29
Troubleshooting
Problem
Possible Cause
Solution
Insufficient water
Supply pressure inadequate
Check water pressure (If a pump
has been installed check to see if
the pump is working).
Regulator filter dirty
Clean filters
Handshower filter seal dirty
Clean filter seal between hand-
shower and hose
Crossflow, hot water being forced into
cold water pipe, or vice versa, when
mixer is closed
Backflow preventers dirty or worn
Clean backflow preventers, replace
if necessary
Spout temperature does not cor-
respond with temperature set
Thermostat has not been adjusted
Adjust thermostat
Hot water temperature too low
Increase hot water temperature
Temperature regulation not possible
Thermostatic cartridge dirty or worn
Clean thermostatic cartridge,
replace if necessary
For new installations: rough valve
incorrectly connected (should be:
cold right, hot left)
Rotate function block 180°or cor-
rect the plumbing
Safety stop button not operating
Spring dirty or worn
Clean spring and/or button,
replace if necessary
Button calcified
Shutoff valve stiff
Select shutoff valve DN9 dirty or
worn
Replace Select shutoff valve DN9
Shower or spout dripping
Select shutoff valve DN9 dirty or
worn
Replace Select shutoff valve DN9
Pushbutton cannot be actuated or is
without function
Safety guard of on-off valve has not
been removed
Remove safety guard from isolating
valve
Pushbutton is jammed or stiff
O-ring needs to be lubricated
Lightly lubricate the o-ring using
white plumbers' grease
Pushbutton does not snap in
Select Adapter trimmed incorrectly
Trim and mount Select Adapter ac-
cording to Fig. 8 (see page 8)
Press the pushbutton into the
escutcheon, then mount the escutch-
eon.
Maintenance
• Inspect the check valves at least once per year.
Replace the check valves if necessary.
• 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 cartridge,
regularly run it through its full range of
temperatures.
