I have a new installed Delta one handle faucet in my bath.
It worked well. But after just about 2 weeks, it cannot turn off water after shower.
I opened it and it seems spring and seat item are in good situation. I put it back and it worked well.
Unfortunately, it could not turn off again after a related long shower even the handle is turned to close position.
I tested it several time. If I run hot water for a shot time, it can turn off correctly. If I run hot water for a long time, it cannot turn off. I guess somehow the seat item/spring for hot water does not work well.
Should I replace the spring and seat item (it just 2 weeks)? Or, is there a possible install mistake I have made?