Kohler K-527 Assembly instructions
Homeowners Guide
Digital Interface
Mproduct numbers are for Mexico (i.e. K-12345M)
Los números de productos seguidos de Mcorresponden a México
(Ej. K-12345M)
Français, page “Français-1”
Español, página “Español-1”
K-527, K-527-E
1143086-5-E
IMPORTANT INSTRUCTIONS
READ AND SAVE FOR THE CONSUMER
This device complies with Part 15 of the FCC Rules.
Operation is subject to the following two conditions:
This device may not cause harmful interference.
This device must accept any interference received, including interference that may cause undesired operation.
NOTE: This equipment has been tested and found to comply with the limits for a Class B digital device,
pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against
harmful interference in a residential installation. This equipment generates, uses and can radiate radio
frequency energy and, if not installed and used in accordance with the instructions, may cause harmful
interference to radio communications. However, there is no guarantee that interference will not occur in a
particular installation.
If this equipment does cause harmful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more
of the following measures:
•Reorient or relocate the receiving antenna.
•Increase the separation between the equipment and receiver.
•Connect the equipment into an outlet on a circuit different from that to which the receiver is
connected.
•Consult the dealer or an experienced radio/television technician for help.
Modifications: Any modifications made to this device that are not approved by Kohler Co. may void the
authority granted to the user by the FCC to operate this equipment.
Specifications
Interface
Ambient Temperature Max 125°F (51.5°C)
Maximum Relative Humidity 100% condensing (External surface only)
User Interface Cable Length 20’ (6.1 m)
Valve
Ambient Temperature Greater than 34°F (1°C), Max 104°F (40°C)
Maximum Relative Humidity 95% non-condensing
Electrical Service 120 V, 15 A, 60 Hz
Care and Cleaning
For best results, keep the following in mind when caring for your KOHLER product:
•Use a mild detergent such as liquid dishwashing soap and warm water for cleaning. Do not use
abrasive cleaners that may scratch or dull the surface.
•Carefully read the cleaner product label to ensure the cleaner is safe for use on the material.
•Always test your cleaning solution on an inconspicuous area before applying to the entire surface.
•Do not allow cleaners to sit or soak on the surface.
•Wipe surfaces clean and rinse completely with water immediately after cleaner application. Rinse
and dry any overspray that lands on nearby surfaces.
•Use a soft, dampened sponge or cloth. Never use an abrasive material such as a brush or scouring
pad to clean surfaces.
For detailed cleaning information and products to consider, visit www.kohler.com/clean. To order Care &
Cleaning information, call 1-800-456-4537.
1143086-5-E 2 Kohler Co.
Warranty
KOHLER
®
Electronic Faucets, Valves and Controls
FIVE-YEAR LIMITED WARRANTY
Kohler Co. warrants that its electronic faucets, valves and controls will be free of defects in material and
workmanship during normal residential use for five years from the date the product is installed. This
warranty applies only to electronic faucets, valves and controls installed in the United States of America,
Canada and Mexico (″North America″).
If a defect is found in normal residential use, Kohler Co. will, at its election, repair, provide a replacement
part or product, or make appropriate adjustment where Kohler Co.’s inspection discloses any such defect.
Damage caused by accident, misuse, or abuse is not covered by this warranty. Improper care and cleaning
will void the warranty*. Proof of purchase (original sales receipt) must be provided to Kohler Co. with all
warranty claims. Kohler Co. is not responsible for labor charges, installation, or other incidental or
consequential costs other than those noted above. In no event shall the liability of Kohler Co. exceed the
purchase price of the faucet, valve or control.
If the electronic faucets, valves or controls are used commercially or are installed outside of North America,
Kohler Co. warrants that the faucet, valve or control will be free from defects in material and workmanship
for one (1) year from the date the product is installed, with all other terms of this warranty applying except
duration.
