Boiler burner ignition faults are typically caused by ignition system anomalies, fuel supply issues, or improper air-to-fuel ratios. When troubleshooting, refer to the alarm codes displayed on the control panel and proceed with the following steps:
1. Ignition Electrodes and Transformer (No Spark / Weak Spark)
Carbon Buildup or Contamination: Carbon residue or oil deposits lodged within the ignition electrode gap can lead to insulation damage or electrical leakage. Solution: Use specialized ceramic tools to remove carbon deposits and clean the electrodes.
Improper Electrode Gap: An electrode gap that is either too wide or too narrow will fail to generate an effective arc. Solution: Adjust the electrode gap to the standard range (typically 3–5 mm).
High-Voltage Cable or Transformer Fault: The high-voltage cable is damaged, causing a short circuit to ground, or the ignition transformer has burned out. Solution: Inspect the wiring; replace the ignition transformer or high-voltage cable if necessary.
2. Fuel and Valve System (Spark Present, but No Ignition)
Abnormal Gas/Oil Pressure: The gas or oil supply pressure is either too low or too high, resulting in an incorrect fuel-air mixture concentration. Solution: Inspect the pressure regulator and filters to ensure the pressure meets the equipment's rated specifications.
Solenoid Valve Fault: The solenoid valve coil is damaged, aged, or clogged with debris, preventing it from opening properly to inject fuel. Solution: Test the resistance of the solenoid valve coil; clear any internal debris or replace the valve.
Nozzle Clogging (Oil Burners): The nozzle has accumulated deposits or suffered wear, resulting in poor fuel atomization. Solution: Clean or replace the fuel nozzle.
3. Air Damper and Air System (Ignition Occurs, but Flame Extinguishes)
Improper Air Distribution: The air damper opening is too wide, or the air volume setting angle is too small, causing the flame to be blown out or resulting in insufficient oxygen. Solution: Slightly close the air damper to reduce the initial airflow.
Carbon Buildup on Swirl Plate: The ventilation gaps are clogged, leading to poor localized airflow. Solution: Clean the swirl plate. 4. Flame Detection System (Flame extinguishes a few seconds after ignition)
Sensing Rod Fault: The flame detector (photoelectric eye or ionization probe) fails to detect the flame; consequently, the program controller shuts off the oil/gas valve as a safety precaution. Remedy: Clean the surface of the flame detector; if it is aged or worn out, replace it.
Boiler burner ignition faults are typically caused by ignition system anomalies, fuel supply issues, or improper air-to-fuel ratios. When troubleshooting, refer to the alarm codes displayed on the control panel and proceed with the following steps:
1. Ignition Electrodes and Transformer (No Spark / Weak Spark)
Carbon Buildup or Contamination: Carbon residue or oil deposits lodged within the ignition electrode gap can lead to insulation damage or electrical leakage. Solution: Use specialized ceramic tools to remove carbon deposits and clean the electrodes.
Improper Electrode Gap: An electrode gap that is either too wide or too narrow will fail to generate an effective arc. Solution: Adjust the electrode gap to the standard range (typically 3–5 mm).
High-Voltage Cable or Transformer Fault: The high-voltage cable is damaged, causing a short circuit to ground, or the ignition transformer has burned out. Solution: Inspect the wiring; replace the ignition transformer or high-voltage cable if necessary.
2. Fuel and Valve System (Spark Present, but No Ignition)
Abnormal Gas/Oil Pressure: The gas or oil supply pressure is either too low or too high, resulting in an incorrect fuel-air mixture concentration. Solution: Inspect the pressure regulator and filters to ensure the pressure meets the equipment's rated specifications.
Solenoid Valve Fault: The solenoid valve coil is damaged, aged, or clogged with debris, preventing it from opening properly to inject fuel. Solution: Test the resistance of the solenoid valve coil; clear any internal debris or replace the valve.
Nozzle Clogging (Oil Burners): The nozzle has accumulated deposits or suffered wear, resulting in poor fuel atomization. Solution: Clean or replace the fuel nozzle.
3. Air Damper and Air System (Ignition Occurs, but Flame Extinguishes)
Improper Air Distribution: The air damper opening is too wide, or the air volume setting angle is too small, causing the flame to be blown out or resulting in insufficient oxygen. Solution: Slightly close the air damper to reduce the initial airflow.
Carbon Buildup on Swirl Plate: The ventilation gaps are clogged, leading to poor localized airflow. Solution: Clean the swirl plate. 4. Flame Detection System (Flame extinguishes a few seconds after ignition)
Sensing Rod Fault: The flame detector (photoelectric eye or ionization probe) fails to detect the flame; consequently, the program controller shuts off the oil/gas valve as a safety precaution. Remedy: Clean the surface of the flame detector; if it is aged or worn out, replace it.