6700C Series
Sensor Operated Mixing Faucet
Troubleshooting Guide
Normal Operation: When power is connected, the faucet will immediately perform diagnostic function. You
will hear a clicking sound and see lights flash. When the user’s hands are placed under the spout, the light
will flash once and water will start to flow. Water flow will stop when hands are removed. The red indicator
light will flash when the batteries are low.
Turn the manual handle clockwise to increase temperature and counter-clockwise to decrease.
Problem
Possible Cause
To Diagnose
Remedy
Faucet will not turn on:
Water not turned on
Check water supply
Turn water on
Power supply failure
No light, no clicking:
• Check batteries
• Check power adapter
Reinstall or replace batteries/
Replace power adapter
Low battery
Light continues to flash
Replace batteries
Electronic PCB / Sensor is
defective
No light, no clicking:
• Reinsert batteries
• Reattach power adapter
Replace electronic PCB
Solenoid valve is clogged
Solenoid is clicking but no water
is coming out
Clean solenoid
In-line filter is clogged
Open clean-out trap and check
filter screen
Clean or replace filter screen
Solenoid coil is defective
Insert new batteries or reattach
power adapter. Light blinks but
no solenoid is clicking
Replace solenoid coil
Flow control is clogged
Open flow control device and
check
Celan the flow control device
Faucet will not shut off,
has low glow, or drips:
The solenoid valve is normally closed. Turn off water and activate the faucet. If there is a clicking
sound, the solenoid valve is dirty. If there is no clicking sound, then check the solenoid valve. If
the faucet is dripping, clean the solenoid valve.
IMPORTANT: Periodic maintenance is required for smooth and trouble-free operation of this faucet.
For service and inquiry about available repair kits, please call Hydrotek Technical Support at (800) 922-
9883.
Care and Cleaning Instructions:
• WARNING! Using abrasive or chemical cleaners will damage the chrome or decorative finishes.
• Use only soap and water to clean the finish, then wipe dry with a clean cloth.
• If chemical cleaners are used for other parts of the lavatory, ensure that the faucet is protected from
potential contact from those cleaners.
6700C Series
Sensor Operated Mixing Faucet
Troubleshooting Guide