If you believe that you have a warranty claim, contact your Home Center, Dealer, Plumbing Contractor or
E-tailer. Please be sure to provide all pertinent information regarding your claim, including a complete
description of the problem, the product, model number, the date the product was purchased, from whom the
product was purchased and the installation date. Also include your original invoice. For other information,
or to obtain the name and address of the service and repair facility nearest you, write Kohler Co., Attn:
Customer Care Center, Kohler, Wisconsin 53044 USA, or by calling 1-800-4-KOHLER (1-800-456-4537) from
within the USA and Canada, and 001-800-456-4537 from within Mexico, or visit www.kohler.com within the
USA, www.ca.kohler.com from within Canada, or www.mx.kohler.com in Mexico.
THE FOREGOING WARRANTIES ARE IN LIEU OF ALL OTHER WARRANTIES, EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO THE IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
KOHLER CO. AND/OR SELLER DISCLAIM ANY LIABILITY FOR SPECIAL, INCIDENTAL OR
CONSEQUENTIAL DAMAGES. Some states/provinces do not allow limitations on how long an implied
warranty lasts or the exclusion or limitation of such damages, so these limitations and exclusions may not
apply to you. This warranty gives the consumer specific legal rights. You may also have other rights that
vary from state/province to state/province. This warranty is to the original consumer purchaser only, and
excludes product damage due to installation error, product abuse, or product misuse, whether performed
by a contractor, service company, or the consumer.
This is Kohler Co.’s exclusive written warranty.
*Never use cleaners containing abrasive cleansers, ammonia, bleach, acids, waxes, alcohol, solvents or
other products not recommended for chrome. This will void the warranty.
Troubleshooting
WARNING: Risk of electric shock. Disconnect power before performing any maintenance. When
disconnected, the product will no longer be electrically live, which will eliminate the risk of electric
shock.
CAUTION: Risk of personal injury. The valve may contain hot water; be careful when draining
any residual water.
NOTICE: Turn OFF the power and water supply to the valve before performing any maintenance to the
valve.
It is recommended that any valve maintenance should be performed by a Kohler Co. Authorized Service
Representative.
This troubleshooting guide is for general aid only. For service and installation issues or concerns, call
Kohler Co. 3 1143086-5-E
Troubleshooting (cont.)
1-800-4KOHLER.
Troubleshooting Table
Symptoms Probable Cause Recommended Action
1. Control panel is not lit. A. Valve is not plugged into the
outlet. A. Plug the valve into an outlet.
B. Interface cable connections may
be loose or disconnected. B. Check all interface cable
connections, connect if needed.
C. Circuit breaker has been
tripped. C. Reset the circuit breaker.
D. The valve memory may require
resetting. D. Disconnect and reconnect the valve
power cord from the electrical
outlet.
E. A″straight-through″cable or
coupler was used to connect the
interface to the valve.
E. Connect the interface to the valve
using a ″cross-over″cable and
coupler.
F. If none of the recommended
actions for the above issues
correct the symptom, the valve
or interface requires servicing.
F. Contact your Kohler Co.
Authorized Service Representative.
2. The interface power
indicator is lit, but the
system will not turn on.
A. Interface cable connections may
be loose. A. Check all interface cable
connections, connect if needed.
B. If the above recommended
action does not correct the
symptom, the interface or valve
requires servicing.
B. Contact your Kohler Co.
Authorized Service Representative.
3. The interface functions
normally but no water
flows from the
components.
A. Valve outlets may be blocked. A. Check the valve outlets for
blockage or debris. Clean the outlet
screens. Refer to the ″Clean the
Outlet Screens″section in the Valve
Homeowners Guide.
B. Fittings/Spray faces may be
blocked. B. Clean the spray faces and any
screens in your fittings.
C. Hot and cold water supplies are
not turned on. C. Turn on the water supply to the
valve.
D. The valve memory may require
resetting. D. Disconnect and reconnect the valve
power cord from the electrical
outlet.
E. System error. E. Check the user interface for an
error code. Refer to the ″Error Code
Diagnosis″section in the Digital
Interface Homeowners or User
Guide.
