Signature SRB3200A+XDN Instructions D'utilisation page 49

OK
If the indicator of temperature turns WHITE, this means
that the temperature is too high; in this case, increase
the refrigerator temperature control setting and wait
for 12 hours before performing a new visual inspection
of the indicator.
When fresh food has been introduced or the door has
been left open, it is possible for the indicator of
temperature to turn WHITE after a while.
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