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author： 2020-05-22
Common faults and solutions of burners in gas boiler
The fault phenomenon
The cause of the problem
Ruled out measures
1, switch on the power, press start, motor does not turn
(1) insufficient air pressure lock
(2) solenoid valve is not strict, joint leakage, check the lock
(3) open circuit of thermal relay
(4) at least one condition circuit is not valid (water level, pressure, temperature and whether the program controller is energized and started)
(1) adjust the air pressure to the specified value
(2) clean or repair the solenoid valve pipe joint
(3) check whether the component is damaged and the motor current according to reset
(4) check whether the water level, pressure and temperature exceed the limit
2. After starting, the front purge is normal, but the ignition cannot be started
(1) insufficient electric fire air capacity
(2) electromagnetic valve does not work (main valve, ignition valve)
(3) solenoid valve burns out
(4) unstable pressure
(5) too much air
(1) check the line and repair it
(2)
(3) adjust the air pressure to the specified value
(4) reduce the air distribution, reduce the air door opening
3, the point is not on fire, normal pressure, electricity is not to fire
(1) the ignition transformer is burnt out
(2) damage or loss of high voltage wire
(3) the gap is too large or too small, the relative size of the ignition rod position
(4) electrode rupture or short circuit with ground
(5) improper spacing
(1)
(2) reinstall or replace
(3) readjustment
(4) reinstall or replace
(5) readjustment
5. After ignition, the fire will be extinguished
(1) pressure is insufficient, pressure drop is too large, and the air supply flow is too small
(2) the air volume is too small, the combustion is not sufficient, the smoke is thicker
(3) too much air, white air
(1) readjust the air pressure and clean the filter
(2) readjustment
(30) readjustment
5. White smoke
(1) the air volume is too small
(2) too much humidity in the air
(3) the exhaust temperature is low
(1) turn down the damper
(2) appropriately reduce air volume and increase air inlet temperature
(3) take measures to raise the temperature of smoke exhaust
The chimney drips water
(1) the ambient temperature is low
(2) more small fire combustion process
(3) gas has high hydrogen content and high oxygen content to produce water
(4) the chimney is longer
(5) the exhaust temperature is low
(1) reduce air distribution
(2) reduce the chimney height
(3) raise the furnace temperature
The throttle stops under control
The throttle position switch signal is not fed back to the program signal
Check whether the damper wiring is loose or whether the switch is out of order
Gas boiler burner
The fault phenomenon
The cause of the problem
Ruled out measures
General failure
7. The burner motor does not work
(1) no voltage
(2) the fuse is damaged
(3) motor failure
(4) control circuit interruption
(5) interruption of gas transmission
(6) control failure
(7) the contactor does not operate
(8) thermal relay is damaged
(1) connect the circuit
(2) replacement
(3) repair
(4) find the disconnect point, contact or disconnect the regulator or monitor
(5) open the ball valve and inform the gas regulatory authority in case of insufficient gas quantity for a long time
(6) replacement
(7) manual reset test
(8) replace the thermal relay
Air shortage
8. The burner motor runs, but stops after prepurge
The burner motor runs, but stops after about 20 seconds (for equipment with seal inspection device only)
(1) air pressure switch is out of order
(2) the pressure switch is contaminated and the pipeline is blocked
(3) the solenoid valve is not sealed
(1) change
(2) clean
(3) exclude the case of non-sealing
9. The burner motor runs, but stops in the pre-purge state after 10 seconds
(1) pressure switch contact is not connected to the operating position (air pressure is too low)
(2) the blower is contaminated, and the heat continues
(3) the rotation direction of the burner motor is wrong
(1) adjust the pressure switch correctly and replace it if necessary
(2) clean
(3) power pole change
Ignition failure
10. The burner motor runs, and the voltage is applied to the terminal post 16 of the controller. There is no ignition
(1) the ignition electrode distance is too large
(2) being polluted
(3) grounding the ignition electrode or circuit
(4) ignition transformer fails
(1) adjust the electrode spacing
(2) cleaning
(3) remove grounding and replace damaged electrodes or cables
(4) replace ignition transformer
Flame formation
11. The motor is running and ignition is normal, but it stops after failure
(1) the solenoid valve is not open because of coil damage or cable break
(1) replace the solenoid valve or troubleshoot the circuit failure, check the voltage at terminal 17
12. In the equipment with sealing inspection device, the sealing is not strict;Burner motor running, ignition normal, but later stop (no fault display)
(1) the solenoid valve is not sealed
(2) insufficient air supply
(3) the filter is blocked
(1) exclude the case of not sealing
(2) cleaning or replacement
Common faults of gas boiler burners and their solutions ii
The fault phenomenon
The cause of the problem
Elimination method
Shut down after flame formation
13. Flame formation, but shutdown under rated load operation
(1) contamination of the filter
(2) pressure regulating valve because of inertia work
(3) gas meter failure or water accumulation in deep pipe
(1) clean the filter
(2) check the oil suction nozzle
(3) inform the gas regulatory agency
Flame monitoring failure during power generation
14. The burner motor runs, the ignition can be heard, the flame is formed normally, but then the fault stops
(1) the ionization current is unstable and too low
(2) uneven mixing regulation of gas and air
(3) the ignition spark affects the ionization current
(1) change the ionization electrode position;Remove excessive environmental resistance from ionizing circuits and terminals (tighten terminals)
(2) readjustment (re-debugging)
(3) primary coil replacement phase line and Central Line of ignition transformer
15. Flame sensor
(1) contamination of uv probe
(2) the light is too weak
(3) the ultraviolet probe is out of order
(1) cleaning (grease removal)
(2) detect the amount of combustion regulating wind and gas
(3) replacement
pump
16. No oil
(1) pump failure
(2) oil transfer pressure power reduction
(3) the oil inlet valve is not sealed
(4) the inlet pipe is not sealed
(5) the stop valve is closed
(6) contamination of the filter
(7) the filter is not sealed
(8) the tubing is not sealed
(9) pump suction air
(10) too high vacuum in the tubing
(1) change
(2) the change of pump
(3) remove the oil inlet valve to clean or replace
(4) seal the inlet pipe
(5) open
(6) clean
(7) replace the sealing ring
(8) screw tight and exhaust
(9) screw tight and exhaust
(10) clean the filter and valve
The nozzle
17. Uneven atomization
(1) the nozzle is contaminated or worn
(1) clean the nozzle or replace itCommon faults and solutions of burners for gas boilers