When the combustion controller switches the fire, sometimes there will be a fault problem, so how can it be prevented? Follow the editor of to take a look.
If it is a firing fault, how to judge it? First, start the combustion controller three times in a row. If there is no combustion, it is judged as a firing fault, and corresponding inspections are required to eliminate the fault. The fan is running normally when firing, and the program is correct.
1. If it is a gas source fault, check whether the natural gas pressure is normally maintained at 3-5kpa. Too high or too low will cause the phenomenon of ignition failure. Solution (adjust the natural gas pressure and set the pressure).
2. If it is a damper fault, check the size of the damper. When the damper is too large, it is easy to have multiple firing failures. The solution is; (adjust the damper appropriately, but it cannot be completely closed).
3. If the firing electrode or the firing transformer fails, the firing transformer does not ignite, or the firing electrode is too dirty and the position is wrong, there will be a firing fault. Solution (test whether the firing transformer is firing, clean the firing electrode, and adjust the firing gap to keep 2-3mm).
4. If the gas valve group fails, the valve group will open in time when the fire is normally started, and the sound of opening can be heard. If it cannot be opened, no flame will be established. The solution is (check the valve group coil and adjust the valve opening degree).
5. The firing controller fails. All firing programs are issued by the controller. The controller is damaged and cannot fire normally. Solution: (Replace the controller).
What is a flame-off failure?
(1) When the combustion controller is burning normally, the fire suddenly goes out, which is a flame-off failure.
(2) After the flame fluctuates due to unstable gas source, extinguish the fire. Solution: adjust the pressure and restart.
(3) When the flame detector fails, the flame detection probe is grounded during operation, or it is too dirty to detect the normal flame, and the flame is turned off. Solution: adjust the probe position and clean the probe surface. Restart.
(4) Circuit failure. The power supply is unstable or the phase is missing, causing the flame to shut down during the process. Solution: Contact an electrician to check the power supply and wiring. Burner does not start fault Press the start button for a long time and the burner does not start 1 External interlock fault External temperature or pressure control does not reach the starting lower limit; check the temperature or pressure setting value. The internal interlock of the burner does not pass when the air pressure is too high or too low, when the wind pressure switch is not closed, and when the damper mechanism is not in place. All of these will occur and be checked step by step. 3 The program controller fault is not reset, and reset it again.
(5) The fan motor is overheated and the thermal relay is reset.
(6) Check the control cabinet start button to see if it is normal.
6. Circuit fault The circuit checks whether the start signal is normal and whether the voltage fuse is normal.
Learn the above troubleshooting methods for the combustion controller, and you can solve the combustion controller faults by yourself in the future.
When the combustion controller switches the fire, sometimes there will be a fault problem, so how can it be prevented? Follow the editor of to take a look.
If it is a firing fault, how to judge it? First, start the combustion controller three times in a row. If there is no combustion, it is judged as a firing fault, and corresponding inspections are required to eliminate the fault. The fan is running normally when firing, and the program is correct.
1. If it is a gas source fault, check whether the natural gas pressure is normally maintained at 3-5kpa. Too high or too low will cause the phenomenon of ignition failure. Solution (adjust the natural gas pressure and set the pressure).
2. If it is a damper fault, check the size of the damper. When the damper is too large, it is easy to have multiple firing failures. The solution is; (adjust the damper appropriately, but it cannot be completely closed).
3. If the firing electrode or the firing transformer fails, the firing transformer does not ignite, or the firing electrode is too dirty and the position is wrong, there will be a firing fault. Solution (test whether the firing transformer is firing, clean the firing electrode, and adjust the firing gap to keep 2-3mm).
4. If the gas valve group fails, the valve group will open in time when the fire is normally started, and the sound of opening can be heard. If it cannot be opened, no flame will be established. The solution is (check the valve group coil and adjust the valve opening degree).
5. The firing controller fails. All firing programs are issued by the controller. The controller is damaged and cannot fire normally. Solution: (Replace the controller).
What is a flame-off failure?
(1) When the combustion controller is burning normally, the fire suddenly goes out, which is a flame-off failure.
(2) After the flame fluctuates due to unstable gas source, extinguish the fire. Solution: adjust the pressure and restart.
(3) When the flame detector fails, the flame detection probe is grounded during operation, or it is too dirty to detect the normal flame, and the flame is turned off. Solution: adjust the probe position and clean the probe surface. Restart.
(4) Circuit failure. The power supply is unstable or the phase is missing, causing the flame to shut down during the process. Solution: Contact an electrician to check the power supply and wiring. Burner does not start fault Press the start button for a long time and the burner does not start 1 External interlock fault External temperature or pressure control does not reach the starting lower limit; check the temperature or pressure setting value. The internal interlock of the burner does not pass when the air pressure is too high or too low, when the wind pressure switch is not closed, and when the damper mechanism is not in place. All of these will occur and be checked step by step. 3 The program controller fault is not reset, and reset it again.
(5) The fan motor is overheated and the thermal relay is reset.
(6) Check the control cabinet start button to see if it is normal.
6. Circuit fault The circuit checks whether the start signal is normal and whether the voltage fuse is normal.
Learn the above troubleshooting methods for the combustion controller, and you can solve the combustion controller faults by yourself in the future.