Errors – causes and corrective measures

The measuring tool has been subjected to extreme fluctuations in temperature and did not have sufficient time to adjust.

The ambient temperature is too high or too low for the measuring tool to operate.

The indicator flashes if the surface temperature of the object being measured in the measuring area is too high (above 500 °C, see indicator (g)) or too low (below −30 °C, see indicator (f)). The temperature of this object cannot be measured. Aim the laser at another object and start a new measurement.

If the measuring tool has an internal fault, Err is shown on the display and the (i) symbol flashes. To reset the software, remove the batteries, wait a few seconds and then reinsert the batteries.

If the error persists, have the measuring tool checked by a Bosch customer service agent. Do not open the measuring tool yourself.