nzpaul

When I was filling my expansion vessel, after a boil over due to fan failure, these bits of foam floated out of the vessel as I overfilled it. I don't think they are related to the overheating, as the edges are worn, as if they have been going around the system for a while.

They are made of foam, which is quite friable and I'm sure they are parts of the same object.

The outer surface is smooth and there are some remnants of a smooth inner surface as if it was tubular. The top looks like something should be located in there, as there is a recess.

Any ideas as to what it is and what it could mean?

Herman K

Your overflow tank level sensor (float) is coming apart time to get a new one

nzpaul

Thanks for that. I've had no warning of low level, so it never occurred to me to look for that.

I've found in the PET - 928 641 503 01

soontobered84

Good call Herman! I was racking my brain trying to come up with the general shape of the floaties and couldn't figure it out. I just couldn't get it to register.