Kohler K-638 Guide Du Propriétaire page 8

Troubleshooting (cont.)
Valve Troubleshooting Table
Symptoms
1. Maximum blend
temperature too hot or
too cold.
Continuous flow.
2.
3. Massage mode shuts
down but water continues
to run from the
showerhead(s).
4. Only cold water flows
from the outlets.
5. Fluctuating or reduced
flow rate. Valve is
functioning properly.
Blend temperature drift or
6.
temperature cycling.
1069763-5-F
Probable Cause
A. Incorrect maximum temperature
setting.
B. If the above recommended
action does not correct the
symptom, the interface or valve
requires servicing.
A. System will not switch off.
A. Unequal flow rates between
valve outlets.
B. Fluctuation of inlet pressure.
C. Pressure difference greater than
5 psi (34.5 kPa) between the hot
and cold supply lines.
A. Hot water supply is either not
turned on or not connected to
the valve inlet.
B. Hot water inlet is blocked.
C. If none of the recommended
actions for the above issues
correct the symptom, the valve
requires servicing.
A. Inlet/outlet fittings may be
blocked.
B. Water outlet pressure is low.
C. Fluctuating flow.
D. If none of the recommended
actions for the above issues
correct the symptom, the valve
requires servicing.
A. Fluctuating water temperature.
B. Hot water supply temperature
fluctuation.
C. Pressure difference greater than
5 psi (34.5 kPa) between the hot
and cold supply lines.
Recommended Action
A. Refer to the "Set the Maximum
Temperature" section in the Digital
Interface User Guide.
B. Contact your Kohler Co.
Authorized Service Representative.
A. Turn off the water and power
supply and contact your Kohler Co.
Authorized Service Representative.
A. Verify the installation has one
bodyspray per valve outlet and
uses bodysprays with the same
flow rate. If needed, contact the
installer to revise the installation.
B. Install pressure regulators in the
supply lines.
C. Install pressure regulators to bring
the supplies within 5 psi (34.5 kPa)
of each other.
A. Check the hot water supply is
turned on and connected to the
valve inlet.
B. Check the hot water inlet screen for
blockage. Clean or replace the inlet
screen. Refer to the Valve
Homeowners Guide.
C. Contact your Kohler Co.
Authorized Service Representative.
A. Check the inlets and outlets for
blockage or debris. Clean the inlet
screens. Refer to the "Clean the
Inlet Screens" section in the Valve
Homeowners Guide.
C. Verify that the dynamic inlet
pressures are within specifications.
Refer to "Specifications" section in
the Valve Homeowners Guide.
D. Contact your Kohler Co.
Authorized Service Representative.
A. Check the inlet temperature
differentials and verify they are
sufficient. Refer to "Specifications"
section in the Valve Homeowners
Guide.
B. Check and make adjustments as
needed.
C. Install pressure regulators to bring
the supplies within 5 psi (34.5 kPa)
of each other.
8 Kohler Co.