What is going on when the burner ignites and there is no arc?

What is going on when the burner ignites and there is no arc?

1. The ignition transformer is damaged, or the high-voltage wire connected to the ignition electrode is broken or the plug is loose;

2. The porcelain rod of the ignition electrode is broken, or the position of the ignition electrode is incorrect;

3. The accumulation of dirt near the ignition electrode constitutes a short circuit;

4. The control box has no voltage supply to the ignition transformer;

5. The power wiring of the ignition transformer is loose;

6. It may be that the sponge filter of the air filter is clogged, causing the electromagnetic air valve to not open. Take it out and remove the dust.