Dometic Fan-Tastic Vent 2
Official technical documentation and workshop diagnostics for Dometic Fan-Tastic Vent 2.
Technical Specifications
ElectricalInstaller supplies a 15 A fuse. Black wire = positive and fused, White wire = negative or ground.
Gas Or PressureNot applicable
Capacities DimensionsNight light mode up to 50 lm; Room light mode up to 1600 lm.
Master Troubleshooting & Diagnostics Matrix
| Error Code / Indicator | Symptom / Meaning | Step-by-Step DIY Fix | Suggested Actions |
|---|---|---|---|
N/A | E1 Loss of communication with AC thermostat Possible Cause: Communication failure between vent control board and AC thermostat. | Check wiring connections and clear error code by pressing and holding settings buttons simultaneously. | DIY Safe |
N/A | E2 Thermistor error – no connection / E3 Thermistor error – short circuit Possible Cause: Faulty thermistor wiring, loose connection, or short circuit. | Inspect thermistor wiring and connections, replace if damaged. | DIY Safe |
N/A | E4 Bluetooth loss – remote / E5 Bluetooth loss – mobile application Possible Cause: Wireless connection dropped or out of range. | Re-establish Bluetooth pairing mode by long pressing pairing buttons simultaneously. | DIY Safe |
N/A | E6 Rain sensor over – activation Possible Cause: Rain sensor continuously triggered or shorted by moisture. | Inspect rain sensor surface, dry thoroughly, and test activation. | DIY Safe |
N/A | E7 High temperature at control board Possible Cause: Control board overheating due to excessive ambient temperature or restricted airflow. | Ensure proper ventilation around the control unit and allow the unit to cool. | DIY Safe |
N/A | E8 Lift motor error – no current / E9 Lift motor overcurrent Possible Cause: Dome mechanism is jammed, obstructed, or lift motor has electrical fault. | Check dome lid for physical obstructions or debris, clear track, and inspect motor current draw. | DIY Safe |
N/A | E10 Motion sensor failure Possible Cause: Motion sensor hardware failure or obstruction (Platinum models). | Check sensor lens for dirt or blockage, reset unit power. | DIY Safe |
N/A | E11 Fan driver error / E15 Fan control error / E16 Fan overtemperature / E17 Fan locked motor / E18 Fan phase lost / E19 Fan communication error Possible Cause: Fan motor failure, mechanical binding of fan blades, or electronic driver fault. | Inspect fan blades for physical blockage or binding. Clear error code or replace fan assembly if driver is faulty. | DIY Check / Tech Fallback |
N/A | E12 Fan critical overvoltage / E13 Fan overvoltage / E21 Overvoltage Possible Cause: System supply voltage exceeds operating thresholds. | Check motorhome electrical system and converter output voltage. | DIY Safe |
N/A | E14 Fan undervoltage / E20 Undervoltage Possible Cause: Low system voltage supply. | Check battery charge status and input power connections. | DIY Safe |