M A I N T E N A N C E
Use caution with skin contact to hot water to
reduce the risk of scald injury. Before servicing the
valve, turn the water off using the stops on the iBox
Universal Plus or at the main shutoff.
⁄ Inspect the check valves 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 tempera-
ture limit stop and justify the handle.
T R O U B L E S H O O T I N G
Symptom
Insufficient water
Crossflow: hot water forced into
cold water supply or vice versa
when mixture is closed
Output temperature does not cor-
respond with temperature marked
on handle
Safety stop button not operating
Handle hard to turn
Shower or spout dripping
Temperature regulation not
possible
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⁄ To prolong the life of the themostatic cartridge,
If the shower will not be used for an
⁄ If you have questions, please contact Hansgrohe
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
– Volume control cartridge dirty
or worn
– (new installation) Hot and cold
supplies are reversed - should be
hot/left and cold/right
– Thermostatic cartridge dirty or
worn
regularly run it through its full range of
temperatures.
extended period of time, turn off the water
to the shower valve by using the service
stops in the iBox Universal Plus rough, or
at the main shut off.
Customer Service at 800 334 0455.
– 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 volume control
cartridge
– Turn the function block 180° or
correct the plumbing
– Replace the thermostatic
cartridge
Suggested Action
