GASTER N 119 ÷ 289 AW
30
cod. 3541F272 - Rev. 00 - 06/2018
EN
3.4 Troubleshooting
After several lighting attempts, the electronic controller shuts down the boiler.
Pilot burner nozzle dirty - Clean with compressed air
Check the regular gas flow to the boiler and that the air has been eliminated from the pipes.
Make sure the electrodes are correctly positioned and free of any deposits (see
fig. 12).
Make sure the boiler is connected to an efficient earthing system.
Check the connections to the ignition and ionisation electrodes.
The electrodes are not discharging in the ignition phase.
Make sure the electrodes are correctly positioned and free of any deposits (see
fig. 12).
Check the power supply.
Check the connections to the ignition and ionisation electrodes.
Check the connections to the electronic flame controller.
Make sure PHASE-NEUTRAL are not inverted and that the earth contacts are efficient.
Reset the safety thermostat.
Reset the fume thermostat.
The burner burns poorly: flames too high, too low or too yellow
Gas valve filter dirty
Check the gas supply pressure.
Gas nozzles dirty.
Make sure the boiler is not dirty.
Make sure the ventilation in the room where the unit is located is sufficient for good combustion.
Smell of unburnt gas
Make sure the boiler is perfectly clean
Check the flue draught
Make sure gas consumption is not excessive
The boiler works but the temperature fails to increase
Check the 2-stage control thermostat.
Make sure the gas valve 2nd stage operator (max. power) is fed (see fig. 8)
Make sure gas consumption is not lower than that foreseen.
Make sure the boiler is adequate for the system.
Make sure the heating pump is not blocked.
Temperature of water to the system too high or too low
Check the 2-stage control thermostat.
Make sure the pump is not blocked.
Make sure the characteristics of the circulating pump are adequate for the system.
Explosion at burner. Ignition delays
Make sure the gas pressure is sufficient and that the boiler shell is not dirty.
The control thermostat switches on again with too great a temperature difference
Make sure the thermostat bulb is properly inserted in the sheath.
Check the 2-stage control thermostat.
The boiler produces condensation water
Make sure the boiler is not operating at too low temperatures (below 50°C).
Make sure gas consumption is regular.
Check the efficiency of the flue.
N.B.
To avoid unnecessary expense, before calling the After-Sales Service check if the boiler has stopped due to no power or gas.
Summary of Contents for GASTER N 119
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