Orbis Chronos Manual Del Usuario página 63

The instrument performs a regulation of emergency if an error occurs during the
reading of the probe or in case of time loss.
In case of probe error, if the antifreeze function is not deactivated, the instrument
activates the load for 10 minutes every 4 hours. The display shows the writing Err on
field .
In case of time loss (because of depleted batteries or blackout of a duration higher
than the charge reserve) the instrument restarts from the off mode, adjusting on the
basis of the antifreeze temperature, if it hasn't been deactivated before. Reset date/
time to go back to the normal operation (programs modifications and settings remain
memorized).
Timings allow to maintain the current operation (automatic, manual, off) for a certain
period (times or days) and once passed the programmable thermostat changes the
operating mode, as explained below.
The timed operations are the following:
Timed automatic
If in automatic status you set a timing, such off status will be maintained until the end
of the timing; operation will then switched to off mode.
Timed manual
If in manual status you set a timing, such off status will be maintained until the end of
the timing; operation will then switched to automatic mode.
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CHRONOS Programmable Thermostat User Manual