Moen 3371 - Trouble Shooting

No flow or reduced flow Reduced flow or
no flow from device
Stop stems are closed
Turn stop stems
counterclockwise
No flow or reduced flow
Reduced flow or
no flow from device
Blocked screens on
cartridge
Remove cartridge and
rinse. See “Cartridge
Servicing” (pg 9).
Outlet water
temperature too high
Water is hotter than
105˚F at safety stop or
120˚F in full hot
Cartridge is out of
calibration
Remove cartridge and
rinse. See “Cartridge
Calibration” (pg 7).
Outlet water
temperature too high
Water is hotter than
105˚F at safety stop or
120˚F in full hot
Missing or damaged
bottom o-ring
Replace cartridge.
See “Cartridge
Servicing” (pg 9).
Leak from around the
cartridge
Continuous leak from
behind trim
Cartridge has missing
or damaged top
o-ring.
Replace cartridge.
See “Cartridge
Servicing” (pg 9).
Leak from around the
cartridge
Continuous leak from
behind trim
Missing or loose
cartridge nut
Replace or tighten
cartridge nut.
See “Cartridge
Servicing” (pg 9).
All hot or all cold water
Temperature
adjustment does not
provide mixed
temperature
Inlets are reversed
Reinstall with hot water
line to hot side of the
valve and cold water
line to cold side of the
valve.
No temperature stop
detected
Handle rotates greater
than 200˚ and does
not engage a stop
Temperature limit stop
is not properly seated
in the valve
Reassemble
temperature limit stop.
See “Cartridge
Servicing” (pg 9).
page 10page 5
TROUBLE SHOOTING CARTRIDGE SERVICING
Removal of cartridge continued:
5. Using a 1-1/4” socket, remove the cartridge retaining nut by turning
counterclockwise.
6. Remove temperature limit stop.
7. Remove cartridge by using a wrench to pull out the cartridge.
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Problem Description Cause Fix
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