Danstoker Pre-purge Only / No Ignition Sequence

Danstoker boiler burner fan runs but burner does not progress to ignition; no flame attempt.

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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

Open safety interlock in burner circuit, Faulty burner control timing, Gas valve not energized, Incorrect wiring between Danstoker controller and burner

How to Fix / Troubleshooting

Safety: Follow burner and Danstoker safety procedures. Isolate power and fuel before wiring checks.

  • Observe sequence: Watch the burner control LEDs to see at which step the sequence stops.
  • Check safety loop: Verify all burner safety devices (pressure switches, thermostats) are closed.
  • Verify valve operation: Confirm that gas/oil valves receive power at the correct time. If not, check wiring from the burner control.
  • Controller interlock: Ensure the Danstoker controller is providing the correct enable signal to the burner.

If the sequence logic is faulty, the burner control box may need replacement by a burner technician.

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Repair Difficulty

Hard 4/5

Required Part

Burner Management Controller
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