ADC AD-410 service manual If not, refer to the Second Visual Check on

c.Three Visual Checks

1)Does the DSI ignitor/flame-probe assembly start sparking? If not, refer to the FIRST VISUAL CHECK on page 35.

2)Does the main burner ignite?

If not, refer to the SECOND VISUAL CHECK on page 36.

3)Does the main burner remain lit after ignition has been established ("FLAME-OUT")? If not, refer to the THIRD VISUAL CHECK on page 37.

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