Transmission failure? No panic!
We are here to help. Whether you have a maintenance agreement with us or not.
In case of an emergency dial the number below and leave a voice message. If you have concluded a maintance agreement with us, you can enter the code after the prompt. Our on-call staff will be alerted immediately (also outside office hours).
Without maintenance agreement and accordingly without code, you may leave us your fault report on the alerting system. Our on-call staff will be notified immediately during office hours but outside office hours, messages are only intercepted at irregular intervals.
Emergency number: 041 752 09 41
Please complete the following PDF form and send it to Sumatronic
(applies only to customers without a valid maintenance contract)