If you are interested in a Mini-Split and VRF company committed to your success, you need to talk to TOSOT. TOSOT, an established brand in Canada, is extending its reach into the United States.


Monday - Friday: 10am to 6pm Saturday: 10am to 2pm Sunday: Closed


5965 chemin de la cote de liesse Montréal, QC H4T 1C3 +1 438-792-1956 info@tosotusa.com


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Disclaimers: The information regarding error codes and possible corrective measures provided hereafter is intended to be used as a guideline only.

The diagnosis provided herein may be incomplete and therefore should not be relied upon as being completely accurate. Further information can be found at the respective service manual for each system. You are advised to contact your local Tosot supplier for further assistance.

There are no warranties expressed or implied by use of this diagnostic tool. NO OTHER WARRANTIES ARE MADE BY Tosot AC (Americas), Inc. THROUGH THE USE OF THIS DIAGNOSTIC TOOL. ALL DATA OR INFORMATION PROVIDED HEREIN IS PROVIDED "AS IS."

Tosot AC will have no liability to anyone for any of the following reasons: if modifications, repairs or service are made to the Product by unauthorized or unqualified persons; the Product is not installed, operated or maintained and serviced in compliance with the printed instructions and recommendations of Tosot AC; the Product is not installed, commissioned, operated and serviced in compliance with Tosot AC's recommended procedures and with applicable building, mechanical, plumbing and electrical codes and in accordance with best industry standards and practice.

Tosot's Dr. Tosot Diagnosis Tool is subject to continuous improvement. Tosot reserves the right to modify, update, and include additional information to this diagnostic tool without notice and without incurring any obligations.