What are the reasons that cause the burner to lock after starting?
What are the reasons that cause the burner to lock after starting?
1. The air pressure switch has not been adjusted properly or is damaged, and needs to be adjusted or replaced.
2. The pressure switch pressure tube is clogged and needs to be cleaned.
3. The burner back pressure is too high, and it needs to be checked whether the flue is blocked.
4. The flame detection circuit is faulty, and a new control box needs to be replaced.
5. The fan is dirty and needs to be cleaned.