Faucet issue installed a kohler, archer shower unit when I turn the lever to cold water, faucet and shower work just fine. However when I turn the lever to hot water, without lifting the shower diverter lever, water comes out of shower head and tub faucet. unit is not installed upside down and I have turn the feeding valves to half in an effort to reduce pressure help!!

Check that it's hooked up correctly. I've seen this exact problem when the hot water is hooked to the cold side of the valve.

replace the cartridge and you will be fine. yo can fine them at most large store that sell plumbing supplys.

They cost about 50.00 not hard to change out

Thanks

Tom

mite have intergral stops behind escution plate (the big round cover plate with 2 screws) that needs to be turned to the on position..

If this is a new installation and has always beenj this way, then I would suspect that there may be an obstruction in the cold water line leading to the valve. Or something stuck in the valve at the point where the cold water is connected. If someone has worked on thius valve recently , then I would suspect that they got the valve cartridge in backwards, If the catridge is not placed in the valve correctly the opperation is messed up.

Probably some pipe rust clogged the exit.
If u have pretty low pressure on one or both, hot and cold water, try keep force closed by hand the water exit at shower pipe, then start both cold and warm water gradually as much as u can keep it closed with the hand.
The pressure of the water will try "escape thru the clogged pipe and hopefully unlock that debris or rust!
The hot water pressure going back thru the cold water pipe might unclog that debris.
Just a simple fix which many times works as a charm..
Otherwise if this is not fixing, try close both water from main service valve.
Then unscrew the secondary shower valves and manually clean them or replace if very damaged.

adjust ur anti scold the setting is set to low when single handle shower units are shipped they are set in cold mode for safety ur install/instructional paperwork explains such and also advises on how to adjust---remove handle and on shaft will see a blue and red plastic clips that are adjustable slide towards u and move red for more hot water test water continue till comfort level is reached for hot water

Try draining the system and apply air pressure (min 30psi) to each faucet. Open other hot water faucets to allow pressure to vent. Next try draining and cleaning the hot water tank.

You will need to buy the o-rings to fix it. You can buy at most hardware stores if you know how to turn off the water you can fix this with more instructions. Let me know if you need more help.

you may have a defective shower stem, need to go back to store to have it replaced.

Hi pglaw,

My best guess is the supply valve for the hot side isn't open all the way. This valve is right on the valve and is accessed by taking off the front cover plate. This would still allow the pressure balancing valve to let water through but then you would have a small flow on the hot side.

If this isn't it then then cartridge is bad.

Please rate this response and good Luck,, phil