F. If none of the recommended
actions for the above issues
correct the symptom, the valve
requires servicing.
F. Contact your Kohler Co.
Authorized Service Representative.
4. Maximum blend
temperature too hot or
too cold.
A. Incorrect maximum temperature
setting. A. Refer to the ″Set the Maximum
Temperature″section in the Digital
Interface User Guide.
B. If the above recommended
action does not correct the
symptom, the interface or valve
requires servicing.
B. Contact your Kohler Co.
Authorized Service Representative.
5. Continuous flow. A. System will not switch off. A. Turn off the water and power
supply and contact your Kohler Co.
Authorized Service Representative.
1143086-5-E 4 Kohler Co.
Troubleshooting (cont.)
Troubleshooting Table
Symptoms Probable Cause Recommended Action
6. Only cold water flows
from the outlets. A. Hot water supply is either not
turned on or not connected to
the valve inlet.
A. Check if the hot water supply is
turned on and connected to the
valve inlet.
B. Hot water inlet is blocked. B. Check the hot water inlet screen for
blockage. Clean or replace the inlet
screen. Refer to the Valve
Homeowners Guide.
C. The hot water supply is
exhausted. C. Allow time for the water heater to
come up to temperature.
D. If none of the recommended
actions for the above issues
correct the symptom, the valve
requires servicing.
D. Contact your Kohler Co.
Authorized Service Representative.
7. Fluctuating or reduced
flow rate. Valve is
functioning properly.
A. Valve inlets may be blocked. A. Check the valve inlets for blockage
or debris. Clean the inlet screens.
Refer to the ″Clean the Inlet
Screens″section in the Valve
Homeowners Guide.
B. Fittings/Spray faces may be
blocked. B. Clean the spray faces and any
screens in your fittings.
C. Water outlet pressure is low. C. Check that the flow rate is at or
above the minimum rate required.
Refer to ″Specifications″section in
the Valve Homeowners Guide.
D. Fluctuating supply pressure. D. Verify that the dynamic inlet
pressures are within specifications.
Refer to ″Specifications″section in
the Valve Homeowners Guide.
E. Water supply temperatures are
not within the recommended
range.
E. Check if inlet water temperatures
are within the recommended range.
8. Blend temperature drift or
temperature cycling. A. Fluctuating water supply
temperature. A. Check the inlet temperature
differentials and verify they are
sufficient. Refer to ″Specifications″
section in the Valve Homeowners
Guide.
B. Pressure difference greater than
5 psi (34.5 kPa) between the hot
and cold supply lines.
B. Install pressure regulators to bring
the supplies within 5 psi (34.5 kPa)
of each other.
C. If none of the recommended
actions for the above issues
correct the symptom, the valve
requires servicing.
C. Contact your Kohler Co.
Authorized Service Representative.
9. Water leaking from the
valve.
CAUTION: Risk of
personal injury or
product damage. Turn off
the main power and
water supply.
A. Connections are not secure. A. Check all connections. Make
adjustments as needed.
B. Seals are worn or damaged. B. Order a seal service pack and
replace all seals.
C. Internal leak. C. Unit requires overhaul. Contact
your Kohler Co. Authorized Service
Representative.
10. Hot water only, the valve
shuts down. A. Hot and cold lines are reversed. A. Switch hot and cold water supply
connections. Verify the hot water
supply is connected to the inlet
marked ″H″and the cold water
supply is connected to the inlet
marked ″C.″
Kohler Co. 5 1143086-5-E
Troubleshooting (cont.)
Error Code Diagnosis
Error Code Error Description Possible Cause Corrective Action
3 Outlet temperature is too
high or control thermistor
fault.
A. The inlet/outlet fittings
may be blocked. A. Check the valve outlets for
blockage or debris. Clean the
inlet screens. Refer to the
″Clean the Inlet Screens″
section in the Valve
Homeowners Guide.
B. Cold water supply failure. B. Reinstate the cold water
supply.
