Thermostatic Valve Troubleshooting
If you are experiencing issues with your thermostatic water temperature, there are various methods to resolve the issue. Below, we will share three different approaches. However, you may just need to set your temperature appropriately. Or, in some cases, cartridges and check valves can become clogged with debris and need to be cleaned.
Before you begin, the following tools will be necessary for repair, depending on which method you use:
• 2–2.5 mm Allen key
• Phillips screwdriver
• Slotted screwdriver
• Adjustable wrench
• Long-nose pliers
How To Set Thermostatic Valve Temperature
Step 1
Remove the thermostatic handle and expose the thermostatic ring. The handle will either have a set screw in the center of the handle or a set screw opening around the trim ring. Once the set screw is loosened, the handle will pull straight off.
Step 2
Make note of the thermostatic ring placement and remove it from the valve.
Step 3
Temporarily place the handle back on and turn it until you find the temperature you prefer.
Step 4
Remove the handle and reset the ring in the same place it was originally.
Step 5
Reattach the handle.
How To Clean Thermostatic Check Valve
Before you begin, please shut off the water at the fixture or main, if necessary. Open the water lines and allow any excess water to empty from your water lines.
Step 1
Remove the handles. The handle will either have a set screw in the center of the handle or a set screw opening around the trim ring. Once the set screw is loosened, the handle will pull straight off.
Step 2
Remove any white plastic handle adapters using a Philips head screwdriver.
Step 3
Remove the trim plate for the valve to reveal the valve body.
Step 4
Locate the check valve cover plates by finding the cover on either side of the valve body with a slot in the face.
Step 5
Use a large flat head screwdriver to remove the cover to reveal the check valve.
Step 6
Use a pair of long-nose pliers to remove the check valves.
Step 7
Flush the inside of the valve with clean water to remove any debris or buildup.
Step 8
Reverse instructions to reassemble the unit.
Step 9
Turn your water back on and test the water flow.
How To Clean Thermostatic Cartridge
Before you begin, shut off the water at the fixture or main, if necessary. Open the water lines and allow any excess water to empty from your water lines.
Step 1
Remove the handles. The handle will either have a set screw in the center of the handle or a set screw opening around the trim ring. Once the set screw is loosened, the handle will pull straight off.
Step 2
Remove any white plastic caps using a Philips head screwdriver.
Step 3
Remove the rectangular trim for the valve to reveal the valve body.
Step 4
Locate the thermostatic cartridge in the center of the valve body where the center handle would connect.
Step 5
Remove the set screw (2–2.5 mm hex required) located on the underside of the middle outcropping of the faucet body. Note: It is suggested to use a rag to prevent the set screw from falling into the wall cavity, as there will be no way to hold the cartridge in place without the screw.
Step 6
With the set screw free, the cartridge can be removed using a set of suitable-sized pliers.
Step 7
Once the cartridge is removed, flush the valve with clean water and remove any debris or buildup.
Step 8
Soak the cartridge in a one-part warm water, one-part vinegar mixture overnight to remove any buildup.
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