i have a TK-2 that has worked great for many years. Yesrerday i noticed that the hot water flow in the shower is about half normal.
It will start with full pressure then drop to half in about 3-5 sec.
The TK-2 continues to run, just with low water pressure output.
When i turn the TK-2 off and run the 'hot' water there is no pressure drop.
I have cleaned the inlet filter and replaced the house filter i have setup before it.
I run the water through a sofetner before the TK-2.
Does it have a valve in it that can restrict water flow?
Also, i'll buy a new unit before i pay someone to come out and fix it.