Vemer Chronos 230 Bianco User Manual page 31

Emergency regulation (for heating mode only)
The chronothermostat 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
chronothermostat activates the load for 10 minutes every 4 hours. The display shows
the writing on field (7).
In case of time loss (because of depleted batteries or blackout of a duration higher
than the charge reserve) the chronothermostat 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 chronothermostat 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.
TIMINGS: WHAT THEY ARE
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CHRONOS Chronothermostat User Manual