Incorrect system time of heating system

Manufacturer: Buderus
Type: Loganagas G_124 Lownox

Description of failure

The system time seems to be not set proper. The rythm between day and night (colder during the night) seems to be shifted.

Failure investigation

The timer element of the heater has an internal battery. The voltage of the battery is 2.3 V. A new battery has a voltage about 3.6 V, so this one is empty and needs to be replaced. It is soldered on the PCB and can be replaced using a soldering iron. After replacing the battery with a new one, date and time must be set, and the heating system work as usual again.

Reichelt order number: LS 14500CNA Size: AA Capacity: 2600 mAh