I am a landlord, and I have MIXET single handle shower fixtures in my apartments (Cartridge # MS-5AT).
I recently replaced the cartridge in one shower about a month ago because the fixture produced only cold water. The tenant now complains that the shower again produces only cold water and that the new cartridge only worked for about 5 days.
Any ideas what to do? I can replace the cartridge again, of course, but I would like to solve the problem.
Thanks for your help.