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LIMITED WARRANTY
Y. Stern Engineering Ltd. warrants that its electronic products will be free of defects in
material and workmanship during normal use for two years from the date the product is
purchased.
If a defect is found in normal use, Y. Stern Engineering Ltd. will, at its discretion, repair,
provide a replacement part or product, or make appropriate adjustments. 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 Stern
Engineering Ltd. with all warranty claims.
Stern Engineering Ltd 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
Stern Engineering Ltd. exceed the purchase price of the product.
If you believe that you have a warranty claim, contact your Stern Distributor, Dealer or
Plumbing Contractor. 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.
Y. STERN ENGINEERING AND/OR SELLER DISCLAIM ANY LIABILITY FOR SPECIAL, INCIDENTAL
OR CONSEQUENTIAL DAMAGES. This warranty excludes product damage due to installation
error, incorrect maintenance, wear and tear, battery, product abuse, or product misuse,
whether performed by a contractor, service company, or the consumer. This warranty does
not cover product damage caused by the following:
- Incorrect installation.
- Inversions of supply pipes.
- Pressures or temperatures exceeding recommended limits.
- Improper manipulation, tampering, bad or lapsed maintenance.
- Foreign bodies, dirt or scale introduced by the water supply or sanitizer tank.
- Use of the soap or sanitizer outside of viscosity specifications.
- Alteration of the original soap/foam/sanitizer dispenser components (including pipes).
Failure to adhere to the safety precautions and/or installation recommendations outlined
in this Installation Guide will void the warranty.
* “Security Mode”: If the sensor is covered for more than 90 sec. the faucet will automatically shut off water flow.
To return to normal operation remove any blockage.
** In this case, the water flow will stop anyway after 90 seconds because of the security time.
SOLUTION
CAUSE
INDICATOR
PROBLEM
Replace battery
Low battery.
1. Sensor flashes
continuously
when user’s
hands are within
the sensor’s
range.
No water
coming out
of the faucet:
Increase the range
1. Range is too short.
2. LED in the
sensor does not
flash once when
user’s hands
are within the
sensor’s range.
Decrease the range
2. Range is too long.
The battery must be replaced.
3. Battery is completely used up
4. Unit is in “Security Mode”*
Eliminate cause of reflection.
5. Sensor is picking up reflections from the
washbasin or another object.
Connect the electronic unit
connectors to the solenoid.
1. Connectors between the electronic unit and
solenoid are disconnected.
3. LED in the
sensor flashes
once when
user’s hands
are within the
sensor’s range.
Unscrew solenoid, pull out the
plunger and the spring from
the solenoid and clean them.
Use scale remover material if
needed. When replacing the
plunger, please make sure that
the spring is in vertical position.
2. Debris or scale in solenoid.
Clean the orifice or replace
diaphragm.
3. The central orifice in the diaphragm is
plugged or the diaphragm is torn
Reduce the supply water
pressure.
4. The water supply pressure is higher than
8 bar.
Shut off water supply and
unscrew one of the flexible
pipes in order to reduce the
pressure that blocks the
product.
5. The water supply pressure is under 8 bars
and yet the pressure in the faucet’s body is
higher. This situation could be caused by a
sudden increase in the water supply pressure
that the back check prevents from dropping,
even after water supply pressure drops under
8 bars.
Clean the orifice or replace
diaphragm.
Debris or scale in diaphragm
1. Sensor flashes
once when
user’s hands
are within the
sensor’s range.
Water flow
from spout
does not
stop:
Clean or eliminate case of
interference.
1. Sensor is dirty or covered.**
2. LED in the
sensor does not
flash once when
user’s hands
are within the
sensor’s range.
Decrease the range or eliminate
cause of reflection.
2. Sensor is picking up reflections from the
washbasin or another object.
Remove, clean, re-install
Filter or aerator is clogged
Water flow
diminished
TROUBLESHOOTING
