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. If the error is still present, notify your specialist installer.

Supply air temperatures too low

If the supply air temperature falls by ≤ 5 °C, the ventilation unit shuts down completely for safety reasons. The T-supply air too cold fault message is displayed on the control unit. On the single control unit, all 3 LEDs flash. If the supply air temperature again increases to at 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. After a malfunction: Unit continues to run if temperature is above 12 °C. If the error is acknowledged, the unit continues to run for 10 minutes. After that, it switches off.