Danfoss VLT HVAC Drive FC 102
Danfoss VLT HVAC Drive FC 102 code 201: Fire Mode was Active
The drive indicates that it had previously entered emergency fire mode during a past event.
Safety first. This code involves a gas, flame or electrical hazard. Do not keep resetting it. Leave burner, gas train and high voltage work to a qualified technician. WERCS answers 24/7 at (877) 489-3727.
- Code
- 201
- Name
- Fire Mode was Active
- Controller
- Danfoss VLT HVAC Drive FC 102
- Type
- Fire
- What it does
- Critical alarm
- Risk
- RED Specialist territory
- 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 201 mean?
The drive indicates that it had previously entered emergency fire mode during a past event.
Is Danfoss VLT HVAC Drive FC 102 code 201 dangerous?
It is graded red, specialist territory: it involves a burner, gas, flame or safety lockout, so leave the repair to a qualified technician.
How do I fix Danfoss VLT HVAC Drive FC 102 code 201?
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
96 · Start delayed97 · Stop delayed98 · Clock fault200 · Fire mode202 · Fire mode limits exceeded203 · Missing motor204 · Locked rotor250 · New spare part251 · New type code
All 73 Danfoss VLT HVAC Drive FC 102 codes · Every fault code