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| OZO-FLO Troubleshooting Guide
Contents
No water flow / Faucet not functioning ........................................1
Not enough water flow .................................................................2
Too much water flow ....................................................................2
LED’s blinking once per second ....................................................2
LED’s blinking 2x per second........................................................2
LED not working ...........................................................................3
Water stops flowing out when washing hands ...............................3
Water does not shut off ................................................................3
Appendix 1 : Parts Breakdown ......................................................4
No water flow / Faucet not functioning
a. Cycle power by unplugging and plugging in transformer. The blue
LED should blink once during power up. If the LED did not blink
once, make sure green LED is illuminated on the power supply.
If no green LED on power supply, make sure that the GFI has not
tripped and there is power at the plug.
b. If power at the plug is confirmed and the green LED is not shown
on the transformer, replace transformer (ZF120A-2402500-FKC).
c. If transformer has a green LED and the blue light blinks upon
power-up but the faucet will not activate, check that the yellow
sensor wire is connected properly.
d. Activate the faucet by placing your hand in-front of the sensor
(ensure that you are not wearing black silicone gloves as the IR
signal will not bounce back if they are used). When activating
the faucet, you should see the blue light ring illuminate as well
as hear the solenoid valve click. If the blue light and the sole-
noid does not activate, replace PCB (AT00-190). If the blue light
comes on but the solenoid does not click, ensure that both spade
connectors are attached to the solenoid valve. If so, replace
solenoid valve and re-test (AC17-104-6V).
e. If after PCB replacement and solenoid replacement the faucet
still does not function, replace faucet body.
Not enough water flow
a. Ensure control stops are fully open.
b. If using a mixing valve, ensure BOTH the hot and cold water sup-
plies are on. If the cold water supply is not active, the TMV will
shut off or greatly restrict the hot water side as well.
c. Flow rate of ozo-flo is dictated by the outlet of the faucet. Using
a wrench, unscrew the outlet and activate the faucet. This will be
full line pressure. If flow rate (without the outlet) is still low, check
for adequate flow rate prior to the mixing valve.
d. Blockages can occur in inlet screens of the mixing valve as well
as the inlet of the solenoid valve (AC17-104-6V) in the wall housing.
Too much water flow
a. Water flow is controlled by the outlet of the faucet. Ensure that it
is in place.
LED’s blinking once per second
a. This is an indicator that ozone is not being generated.
b. First verify that the blue banded cable is connected between the
PCB and the cable going to the ozone generator.
c. Verify TDS is above 50. Normally the facility maintenance team
would have this checked monthly. If the customer can not deter-
mine this, each rep agency has a small TDS meter that can be
used; otherwise, a handheld programmer (AC01-005) can scan
the system and estimate TDS.
d. If TDS is acceptable and the cable is properly connected, there
must be a break in the electrical connection to the ozone genera-
tor. Replace with item 0075-106745 and re-test.
LED’s blinking 2x per second
a. This is an indication of the ozone generator pulling too much
current from the power supply. This can happen if there is a short
in the ozone generator electrodes or when the water conductivity
(TDS) is too high.
b. First verify that the TDS is below 350. If TDS is above, contact
customer service to obtain a smaller ozone generator.
c. If TDS is in normal range (75-350) remove ozone chamber from
the rear of the sink and inspect the mesh for any debris that
could cause a short in between electrodes.
d. If no short is detected and the error is still occurring, replace with
new ozone generator item 0075-106745.
LED not working
a. Cycle power and observe if LED blinks once during power up.
If LED illuminates then it has been set to 0 intensity using the
handheld programmer AC01-005. Use the programmer to modify
the LED intensity setting.
b. If the LED does not blink once during start-up, replace spout.
TROUBLESHOOTING GUIDE
OZO-FLO models HWF05, HWF23, HWF43
