Safety shutdown

Timer for fault messages

The control only reacts to a sensor failure after 10 minutes. Wait 10 minutes after acknowledging a temperature sensor error and then check the temperature value for plausibility. Inform your specialist installer if the error is still present.

Supply air temperatures too low

If the supply air temperature falls to 5 °C, the ventilation unit shuts down completely for reasons of safety. The fault message Supply air T too cold is displayed on the RLS T2 WS. All 3 LEDs flash on the RLS 1 WR. If the supply air temperature again increases to at least 10 °C, the ventilation unit starts up automatically.

Exhaust air temperatures too low

If the exhaust air temperature falls below 12 °C, the ventilation unit shuts down to prevent rapid, unwanted cooling of the building. If this happens, there is a malfunction in the external heating system.