The Danfoss VLT Micro Drive upgrade for the Voyager 2 and Voyager 3 CFMB does not come programmed since it does not ship through a Trane factory. Following the programming steps in the instructions is obviously important, but is commonly the issue the VFD will not run.
When programming the 13-** parameters, it may seem like some of the parameters repeat, but in reality, you are setting different pieces (the comparator) of each parameter:
Since the VFD does not have a hard wired start/stop (the CFMB did not either), the VFD uses the 2-10 vdc speed command to start and stop the VFD, the 13-** parameters are what set this up
Click the image below for a YouTube link below to the Trane Commercial Education and Training page for a video on the physical installation and programming for the Danfoss VLT Micro Drive.
Click here for a download of the most current version of the kit instructions → Installation Instructions Danfoss VLT Micro Drive For Voyager™ 2 and Voyager™ 3 Units with Modulating Gas Heat
See the bottom of the page for the Danfoss literature for the FC51 VFD and Danfoss quick start guides. Note, these are for reference only and the parameters in the Trane Installation Instructions are what should be followed.
WARNING:
Information in this article is intended for use by individuals possessing adequate backgrounds of electrical and mechanical experience and who comply with all federal, state, and local laws, rules, orders, or regulations related to the installation, service, or repair of a heating or central air conditioning product. Any attempt to install, service, or repair a heating or central air conditioning product may result in personal injury and/or property damage. The manufacturer or seller cannot be responsible for the interpretation of the information contained herein, nor can it assume any liability in connection with its use.