Simu T5, T6 DMI Tubular Motor Repair – Specialist Workshop for Roller Doors & Roller Shutters with Emergency Hand Crank (NHK)
 
Your Simu tubular motor says:
“I am the motor that never gives up – even when the power goes out.”
“With my integrated emergency hand crank, I stay reliable and movable – at Thomas Reh, I regained the strength to move doors and shutters safely again.”
 
The reliable SIMU motor with emergency hand crank
The DMI series T5 DMI and T6 DMI are among the most robust drives from SIMU, a brand of the Somfy Group. They are designed for roller doors, roller shutters and industrial door systems where safety and reliability are top priority. The integrated emergency hand crank (NHK) allows manual operation even during power outages – a crucial advantage for commercial installations and private garages.
These motors are mechanically very durable and can usually be repaired economically. A professional overhaul restores full function, torque and safety mechanisms – without the need for a costly new installation.
 
Advantages compared to purchasing a new motor
 
 
Sustainable: Environmentally friendly repair instead of replacement – proven mechanical technology remains in use.
 
 
Cost-efficient: Repair is cheaper than buying a new unit, with no need to modify door controls.
 
 
Manually operable: Thanks to the emergency hand crank, the roller door remains functional even during power outages – without compromising safety.
 
 
Reliable: Mechanical or electronic – robust, long-lasting, and tested for flawless function.
 
 
Compatible: Suitable for roller doors and awnings with NHK, DMI or comparable emergency crank drive systems.

 
This repair covers the following fault patterns
 
 
Roller door opens only partially or requires manual assistance to lift
 
 
Awnings extend but retract only with light manual support
 
 
Motor runs, hums or responds with delay
 
 
Distinct “click” noise when changing direction

 
Repair process
 
 
Order: Select the correct motor model and complete the order.
 
 
Shipping: Send the defective motor properly packed (shipping costs paid by buyer).
Shipping address: Smart Home Thomas Reh, Auenweg 19, 77880 Sasbach, Germany.
 
 
Repair: Professional repair within 1–2 working days.
 
 
Return shipping: Return shipping is possible at normal parcel rates, provided the motor is securely and space-savingly packed. For bulky or insufficient packaging (e.g. long tubes or oversized cartons), additional shipping costs may be charged.

 
Processing & shipping time
 
 
The motor is repaired no later than the next working day after receipt.
 
 
Return shipping usually takes place within the following working day.
 
 
Processing time may vary depending on platform and shipping method; exact details are provided when ordering.

 
Important requirements
 
 
Repair only for selected Simu models (see variants list).
 
 
No repair in case of total damage (e.g. water damage, burnt windings, defective gearbox or brake).
 
 
Motor must not have been opened or tampered with.

 
Product safety and quality
All repairs are carried out according to relevant safety standards and ensure proper functioning of the motor. Changes to house wiring may only be performed by qualified electricians.
 
Service & extras
On request, I offer a loan cable for adjusting or resetting the motor. Please contact me in advance.
 
Warranty
A statutory warranty of 2 years applies exclusively to the installed replacement parts.
No warranty is provided for the entire motor or other components.
 
Sustainability & Second Life
Every repair extends the life of your motor, reduces electronic waste and protects valuable resources.
In our “Second Life” section, you will also find refurbished motors as replacement options.
 
Legal notice
SIMU is a brand of SIMU SAS (Somfy Group). Smart Home Thomas Reh is not affiliated with SIMU SAS or the Somfy Group. The name “SIMU” is used solely to describe the offered service.
Smart Home Thomas Reh is an independent, registered electrical trade workshop. Repairs are carried out exclusively in accordance with applicable craft regulations. Supervisory authority: Handwerkskammer Freiburg, Bismarckallee 6, 79098 Freiburg im Breisgau.
 
Associated reference number on the nameplate:
T6 DMI 80/12:
2000970
T6 DMI 120/12:
2001019