will be greater than 5 k
Ω
,
whereas for temperatures above 77 °F (25 °C), the resistance reading
will be lower than 5 k
Ω .
Re-wire the NTC on the J18.1 and J18.2 connector and measure resis-
tance between connector pins themselves with the multimeter. The
resistance measured should be approximately 1 k
Ω .
In case any anomaly in the inverter’s NTC is found, contact technical
support.
J18
A
J13
J14
J12
J3
J4
J21
J5
J6
J7
J19
J28
J27
J16
J31
J17
J15
J11 J10
J20
J32
J1
J18
A
Checking the thermal switch
To check that the thermal switch is working properly, measure the continuity with a Category III multimeter between
terminals X3.8 and J19.2 (intake board) in the electronics block. The figure represents the entire terminal strip to
identify it more easily.
1 2 1 2
X1 XFN X2
1 ... 16
X3
1 ... 12
XAC
0 ... 4
To locate the position of the terminals within the intake board, see explanatory drawing titled “Intake
board” on page 77.
If you do not have continuity, you should contact technical support.
9.4.3. AC circuit protection
Code Alarm Reason for shutdown Description
0100H AC Protection AC Protection Error in some of the AC protectors, arresters.
In the event of a Motivo_Paro_Prot_AC reason for shutdown, check the status and monitoring of the AC circuit protec-
tions of the module in question.
To check the status of the protections, perform an in-depth check of section “6. Commissioning” in this document.
If the AC circuit protection status is correct, proceed to verify their monitoring. To do this, the monitoring branches
must be checked: