Installation Guide

10ZV-3247 REV 0
10. TROUBLESHOOTING CHART
PROBLEM CAUSE SOLUTION
Valve will not pass water. Both hot and cold water supplies
are not turned on.
Turn on both supplies. Valve
will not operate unless both hot
and cold water pressure is on.
Valve leaks when shut o. Hot and cold washers are worn
or foreign matter (dirt, chips) is
lodged between washers and
seat surfaces.
Replace washers using TA-9
washer repair kit.
Replace hot & cold seats using
TA-4 hot/cold seat repair kit.
Temperature control handle is
turned from cold to hot (or hot
back to cold) and volume from
spout or head is not constant.
Pressure-balancing piston
housed in spindle assembly is
restricted from free movement
by foreign matter.
Open valve halfway, remove
handle and tap spindle with
plastic hammer.
Check water pressure
balancing piston in control
spindle. See service
instructions.
Replace TA-10 flow control
spindle.
Valve delivers sucient
quantity of cold, but little hot,
or the reverse.
Same as above. Same as above.
Temperature varies without
moving handle.
Same as above. Same as above.
Valve delivery temperature
reduces gradually during use;
handle must be turned to
hotter positions to maintain
constant temperature.
Overdraw on hot water supply
(i.e. running out of hot water).
Reduce maximum flow
by using volume control
adjustment on valve or
showerhead. This will allow
longer period of use before
overdrawing hot water supply.
Valve delivers hot water when
initially opened. Water turns
colder as handle is rotated in a
counter-clockwise direction
toward the hot position.
Valve is piped incorrectly (i.e. the
hot supply is piped to the valve’s
cold inlet and the cold supply is
piped to the hot inlet.)
If piping is accessible, correct
connections to the valve. If
piping is not accessible, order
T-108 reverse seat and tool
kit. Older installations may
also require replacing the TA-4
hot/cold seat repair kit.