Alarm code: 3003
ECUL communication fault, expantion board
Description
his unit is an accessory. The alarm code is showing that the communication between the ventialtion unit and the accessory is poor or missing.
Instructions
- Try to reset the alarm following the procedure described for the Flexit GO app or control panel, dependant on which device you are using.
- In case this action doesn’t solve your problem, please contact your service partner.