Troubleshooting Guide

** It is imperative to identify your Faucet model to determine the correct replacement part number(s), as the size and/or number of the replacement part(s) will vary from Faucet model to Faucet
model. Please see your Faucet model’s replacement part list to determine the correct replacement part number(s). Contact MOEN at 1-800-Buy-MOEN or 1-800-289-6636 for further assistance.
2
Problem
Specific Issue
Typical Cause(s)
Possible Solutions
Contacting MOEN
Water
Temperature
No COLD (just hot) or no HOT (just cold)
water on tub shower units
Debris or an obstruction in the
balancing spool is causing it not
to move freely within its housing.
In some models, a lack of
pressure feeding the hot and cold
could be the cause. The valve
may also need to be calibrated.
Posi-Temp Models
A. The 1222 cartridge would need to be replaced, and the valve body would need to be flushed and
cleaned.
For Further
Assistance,
MOEN U.S.
1-800-Buy-MOEN
(1-800-289-6636)
Moentrol Models
A. Inspect the 1423 balancing spool. This will appear on the front of the valve body, either to the right or
above the cartridge. It will look similar to a large flat head screw, and it will be brass in color. A large flat-
bladed screwdriver can be used to unscrew the balancing spool from the valve. There will be a spool
inside this piece, and it needs to move freely inside of its shell. If the spool does not move freely, then the
1423 balancing spool will need to be replaced.
¾ ExactTemp Models
Note: for ½” ExactTemp valves refer to original service manual.
A. Verify the shut off valves (check stop kit) are in the open position. This will be a screw in the center of
the check stop kit. These should be unscrewed counter-clockwise.
B. Check to see if the hot and cold lines are reversed. If the supply lines are accessible, feel the
temperature of the pipes. The cold supply must be connected to the cold (right) side of the valve, and the
hot supply must be connected to the hot (left) side of the valve. If this is the case, the valve will need to
be reinstalled.
Note: The cartridge cannot be reversed to correct this issue.
C. The cartridge would need to be calibrated.
Note: When calibrated properly, the ExactTemp valve should provide a range of temperature of 80 to
120 degrees Fahrenheit. Please contact MOEN for the ExactTemp service manual which will walk you
through calibration at 1-800-Buy-MOEN or 1-800-289-6636.
ioDigital Models
A. Verify the shut off valves are in the open position. These will vary depending on your ioDigital model.
B. Remove the valve inlet screens and inspect for any debris. The water supply will need to be shut off,
and then the black nut on the inlets can be unscrewed to remove the inlet screens. Rinse off any debris
that may be on these screens and reinstall.
Standard Valve Models
A. Check to see if there are shut off valves installed with the unit. Verify these valves are opened all the
way.
B. The cartridge (for one-handle faucets) or cartridges (for two-handle faucets) would need to be
removed (or replaced) and the valve body would need to be flushed and cleaned.
No WARM water (no mixture of hot and
cold) on tub shower units
This is most likely due to an error
in installation, an issue with the
cartridge, a lack of hot and cold
water supplied to the valve or a
lack of calibration of temperature.
Posi-Temp Models
A. Make sure the handle is on properly. If it is on upside down, the handle will not rotate the cartridge to
provide a mixture of hot and cold. Simply remove the handle and reinstall.
B. If issue persists, replace the 1222 cartridge and flush the valve body.
Moentrol or Standard Valve Models
A. Replace the 1225 cartridge and flush the valve body.
ExactTemp Models
A. Verify the shut off valves (check stop kit) are in the "open" position. This will be a screw in the center
of the check stop kit. These should be unscrewed counter-clockwise.
B. Check to see if the hot and cold lines are reversed. If the supply lines are accessible, feel the
temperature of the pipes. The cold supply must be connected to the cold (right) side of the valve, and the
hot supply must be connected to the hot (left) side of the valve. If this is the case, the valve will need to
be reinstalled.
Note: The cartridge cannot be reversed to correct this issue.