Troubleshooting
Problem
Insufficient water
Crossflow: hot water forced into
cold water supply or vice versa
when mixture is closed
Output temperature does not
correspond with temperature
marked on handle
Safety stop button not operating
Handle hard to turn
Shower or spout dripping
Temperature regulation not
possible
Maintenance
• Inspect the check valves and filters at least
once per year. Replace if dirty or worn.
• Should the volume of water decrease over
time, inspect and clean the filters on the
thermostatic cartridge. After reassembly, set
the high temperature limit stop and justify the
handle.
• To prolong the life of the themostatic car-
tridge, regularly run it through its full range of
temperatures.
Possible Cause
– Supply pressure inadequate
– Cartridge filters dirty
– Showerhead or handshower
filter dirty
– Check valves dirty or worn
– Handle not justified
– Water heater set too low
– Button and/or spring are dirty
or worn
– Cartridge dirty or worn
– Diverter cartridge dirty or
worn
– (new installation) Hot and
cold supplies are reversed -
should be hot/left and cold/
right
– Thermostatic cartridge dirty
or worn
Solution
– Check water pressure
– Clean the filters
– Clean the filter
– Clean check valves, replace
if necessary
– Justify the handle
– Increase the hot water
temperature
– Clean spring and button,
replace if necessary
– Replace cartridge
– Clean or replace diverter
cartridge
– Turn the function block 180°
or correct the plumbing
– Replace the thermostatic
cartridge
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