Customer service and contact

Your contact to our

Service experts

Contact us if you have any questions or technical problems.

With our telephone advice and teleservice, you benefit from the expert knowledge of our qualified specialists when diagnosing and rectifying faults. We help you to rectify faults in a targeted manner and as quickly as possible.

Our service hotline for

Troubleshooting

Please have the system number ready for processing. This can be found on the rating plate. Further important information can be found on our“Customer service and contact” page.

Our service times

  • Monday to Thursday: 8 a.m. – 4 p.m.
  • Friday: 8 – 12 o’clock

Additional on-call times

  • Monday to Thursday: 4 – 8 p.m.
  • Friday: 12 – 20 o’clock
  • Saturday: 8 – 12 o’clock

Further important information:

  • When you call, please have the system number, which you can find on the rating plate, to hand to identify your system and enable us to process your questions quickly.
  • Please also note our customer information on service fault acceptance: Fault acceptance (PDF | 209.01 KB | EN )