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Weishaupt W-FM 200 Combustion Manager

Weishaupt W-FM 200 Combustion Manager code 2B: Loc.c 2B / Err.c 2B

The flue gas recirculation air pressure switch sent an impermissible ON signal, which locks out the burner.

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
2B
Name
Loc.c 2B / Err.c 2B
Controller
Weishaupt W-FM 200 Combustion Manager
Type
Air pressure
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
  • 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)
Unlock the fix · plans from $49/moCall 24/7 (877) 489-3727

Questions about this code

What does Weishaupt W-FM 200 Combustion Manager code 2B mean?

The flue gas recirculation air pressure switch sent an impermissible ON signal, which locks out the burner.

Is Weishaupt W-FM 200 Combustion Manager code 2B 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 Weishaupt W-FM 200 Combustion Manager code 2B?

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 Weishaupt W-FM 200 Combustion Manager codes

27 · Loc.c 27 / Err.c 2728 · Loc.c 28 / Err.c 2829 · Loc.c 29 / Err.c 292A · Loc.c 2A / Err.c 2A2C · Loc.c 2C / Err.c 2C2D · Loc.c 2D / Err.c 2D2E · Loc.c 2E / Err.c 2E2F · Loc.c 2F / Err.c 2F30 · Loc.c 30 / Err.c 3031 · Loc.c 31 / Err.c 31

All 16 Weishaupt W-FM 200 Combustion Manager codes · Every fault code