Dometic • Roof light with fan

Dometic FanTastic Vent

Official technical documentation and workshop diagnostics for FanTastic Vent.

Technical Specifications

ElectricalOperating Voltage: 12 V DC; Max power consumption: 30 W (Model 7350), 36 W (Models 2250, 3300, 3350, 6350, 7300); Fuse: 4 A glass fuse; Remote control batteries: 2x AA
Gas Or PressureNot applicable
Capacities DimensionsRoof thickness compatibility: Standard for 25 mm and above (spacers required for roofs thinner than 25 mm); Dimensions (W x D x H): 471 x 471 x 190 mm; Weight: 5 kg; Maximum travel speed with closed cover hood: 150 km/h; Noise level: < 40 dB(A); Temperature setting range: 60 – 90 °F / 15 – 33 °C (Thermostat switch range: 22 – 123 °F / -5.5 – 50.5 °C)

Master Troubleshooting & Diagnostics Matrix

Error Code / IndicatorSymptom / MeaningStep-by-Step DIY FixSuggested Actions
N/A
Fan control does not respond or emit a single beep to remote commands
Possible Cause: Command not received by the fan control, remote in standby mode, or depleted batteries
Press any button on the remote to wake it from standby mode, check/replace the 2 AA batteries, or ensure line-of-sight and proximity to the unit.DIY Safe
N/A
Fan motor does not start when switched on
Possible Cause: Cover hood is not sufficiently open (safety switch active), blown fuse, or 12 V power supply interrupted
Ensure the cover hood is fully open (or opened at least 5 cm / 2 inches for thermostat/automatic operation, or 10 cm for model 2250). Check and replace the 4 A fuse located behind the black cap. Verify 12 V DC power supply.DIY Safe
N/A
Cover hood is stuck and will not open
Possible Cause: Seal has dried up due to warm weather causing the cover hood to stick
Open the cover hood completely, clean the underside of the hood and seal with methylated spirits or solvent, apply water-based protective agent (e.g. 303 Protectant), let dry, polish with a soft cloth, and apply an even layer of silicone to the seal. Replace seal if damaged.DIY Safe