LYNC UV-H
SECTION 6: TROUBLESHOOTING
•
•
•
SECTION 6: TROUBLESHOOTING
The UV-H will operate unattended until a fault arises.
If an alarm occurs, the solenoid valve (optional) will close, preventing water from flowing; the LED turns
red; the audio alarm will beep continuously; the touchscreen turns red and displays a message; the RUN
contact will open to indicate the unit is no longer treating. The fault should be corrected to return the
unit to normal operation and have the water flow again.
If a warning occurs, the solenoid valve (optional) remains open; the LED flashes red; the audio alarm will
beep once; the screen turns yellow and displays a message; the warning contact will close to indicate
the unit is still treating but in an abnormal state. The warning should be addressed as soon as possible
and if left unattended, could turn into an alarm.
The Message History, available in the Settings menu, item 2.6, is very useful in troubleshooting since it
contains up to 100 messages/events with associated recorded data such as times, UVI, UVT, UV sensor
values, and temperatures.
In the event of an alarm, in many cases, a physical inspection of the unit with the power off should be
done to try to identify a cause. A slow water leak for instance, near the top of the unit could stain lamps
or reflectors and may not be uncovered without a full system inspection.
Dose Alarm
The Dose Alarm occurs when there is insufficient UV dose to treat the maximum flow rate prescribed by
the unit. The Dose Alarm could be a result of low UV intensity or low UV Transmittance (UVT) or a
combination of both. Review both values in the System Info Menu to determine which is causing the
alarm and take corrective action. It is highly recommended to have a UVT sample taken to confirm
system prediction.
The Advanced Settings menu under Force Outputs conveniently provides the ability to manually turn on
and off devices to confirm their operation. Devices return back to their automatic position after 10
minutes.
Cycling the power is also useful to occasionally reset the software.
