19GBOperating manual VRT 340f
- The day/month/year (if the calendar is
activated)
- The timer programmes set for heating
(every single time window per day)
4.7 Changing the battery
The regulator checks the battery
condition itself, and the normal working
life of the battery is approx. 1.5 years.
Approx. 4 weeks before the battery is
fully discharged BATT appears in the
multifunction display of the basic display.
The battery chamber is located on the
back of the regulator.
The regulator must be taken off the wall
plinth to change the battery.
• Carefully push the locking hook to the
side using a screwdriver (Fig. 4.1) and
pull the regulator off towards the
front.
Fig. 4.1 Releasing the locking hook
Operation 4
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