Troubleshooting can be carried out in whole or in part using these instructions. It is important that you only carry out troubleshooting where you have sufficient knowledge and experience, especially when troubleshooting where the unit is live. Acetec accepts no responsibility for personal injury or damage to property during troubleshooting in accordance with these instructions.
Alarm 4 Supply air sensor, flashing 4 on the control panel:
- Switch off the power supply to the unit.
- Check that the supply air sensor is positioned in the supply air duct.
- Check the sensor cable for damage between the sensor and the unit.
- Check the connection and stripping on terminals 34–35; press the orange button to release the cable; check that the stripped length is approximately 7–10 mm; twist the ends together; press the orange button and reattach the cable.