Siemens LMG Gas Burner Control (Bentone STG)
Siemens LMG Gas Burner Control (Bentone STG) 20 blinks: Red LED: 20 blinks
The burner locks out because the control unit experienced an internal device fault.
Safety first. This code involves a burner or safety lockout. 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
- 20 blinks
- Name
- Red LED: 20 blinks
- Controller
- Siemens LMG Gas Burner Control (Bentone STG)
- Type
- General fault
- What it does
- Lockout: the control shuts down and stays off until it is reset
- Risk
- RED Specialist territory
- Reset
- Needs a manual reset
- Source
- The manufacturer's manual (subscribers see which manual and page)
Updated July 23, 2026
How to fix it
Subscribers get:
- What to do next, in plain words
- Which manufacturer manual it comes from, linked
- The 2 common causes 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 LMG Gas Burner Control (Bentone STG) 20 blinks mean?
The burner locks out because the control unit experienced an internal device fault.
Is Siemens LMG Gas Burner Control (Bentone STG) 20 blinks 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 Siemens LMG Gas Burner Control (Bentone STG) 20 blinks?
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 LMG Gas Burner Control (Bentone STG) codes
2 blinks · Red LED: 2 blinks3 blinks · Red LED: 3 blinks4 blinks · Red LED: 4 blinks5 blinks · Red LED: 5 blinks7 blinks · Red LED: 7 blinks18 blinks · Red LED: 18 blinks19 blinks · Red LED: 19 blinks
All 8 Siemens LMG Gas Burner Control (Bentone STG) codes · Every fault code