Danfoss VLT HVAC Drive FC 102
Danfoss VLT HVAC Drive FC 102 code 17: Control word timeout
There is no communication to the adjustable frequency drive, which stops the drive from operating.
- Code
- 17
- Name
- Control word timeout
- Controller
- Danfoss VLT HVAC Drive FC 102
- Type
- Communication
- What it does
- Fault: the equipment trips and stops
- Risk
- YELLOW Booth plays by its own rules
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated November 4, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- What the manual says to do, and the page it is on
- The step by step check for this problem, one check at a time
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Danfoss VLT HVAC Drive FC 102 code 17 mean?
There is no communication to the adjustable frequency drive, which stops the drive from operating.
Is Danfoss VLT HVAC Drive FC 102 code 17 dangerous?
It is graded yellow: not hard, but a booth does it differently than the gear most techs know, so follow the checks in order.
How do I fix Danfoss VLT HVAC Drive FC 102 code 17?
The manual's fix and the step by step check for this code are in WERCS Diagnose, plans from $49 a month. For help right now, WERCS answers 24/7 at (877) 489-3727.
Other Danfoss VLT HVAC Drive FC 102 codes
13 · Overcurrent14 · Ground fault15 · Hardware mismatch16 · Short-circuit18 · Start failed23 · Internal fan fault24 · External fan fault25 · Brake resistor short-circuit26 · Brake resistor power limit27 · Brake chopper fault
All 73 Danfoss VLT HVAC Drive FC 102 codes · Every fault code