Hi- My bathtub faucet was leaky and I replaced the cartridge and all seemed ok, except the handle only turns about 1/4 around and I only get scalding hot water. Water appears to be coming out of the pipes when I removed the cartridge (I had to set house water supply to really, really low to test)
You likely took out the anti-scald ring out when you took it apart and then put it in in a different spot preventing the handle from turning far enough. You may also have the cartridge or handle upsidedown.
SOURCE: 1 handle pull and turn bath room faucet no hot
a common fault if the handle is forced the spindles get worn best to replace
SOURCE: SINGLE VALVE SHOWER FAUCET TURN
I can think of a few possibilities. 1) Something is blocking the hot water in to the mixing valve. Fixing this would probably mean cutting out the valve (then redoing the water lines with a new valve (possible option)).
2) The hot water line is losing too much heat going to this second faucet. (If the two tubs are on different floors this is more common. Many places are plumbed with one line with Ts to all fixtures.) Insulating the water lines might help; alternatively an point of use water heater would help.
3) The hot water and the cold water in are reversed. (Test by leaving the water on full cold and full hot for a few minutes each.) If you get full hot when it should be cold, valves with a cartridge are easy to fix. Open the valve assembly, remove the cartridge and reinsert it after turning it around (side closest to you when you removed it goes in first). Otherwise, the incoming plumbing needs to be redone at the point where the cold and hot lines come into the shower.
I hope this helps.
Cindy Wells
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