HYDROCAL 1001+ Installation and operation manual
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4.3.2.2.
Update of Firmware - Downloader
Once a firmware download operation is started during the boot sequence, the unit switches to a spe-
cial mode - the so called downloader. This status can be recognized by the following special LED
pattern (2 red LEDs are turned on and 1 green LED is circulating counter clockwise):
a
a
A firmware download operation being in progress is indicated by the following special LED pattern (3
red LED are turned on and 1 green LED is circulating clockwise):
a
a