Can anybody tell if it is possible to clean the secondary filter (Part #AP4113926)? Is it possible to open this filter? It is bloked with calcium or something and it is impossible to shake it of. Or do I have to buy a new one?
If it is mineral deposits you should be able to clean it by soaking it in vinegar or CLR overnight.
Thank you,
I tried vinegar but i am sure i did not put enough of it. So, i will try to do that tonight again.