Encountered a fault? Our technical support teams are here to help
If the event of a fault, you can rely on the CTA service team: 24 hours a day, 365 days a year.
The fault repair process
These are the steps involved, from the occurrence of a problem to fixing it.
Fault repair
Phone numbers to report your technical fault to:
Please have the following information at hand when reporting a fault. The ASS number is particularly important for ensuring your request is handled efficiently.
+41 31 720 10 00 (German)
+41 21 654 99 00 (French)
ASS number (important)
Fault type
Fault code from the unit display
Property address
Invoicing address
How to access the system
Contact person (incl. telephone number)
Important: In the event of breakages or emergencies, it is essential that the incident is reported by telephone +41 31 720 10 00.
(Form submissions are only processed during office hours)
(Form submissions are only processed during office hours)
Frequently asked questions
How much does a fault repair cost?
Our service technicians will always take care of your CTA heat pump, regardless of whether or not you have subscribed to our CTAplus extended warranty. The costs involved for each service are set out below: