Danfoss TP5001 Range Instructions D'utilisateur page 14

What happens to the unit when batteries fail
GB
If batteries are not changed within 15 days of a low battery warning,
the unit shuts down. In normal circumstances the thermostat turns off
the valve or the boiler it is controlling. In extreme climates turning off
the heating is likely to result in the building freezing up. To prevent this,
the installer can set up the unit to turn ON rather than turn OFF the
heating on battery failure. This will consume more fuel but will prevent
damage occurring to the building. If appropriate please check that the
installer has set this function correctly.
Please note: If you replace the batteries and the LCD does not come
on immediately please check battery orientation. Do not leave
batteries in the product if the display is not active.
If, after changing the batteries, the screen remains blank it is
necessary to carry out a partial reset. See overleaf for details.
Resetting the unit
Partial reset: Press RESET (used to restart micro-computer) if display
freezes for any reason. This does not reset any programme, clock or
date. It is recommended that this is done at time of installation.
User full reset: Press RESET whilst holding down PROG button. This
resets event times and any User Advanced Programme setting, but
does not reset time or date.
Installer full reset: This is only available to the installer. In addition
to the above all of the Installer Advanced Programming settings are
returned to factory settings, however, time, date and service due date
are not reset.
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