Raypak
Flame Proving Intermittent / Nuisance Lockout
Boiler starts then shuts down after a few seconds; may retry several times without showing a code.
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Safety Warning
This repair may involve working with high voltage components or water connections. Always unplug the appliance before removing any panels.
If you are not confident in your ability to perform this repair safely, we strongly recommend contacting a professional technician.
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Possible Causes
Dirty or mispositioned flame sensor, Poor burner ground connection, Low gas pressure causing weak flame, Electrical noise affecting flame signal
How to Fix / Troubleshooting
Safety: Turn OFF power and gas.
Steps:
- Clean the flame sensor with fine abrasive pad and ensure it is properly positioned in the flame.
- Check and tighten ground connections between burner, chassis, and control board.
- Have gas pressure checked by a technician during operation.
If shutdowns continue, the ignition control may need replacement.
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Repair Difficulty
Hard
4/5
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