Reasons and Solutions for Gas Boiler Burner Malfunctions


Reasons and Solutions for Gas Boiler Burner Malfunctions

The burner of a gas boiler is the core of all its structures and layouts, and the quality, maintenance, and other issues of the burner directly affect the combustion efficiency of the gas boiler. However, even a good burner will still encounter some malfunctions, and the following is a brief summary of the reasons and solutions for the common situations:

1. What to do if the gas boiler burner does not ignite?
The reasons may include: 1. There is carbon debris between the ignition rods, and there is oil contamination; 2. The ignition rod is broken, damp, or short-circuited; 3. The distance between the ignition rods is not correct, too long or too short; 4. The insulation jacket of the ignition rod has damage and is short-circuited to the ground; 5. There are malfunctions in the ignition cable and transformer, such as broken wires, broken connectors that cause short circuits when igniting; transformer breaks down or has other malfunctions.

The measures that can be taken include: cleaning, replacing, adjusting the distance, replacing the wire, and replacing the transformer.

2. What to do if the ignition rods have sparks but cannot ignite the gas boiler?
The reasons include: 1. The swirl plate ventilation gap is blocked by carbon deposits, and the ventilation is poor; 2. The fuel nozzle is unclean, blocked, or worn; 3. The air gate setting angle is too small; 4. The distance between the ignition rod tip and the fuel nozzle front edge is not appropriate (too prominent or recessed); 5. The fuel solenoid valve of the first oil gun is blocked by debris (small oil gun); 6. The oil is too viscous and difficult to flow or the filter system is blocked, or the oil valve is not open, so the oil pump does not suck enough oil, and the oil pressure is low; 7. The oil pump itself filter mesh is blocked; 8. The oil contains too much water (boiling noise in the heater).

The measures that can be taken include: cleaning; first clean and then replace if not effective; try to adjust the distance (3-4mm is appropriate); remove and clean (use diesel to clean the parts); check the pipeline and oil filter, insulation equipment; remove the outer screws of the oil pump, carefully remove the outer cover to take out the oil screen inside, use diesel to soak wash; replace the new oil for testing.

3. What to do if the gas boiler is in small fire mode and extinguishes or the flame flickers when it is switched to large fire mode?
The reasons are: 1. The air gate flow rate setting of the large fire is too large; 2. The microswitch setting of the fuel valve (the outermost group of the air gate) is not appropriate (set larger than the air gate flow rate of the large fire); 3. The oil viscosity is too high and difficult to atomize (heavy oil); 4. The distance between the swirl plate and the fuel nozzle is inappropriate; 5. The fuel nozzle is worn or dirty; 6. The temperature of the standby oil tank is too high, causing the steam to make the oil pump deliver oil smoothly; 7. There is water in the oil of the oil-fired boiler.

The measures that can be taken include: gradually reduce the test; increase the heating temperature; adjust the distance (in the range of 0-10mm); clean or replace; set around 50℃; replace the oil or drain the water.

4. What to do if the gas boiler burner noise increases?
The reasons may include: 1. The oil circuit valve is closed or the oil supply is insufficient, the oil filter is blocked; 2. The inlet oil temperature is low, the viscosity is too high or the pump inlet oil temperature is too high; 3. The oil pump has a malfunction; 4. The motor bearing of the fan is damaged; 5. The fan blades are too dirty.

The measures that can be taken include: check whether the valve in the oil pipeline is open and whether the oil filter is working normally, clean the filter screen of the pump itself; heat up the oil or reduce the oil temperature; replace the oil pump; replace the motor or bearing; clean the fan blades.