ID Symptom Description Possible Causes Actions & Solution
OS3
When the system is plugged
into the power outlet, the
over/under temperature
indicator is illuminated in
ashing red.
The system temperature
is high (over-temperature
condition).
Make sure the system is used in the
recommended temperature range. Check
whether the vents are blocked. Unblock vents
if necessary.
Check lters. call service to clean or replace if
necessary.
NOTE: Once the air vents are unblocked, the
fan will continue to run to cool the LED module.
Once the LED module cools, the over/under
temperature indicator will also turn o and the
standby/on indicator will illuminate green. This
process may take several minutes.
OS4
The system generates
low light output (less than
27 µW · cm
-2
· nm
-1
on
average).
Protective cover of light
shade is dirty
Clean the cover gently using cleaning solution
and a lint-free wipe.
Wrong light meter is
used for light output
measurement.
Make sure that the recommended light meter
is used for light output measurement.
The light shade is farther
than 38 cm (15”) from the
bed surface or not directly
aimed at it.
Focus the therapeutic light such that the spot
diameter is 35.5 cm (14”) or the shade is 38
cm (15”) from the bed surface, and the light is
aiming at the the bed surface.
28
Chapter 4: Operator Troubleshooting
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