Fireye NX6300 F10 during pilot ignition, no spark: what to check?
My Fireye NX6300 is faulting F10 during pilot ignition (status x11-x12) on our industrial burner. I'm not seeing any spark through the sight glass. What should I check first?
A Fireye NX6300 F10 fault indicates that the flame detector did not register a flame when expected. When this occurs during pilot ignition (status x11-x12) and there's no visible spark, the most likely cause is a problem with the pilot ignition system itself. This prevents the pilot flame from establishing, leading to the F10 lockout.
Likely causes and checks
1No pilot flame at ignition
- Points to it
- The controller requires a flame during the pilot ignition sequence. If there is no spark, the pilot flame cannot ignite, causing the F10 fault.
- Check
- Observe a start with a qualified technician to confirm the presence of spark, pilot flame, and the flame signal on the overview screen.
2Pilot gas pressure or regulator issues
- Points to it
- Even if spark is present, a weak or absent pilot flame due to insufficient gas pressure or a faulty regulator will prevent successful pilot ignition and trigger an F10 fault.
- Check
- Read the pilot gas pressure during the trial for ignition and confirm that the pilot valve opens correctly.
3Flame present but not seen by detector
- Points to it
- If a flame is actually present but the detector is not registering it, the NX6300 will report an F10 fault. This can be due to issues with the detector itself or its connection.
- Check
- Check the scanner wiring, lens, and sighting. Compare the current flame signal with historical readings from earlier successful starts.
Next check: Given no visible spark, the immediate next step is to observe a start with a qualified technician to verify the spark, pilot flame, and the flame signal on the overview screen of the NX6300.
Related questions
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