we installed a shower downstairs and it worked for a while but now no hot water comes out.
We tapped into both hot and cold copper pipes from sink only 2 meters away and it still has hot water and cold.
Shower has one lever which is supposed to make water hotter as you turn it further. Cold comes out great but slows down and finally stops as I tunn toward hot setting.
Took cartridge out and with waters on it only come out one of two holes so it is someting stopping hot from reaching this far.
Must be air lock and with all copper pipe and most of it behind shower stall what can I do?