TROUBLESHOOTING GUIDE
Note: Remove Cover from Control Module to check diagnostic lights.
1. PROBLEM:
No water is delivered when Faucet is activated.
INDICATOR:
If no LED lights illuminate:
CAUSE:
No electricity is being supplied to Faucet.
SOLUTION:
Ensure that the main power is turned “ON.” Check all
Transformer, Sensor, Solenoid and Cable Connections. Make
sure that Transformer is supplying 24 VAC (Volts AC). If no
voltage is detected, replace Transformer.
CAUSE:
There is an electrical system malfunction.
SOLUTION:
Reset electrical system. Unplug Sensor Connection.
Disconnect power to circuit for ten (10) seconds. Reconnect.
INDICATOR:
If the GREEN LED illuminates when power is reconnected:
CAUSE:
There is a short in the Sensor.
SOLUTION:
Replace Sensor.
Note: GREEN LED may illuminate immediately after Sensor
disconnection.
CAUSE:
There is a short in the Solenoid or Solenoid Cable.
SOLUTION:
Replace
ETF-370-A
Solenoid.
INDICATOR:
If the GREEN LED does NOT illuminate when power is
reconnected:
CAUSE:
There is an electrical system malfunction.
SOLUTION:
Reset electrical system. Unplug Sensor Connection.
Disconnect power to circuit for ten (10) seconds. Reconnect.
CAUSE:
The Control Module circuit is “dead.”
SOLUTION:
Replace
ETF-450-A
Control Module.
INDICATOR:
If GREEN LED illuminates AND changes to RED when hands are
in the Sensor’s detection zone AND the RED Solenoid LED
illuminates:
CAUSE:
Water supply stop(s) may be partially closed.
SOLUTION:
Open supply stop(s) completely.
CAUSE:
Debris is clogging Solenoid Filter.
SOLUTION:
Shut off water supply. Remove, clean and reinstall Solenoid
Filter.
INDICATOR:
If GREEN LED illuminates AND changes to RED when hands are
placed in the Sensor’s detection zone AND the RED Solenoid
LED flickers with a vibrating/clicking noise heard inside the
module:
CAUSE:
There is a direct short in the Solenoid or Solenoid Cable.
SOLUTION:
Replace with
ETF-370-A
Solenoid.
INDICATOR:
If GREEN/RED LED illuminates AND changes to RED when
hands are NOT located in the Sensor’s detection zone BUT the
RED Solenoid LED (in upper left corner of circuit) does NOT
illuminate:
CAUSE:
Sensor range is set too long and is detecting the sink.
SOLUTION:
Reduce Sensor detection range.
CAUSE:
Sensor is faulty.
SOLUTION:
Replace Sensor.
INDICATOR:
If GREEN LED illuminates BUT does NOT change to RED when
hands are placed in the Sensor’s detection zone:
CAUSE:
Sensor range is set too short.
SOLUTION:
Increase Sensor detection range.
CAUSE:
Sensor is faulty.
SOLUTION:
Replace Sensor.
2. PROBLEM:
Sensing Range is too short.
CAUSE:
Extended Range Sensitivity is required.
SOLUTION:
Dip Switch number 4 should be in the “DOWN” (Extended
Range Sensitivity) position. Increase range by adjusting
Range Potentiometer clockwise (yellow phillips screw in blue
base).
3. PROBLEM: Faucet activates by itself (false triggers).
CAUSE:
Sensor range is set too long.
SOLUTION:
Decrease range by adjusting Range Potentiometer
counterclockwise. If necessary, flip Dip Switch number 4 to
the “UP” (Reduced Range Sensitivity) position. Check
surroundings for factors that contribute to Sensor range
detection problems (bright lights, highly reflective surfaces,
sunlight, etc.).
4. PROBLEM: Faucet delivers very low flow or just a dribble.
CAUSE:
Water supply stop(s) may be partially closed.
SOLUTION:
Open supply stop(s) completely.
CAUSE:
Debris is clogging Solenoid Filter.
SOLUTION:
Shut off water. Remove, clean, and reinstall Solenoid Filter or
replace Solenoid Filter ETF-1009-A.
CAUSE:
Solenoid is worn or faulty.
SOLUTION:
Rebuild with
ETF-1009-A
Solenoid Repair Kit or replace
ETF-
370-A
Solenoid.
CAUSE:
Debris is clogging Faucet Aerator or Spray Head.
SOLUTION:
Shut off water. Remove Aerator or Spray Head (use Key if
required). Clean and reinstall Aerator or Spray Head.
5. PROBLEM: Faucet does not stop delivering water or continues to drip
after user is no longer detected (even after power to the
Module has been disconnected).
CAUSE:
Solenoid Valve is installed backward.
SOLUTION:
Disconnect Solenoid. Reconnect Solenoid with water flow
toward the Faucet (see arrow on Solenoid).
CAUSE:
Debris is clogging Solenoid.
SOLUTION:
Remove and clean Solenoid Operator. If necessary, rebuild
with
ETF-1009-A
Repair Kit.
CAUSE:
Seat in Solenoid Valve body is damaged or pitted.
SOLUTION:
Replace with
ETF-370-A
Solenoid.
7
Summary of Contents for Optima ETF-800
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