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Liebherr fridge start relay wiring conundrum

By Question Mark
September 12, 2021 in DIY Appliance Repair Help

https://appliantology.org/topic/88071-liebherr-fridge-start-relay-wiring-conundrum/

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Question Mark

Posted September 12, 2021

Hello,

This is my first post on this forum.

I have a Liebherr fridge that started smelling...

After a quick inspection, I found the start relay assembly with evidence of burns. I ordered a replacement, but the markings that I had made on the wires are gone. I cannot find a schematic anywhere...

Would anyone know how to wire it or how to figure out which wire is which, or perhaps know how to find the schematics?

There are four wires green/yellow - obviously the ground. Blue, obviously the neutral. Black. Gray.
There are five possible places on the relay assy: Ground symbol, L (must be 'Line'), N (must be 'Neutral'), S (??).
It looks like the 'S' was never connected on the old assy (no scratch marks).
Wiring it with the black on 'L' and the grey on the 5th connector, I get no-joy: the fridge lights up, shows the temperature, but no compressor.
The relay has a code ZXF4. I ordered the same, but a ZXFF arrived. Does anyone know what the difference is? Could this cause an issue?

Thank you.

Cheers,
Mark