Siemens SINAMICS V20 VFD
Siemens SINAMICS V20 VFD code A936: PID autotuning active
The proportional integral derivative autotuning process is currently running, which keeps the drive busy before normal booth operation begins.
- Code
- A936
- Name
- PID autotuning active
- Controller
- Siemens SINAMICS V20 VFD
- Type
- General fault
- What it does
- Warning: the equipment keeps running and flags a problem
- Risk
- GREEN In your wheelhouse
- Reset
- Clears on its own when the condition goes away
- 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 1 common cause listed for this code
- Booking a live video call with Ben, a master booth technician ($250/hr, paid per call)
Questions about this code
What does Siemens SINAMICS V20 VFD code A936 mean?
The proportional integral derivative autotuning process is currently running, which keeps the drive busy before normal booth operation begins.
Is Siemens SINAMICS V20 VFD code A936 dangerous?
It is graded green: in a working tech's wheelhouse with standard tools and low risk.
How do I fix Siemens SINAMICS V20 VFD code A936?
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 Siemens SINAMICS V20 VFD codes
A921 · Analog output parameters not set properlA922 · No load applied to converterA923 · Both JOG left and JOG right are requesteA930 · Cavitation protection warnA952 · Load monitoring warningF100 · Watchdog resetF101 · Stack overflowF200 · Script errorF221 · PID feedback below minimum valueF222 · PID feedback above maximum value