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Grasp and lift the pin holding the cartridge straight up using needle-nose pliers. Next, replace the plastic scald-guard limiter and shower handle. If your Moen shower valve doesn’t have a scald-guard feature or a Posi-Temp or adjusting them doesn’t fix the problem, turn off the water to your shower. Finally, replace the shower valve handle and test the faucet. In addition, inspect the scald-guard limiter if it’s there and adjust it accordingly. Using a screwdriver, rotate it ¼ turn horizontally if it’s in a vertical (off) position.

Moen Posi-Temp shower valve troubleshooting, you can find out if the hot water inlet’s Posi-Temp valve to see if it’s well-positioned.

Next, separate the escutcheon from your shower wall, then remove it. Loosen the handle with an Allen wrench if it’s attached to the stem using an Allen nut, then detach the handle. Use a screwdriver to pry off the valve handle cap if one exists, then remove the screws holding together the handle and the faucet stem. You must ensure all the hot water line valves are turned on to allow water to reach your shower. If that doesn’t work or your shower valve doesn’t have that feature, clean or replace the cartridge.įollow the steps below to correct the issue. The solution to this problem is to adjust the scald-guard feature. Alternatively, the cartridge could be faulty or dirty, so you’ll need to do Moen shower valve cartridge troubleshooting to uncover the exact issue. The problem could be with the scald-guard feature if you are unable to receive hot water from your Moen shower valve. Fortunately, you can resolve this issue, but first, you need to know what could be causing it. It can be pretty frustrating if you are used to enjoying your long hot showers, then suddenly, your Moen shower stops dispensing hot water. This section also covers how to fix each specific issue in detail. You should look into the common problems below should your Moen shower valve starts acting. Replace the damaged stem or core Moen Shower Valve Troubleshooting (Problems and Solutions) New Moen Shower Valve Leaking Reinstall the shower valve well. Shower Faucet Won’t Turn Off Tighten the faucet or replace the valve or cartridge 8. Showerhead leaks Replace your Moen shower valve 7. Water pressure loss Remove debris, dirt, and obstacles in the shower valve 6. Dripping or leaking spout Replace the cartridge 5. Cold/hot sides reversed Reinstall the cartridge properly 4. The handle is hard to turn Lubricate or replace the cartridge 3. No hot water Adjust the scald-guard feature and make sure the cartridge is dirt or debris-free 2.

Moen Shower Valve Troubleshooting (Quick Fixes) Problem Recommended Solution 1.