Sda gas boiler control cabinet shows burner failure, how to deal with?

Common faults and troubleshooting methods of gas burner

Fault phenomenon Remedy

1, turn on the power, press start, the motor does not rotate

(1) air pressure does not meet the conditions (1) adjust the air pressure to the specified value

(2) solenoid valve is not tight, leakage at the joints, check the locking (2) clean up or repair of the solenoid valve piping joints

(3)Thermostat open circuit (3)Check whether the thermostat is closed

(4)Conditional circuit at least one does not hold (4)Check whether the water level, pressure, temperature is over the limit

2, startup before the blowdown is normal, but can not be ignited

(1)The burner is not grounded (1)Access to the ground line in the circuit

(2)Solenoid valves do not work (the main valve, the ignition valve) (2)Replace with new

(3)Air pressure is not stable (3)Adjust the air pressure to the specified value

(4)The air volume is too large (4)Reduce the air distribution, reduce the opening of the air door

3.Ignition can not be ignited, the air pressure is normal, the electricity has a non-strike

(1)Ignition transformer burned out (1)Replace with new

(2)High voltage wire is damaged or disconnected (2) Reinstall or replace with new

(3) Gap too large or too small, ignition rod position relative size (3) readjustment

(4) Electrode rupture or short-circuit with the ground (4) Reinstall or replace with new

(5) Spacing is not appropriate (5) readjustment

4, ignition is lit and then 5ˋS after the flameout

(1) Insufficient air pressure, the pressure drop is too large, the Gas supply flow rate is small (1) adjust the air pressure, clean the screen, increase the flow rate to the burner needs

(2) air volume is too small, combustion is insufficient, smoke color is thicker (2) re-adjust the wind-fuel ratio

(3) air volume is too large, there is a white gas (3) re-adjust the wind-fuel ratio

5, white smoke

(1) too large wind (1) adjust the dampers

(2)Air humidity is too large (2)Reduce the air volume appropriately and increase the temperature of the incoming air

(3)Exhaust temperature is low (3)Take measures to increase the temperature of the exhaust smoke

6, the chimney dripping

(1)The ambient temperature is low (1)Do a good job of chimney heat preservation

(2)The combustion process of the small fire is more (2)Reset the set value of the temperature control

(3) Gas with high hydrogen content, peroxide generated water (3) Reduce the amount of air distribution

(4) Longer chimney (4) Decrease the height of the chimney

(5) Exhaust temperature is low (5) Increase the temperature of the furnace

7, the burner motor does not rotate

(1) no voltage (1) connected to the circuit

(3) motor failure (3) Repair or replace

(4) Control circuit interrupted (4) Find disconnect point, contact or disconnect regulator or monitor

(5) Gas delivery interrupted (5) Open ball valve, clean filter

(6) Contactor does not actuate (6) Manually reset to check

(7) Thermal relay damaged (7) Replace thermal relay

8, Burner motor runs, but stops after about 20 seconds

(1) Air pressure switch malfunctioning (1) Replace

(2) Pressure switch contaminated, tubing clogged (2) Clean

(3) Solenoid valve not sealing (only for units with seal check device) (3) Rule out non-sealing

9. Burner motor runs, but after 10 seconds to stop in pre-purge condition

(1) Pressure switch contacts not connected to run position (air pressure too low) (1) Adjust pressure switch correctly and replace if needed

(2) Blower is contaminated and thermal relay operates (2) Clean

(3) Burner motor rotates in wrong direction (3) Power supply changes phase

10, Burner motor running, voltage on the ignition transformer, no ignition, a little later failure to stop

(1) ignition electrode distance is too large (1)Adjust electrode spacing

(2)Contaminated (2)Clean

(3)Ignition electrode or circuit grounded (3)Eliminate grounding, replace damaged electrodes or cables

(4)Failure of the ignition transformer (4 )Replace ignition transformer

11、Motor runs, ignition normal, but later malfunctions and stops

(1)Solenoid does not open because solenoid coil is damaged or cable is broken (1)Replace solenoid or troubleshoot circuit not working

(2)Grounding circuit disconnected (2)Recheck grounding is intact

12、In equipment with a sealed test device, the burner motor runs, ignition is normal, but then stops (no fault indication)

(1) Solenoid valve does not seal (1)Rule out non-sealing

(2)Insufficient air supply (2)Increase air supply flow rate

(3)Filter is clogged (3)Clean or replace it

14.Burner motor runs, flame formation is Normal, but then malfunction shutdown

(1) Ionization current is unstable, too low (1) change the position of the ionization electrode and the flame disk, and check the connection line

(2) gas-air mixing is not adjusted evenly (2) re-adjust the gas-air mixing

(3) Ignition spark affects the ionization current (3) Ignition transformer primary coil to replace the phase wire and the middle wire