Dometic • Roof Light / Roof Window

Dometic Midi Heki

Official technical documentation and workshop diagnostics for Midi Heki.

Technical Specifications

Electrical12V DC, 10 A plane fuse
Gas Or PressureNot applicable
Capacities DimensionsMaximum opening angle approx. 70°, Maximum allowable driving speed 160 km/h

Master Troubleshooting & Diagnostics Matrix

Error Code / IndicatorSymptom / MeaningStep-by-Step DIY FixSuggested Actions
N/A
The roof light does not close completely.
Possible Cause: Dirt between the glass and frame, or leaves and twigs trapped.
Clean the window and remove any leaves and twigs between the glass and frame.DIY Safe
N/A
The flyscreen or blackout roller blind cannot be moved.
Possible Cause: Dirt on the side guides.
Clean the side guides.DIY Safe
N/A
The roof light does not open or close (Electric version).
Possible Cause: Vehicle's power supply to the roof light is interrupted, fuse is faulty, rocker switch is defective, or electric motor is defective.
Check the power supply, replace the 10 A plane fuse if faulty, or contact a specialist workshop if the switch or motor is defective.DIY Check / Tech Fallback
N/A
The roof light does not open or close (Electric version)
Possible Cause: The vehicle's power supply to the roof light is interrupted, the fuse is faulty, the rocker switch is defective, or the electric motor is defective
Check the power supply; replace the faulty 10 A fuse; if the rocker switch or electric motor is defective, contact a specialist workshop.DIY Check / Tech Fallback
N/A
The electric roof light does not open or close.
Possible Cause: Interrupted power supply, blown fuse, defective rocker switch, or defective electric motor.
Check the vehicle's power supply; replace the 10 A flat fuse if faulty; consult a specialist workshop for a defective switch or motor.DIY Check / Tech Fallback
N/A
No specific operational failures detailed in technical text
Possible Cause: Installation or sealing failure if instructions are not followed
Use recommended sealants and strictly observe adhesive manufacturer preparation instructionsDIY Safe
N/A
[12V DC] The electric roof light does not open or close.
Possible Cause: Power supply interrupted, blown fuse, defective rocker switch, or defective electric motor.
Check the vehicle's power supply; replace the 10 A fuse if faulty; consult a specialist workshop for switch or motor failure.DIY Check / Tech Fallback