jonrarit
Well-Known Member
I've got an Eberspacher Hydronic M-II system that is only 3 years old but suffered from the circulation pump (Part 25 2434 25 01 00) failing and throwing up error codes. Upon stripping the pump it turns out the inner casing had cracked. It's made of very thin brittle plastic and looking at the design was quite frankly almost designed to fail. Of course you can only fit an original replacement pump due to the bespoke electronics inside it and wait for it ..... replacement pump = £600 !!!! I did some searching and a few online a bit cheaper around £350-400 but when you try to order they are suddenly "out of stock" so had to buy a new one from Eberspacher as much as it pained me to do so.
So I brought the old pump home and stripped it to determine the cause which as I said was basically bad design and poor quality material.
Santa has come early this year and I now have a 3D printer and thought this would make a great project. It's taken a few weeks of measuring, CAD design and prototyping but I have finally come up with a replacement inner casing, this time printed from a more suitable plastic (PETG). I also redesigned the casing reinforcing all the weak points to any prevent re-occurrence of the failure.
I've attached some pictures of the pump and replacement part.
So if anyone has the same system and has the same problem, feel free to drop me a message and hopefully I can help you fix it without having to fork out the £600 as I did.
Happy to help
JR
So I brought the old pump home and stripped it to determine the cause which as I said was basically bad design and poor quality material.
Santa has come early this year and I now have a 3D printer and thought this would make a great project. It's taken a few weeks of measuring, CAD design and prototyping but I have finally come up with a replacement inner casing, this time printed from a more suitable plastic (PETG). I also redesigned the casing reinforcing all the weak points to any prevent re-occurrence of the failure.
I've attached some pictures of the pump and replacement part.
So if anyone has the same system and has the same problem, feel free to drop me a message and hopefully I can help you fix it without having to fork out the £600 as I did.
Happy to help
JR
