Rheem Furnace 11
Flame sensor fault
What This 11 Means
Rheem 11 = Flame sensor fault
What Causes 11
- Dirty sensor
- Bad connection
- Sensor cracked
- Control board issue
Technician First-Check
- Clean sensor
- Check connections
- Inspect for damage
- Test board
Suspected Parts for First-Time Fix
🔧 Flame sensor
$40-80, 15 min)
🔧 Control board
$200-400, 30 min)
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