Relevant Igbt Test Points On The Main Outdoor Pcb - Electrolux KELVINATOR KSV53HRA Diagnostic Manual

If E1 fault has not cleared:
Check the continuity of the "IGBT" as illustrated below.
Turn off the power & let the inverter electrolytic capacitors completely discharge.
Identify the Negative DC, U, V & W soldered points so as to test each internal IGBT resistance value.
The diagrams listed below illustrate the method of achieving this.
Set the multimeter to a DC Mega Ohms setting.
Place the Negative probe on the Negative DC soldered point on the outdoor PCB & the Positive probe on
the U soldered point on the outdoor PCB.
Place the Negative probe on the Negative DC soldered point on the outdoor PCB & the Positive probe on
the V soldered point on the outdoor PCB.
Place the Negative probe on the Negative DC soldered point on the outdoor PCB & the Positive probe on
the W soldered point on the outdoor PCB.
Note: Insure the multimeter probes are placed in their correct orientation as specified above.
Note: If any of the above tests indicate a "Short Circuit" replace the main PCB assembly.
All of the above tests should read several Mega Ohms.

Relevant IGBT test points on the main outdoor PCB.

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