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P a g e
Soft Alarms: The following remaining errors give a 15 second audible chirp only
System Display
Problem
Resolution
The module indicated is
no longer communicat-
ing to with the system.
Ensure all modules are
connected properly to the
system and to each other.
Modules can be tested
individually by plugging in
one at a time and cycling
power to the system.
Replace any module that is
not detected when plugged
directly into the controller.
Refer to flow meter manual for detailed
troubleshooting
Warning: After any hard alarm, the home or facility should be disinfected. Follow the steps
under the “System Disinfection” heading.
Temperature Management Devices
Your LIGHTWAVE UV system is designed to run continuously to ensure optimal disinfection.
However, during periods when no water is drawn through the system, the energy from the
disinfection process can cause the temperature of the water inside the chamber to rise. In
extreme situations elevated water temperature or the fluctuation in temperature can lower the
output of the UV lamp. In these cases, or if the elevated water temperature is a nuisance,
LIGHTWAVE recommends one of the following forms of temperature management devices.
Cooling Fan
Designed for use on High Output systems, the fan runs continuously to cool the
water by forced convection. The long-life fan is powered independently using a
compact modular power adapter that operates from 90-265V (47-63Hz). Order PN
LTW-130014
Temperature Relief Valve (TRV)
On reaching a higher temperature, the TRV is designed to drain a small amount of
water to allow fresh, cooler water to enter the system. The TRV works without power
and comes complete with 10’ of drain line. Order PN LTW-TRV10
Boil Water Advisory: If any failure occurs on a LIGHTWAVE UV system, the water
must not be used for human consumption until the system is returned to a safe
operational mode. If the water is used for human consumption during this period,
the water must be boiled (minimum 20 minutes at a full boil) prior to consumption.
