Industrial Scientific Radius BZ1 Area Monitor
Industrial Scientific Radius BZ1 Area Monitor LEL-Low O2
The oxygen concentration is insufficient for the combustible gas sensor, causing it to lose functionality.
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
- LEL-Low O2
- Name
- LEL-Low O2
- Controller
- Industrial Scientific Radius BZ1 Area Monitor
- Type
- Sensor fault
- What it does
- Warning: the equipment keeps running and flags a problem
- 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
- Which manufacturer manual it comes from, linked
- The 1 common cause 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)
Questions about this code
What does Industrial Scientific Radius BZ1 Area Monitor LEL-Low O2 mean?
The oxygen concentration is insufficient for the combustible gas sensor, causing it to lose functionality.
Is Industrial Scientific Radius BZ1 Area Monitor LEL-Low O2 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 Industrial Scientific Radius BZ1 Area Monitor LEL-Low O2?
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 Industrial Scientific Radius BZ1 Area Monitor codes
MAN DOWN · Peer man downPeer Lost · Peer Lost WarningAlarms off · Alarms offGroup Lost · Group Lost WarningLow battery · Low battery warningNo GPS Signal · No GPS SignalLow Battery Shutdown · Critical low battery
All 15 Industrial Scientific Radius BZ1 Area Monitor codes · Every fault code