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(ii) Micro inverter series
1) Model FDC100VN, 125VN, 140VN
a)
Replace the PCB after elapsing 3 minutes from power OFF.
(Be sure to measure voltage (DC) on both capacitor terminals located in controller back, and check that the
voltage is discharged sufficiently.(Refer to Fig.1))
b)
Take off the connection of inverter PCB terminal block connector and remove the screw of power transistor then
remove the PCB. Wipe off the silicon grease neatly on the controller's radiation heat fins.
c)
Refer to table1 for the setting of switch (JSW10,11) of new PCB.
d)
Before installing the power transistor on the new PCB,Apply uniformly a bundled of silicon grease first on the
surface of power transistor.Make sure it is applied to prevent damage on power transistor.
e)
Tighten the screw of power transistor on inverter PCB and connect the terminal block.Confirm the connection and
don't use soldering in the connection.Tighten properly the power transistor with a screw and make sure there is no
clearance gap.Power transistor can be damage if not properly tighten.(Recommended power transistor tightening
torque:0.98~1.47N∙m)
Terminal block
TB1
TB2
TB6
TB5
TB7
TB8
TB9
Parts arrangement view
Parts No.
PCA565A151-1
CNACT1
Table. 1 Switch setting
-1
-2
JSW10
-3
-4
Terminal block
TB10
TB11
Connector
CNI2
CNI4
Switch
JSW11
JSW10
Fig.1 Position of capacitor
OFF
OFF
JSW11
OFF
OFF
135
-
-
'11 • PAC-T-160
PCA012D025B
Voltage measurement parts
-1
ON
-2
OFF
-3
OFF
-4
ON
C
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Table of Contents
Troubleshooting