C. Safety circuit may require
resetting. C. Press the [Power Icon] once,
the display will show ″SEt;″
press the [Power Icon] again
to turn the system OFF;
resume use of the system as
usual. If the fault reoccurs,
contact your Kohler Co.
Authorized Service
Representative.
D. Thermistor is damaged. D. Replace the thermistor.
Contact your Kohler Co.
Authorized Service
Representative.
E. Valve circuit board is
damaged. E. Replace the valve circuit
board. Contact your Kohler
Co. Authorized Service
Representative.
4 Open circuit
thermistor detected. A. Thermistor is damaged. A. Replace the thermistor.
Contact your Kohler Co.
Authorized Service
Representative.
B. Valve circuit board is
damaged. B. Replace the valve circuit
board. Contact your Kohler
Co. Authorized Service
Representative.
7 Outlet temperature is
too high or outlet
thermistor fault.
A. The inlet/outlet fittings
may be blocked. A. Check the valve outlets for
blockage or debris. Clean the
inlet screens. Refer to the
″Clean the Inlet Screens″
section in the Valve
Homeowners Guide.
B. Cold water supply failure. B. Reinstate the cold water
supply.
C. Safety circuit may require
resetting. C. Press the [Power Icon] once,
the display will show ″SEt;″
press the [Power Icon] again
to turn the system OFF;
resume use of the system as
usual. If the fault reoccurs,
contact your Kohler Co.
Authorized Service
Representative.
D. Thermistor is damaged. D. Replace the thermistor.
Contact your Kohler Co.
Authorized Service
Representative.
E. Valve circuit board is
damaged. E. Replace the valve circuit
board. Contact your Kohler
Co. Authorized Service
Representative.
1143086-5-E 6 Kohler Co.
Troubleshooting (cont.)
Error Code Diagnosis
Error Code Error Description Possible Cause Corrective Action
36 Safety relay fault or
thermistor. A. Safety circuit may require
resetting. A. Unplug the valve power cord
from the electrical outlet; wait
10 seconds; plug the valve
back in; resume use as usual.
If the fault reoccurs, contact
your Kohler Co. Authorized
Service Representative.
B. Thermistor is damaged. B. Replace the thermistor.
Contact your Kohler Co.
Authorized Service
Representative.
C. Valve circuit board is
damaged. C. Replace the valve circuit
board. Contact your Kohler
Co. Authorized Service
Representative.
All Other
Codes A fault has occurred
on the valve circuit
board.
A. Memory requires resetting. A. Unplug the valve power cord
from the electrical outlet; wait
10 seconds; plug the valve
back in; resume use as usual.
B. If the symptom has not
been rectified by resetting
the memory, the valve
circuit board is damaged.
B. Replace the valve circuit
board. Contact your Kohler
Co. Authorized Service
Representative.
Kohler Co. 7 1143086-5-E
Clean the Inlet Screens
Disconnect the power and turn off the water supply.
Unthread the plastic nuts from the hot and cold inlets.
Remove the copper tubes. The O-ring and screen may be attached to the end of the tube.
If the screen remains in the check valve, use a small flat-blade screwdriver to gently pull the check
valve from the valve inlets.
Remove the screens from the copper tubes or check valves.
Clean the screens to remove any dirt or debris.
Rinse or replace the check valves and screens.
Reassemble the inlet connections.
Screen
Nut
Copper Tube
Check Valve
Seal
O-Ring
Boot
Split Boot
1143086-5-E 8 Kohler Co.
Remove/Reinstall the Interface
Use the tool to unlatch the bottom of the interface; gently tilt the interface out and slide up to
remove.
Apply grease (provided) in both ends of the coupler.
Connect the cables to the coupler.
Reinstall the interface.
Kohler Co. 9 1143086-5-E
Service Parts
O-Ring
1143469**
1143075
Interface
1143470**
Wall Mount
1143087
Cable
**Finish/color code must be specified when ordering.
1143469**
Interface
1168075
Tool
Clip
1173237
1143086-5-E 10 Kohler Co.
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