Strebel S-WG 100, Installation, Operating And Maintenance Manual, Page: 106 / 125

E09.012.246 Manual S-WG
107
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F8
F a i l e d b u r n e r s t a r t
p u m p o n 9 9 9 , 5 h r s
Reason
Water heater not operational after 4 starting attempts.
Cause:
No spark.
Corrective action:
Check the igniter/ignition electrode and replace/clean it if necessary.
Check the state of the ceramic insulator. A small crack can prevent the spark to form at
the end of the electrode.
Check the distance between the electrode pin, earth pin and burner.
Check the state of the ignition cable and replace it if necessary.
Check the state of the earth wire/connection of the igniter and replace it if necessary.
Check the state of the sparkplug cap and replace it if necessary.
Check power supply. Voltage must be 230 Vac nom.
Check for proper electrical grounding of unit.
Bad ignition transformer. Change the electronics of the unit.
Cause:
Ignition spark, but no flame.
Corrective action:
Check if all gas valves in the supply line are completely open.
Check if there is no air in the gas supply (start-up new systems).
Check if the gas valve opens. When there is power supply to the gas valve, but the valve
does not open, the gas valve must be replaced.
Check if the gas valve opens. When there is no power supply to the gas valve check the
gas valve wiring/connections.
Check if the gas valve settings are correct and adjust if necessary.
Check if the gas pressure is correct and sufficient.
Check if the air supply is open/not blocked.
Cause:
Flame, but not enough ionisation to establish the flame.
Corrective action:
Check the igniter/ignition electrode and replace/clean it if necessary.
Check the state of the ceramic insulator.
Check the distance between the electrode pin, earth pin and burner.
Check the state of the ignition wire (also the ionisation wire) and replace it if necessary.
Check the state of the earth wire/connection of the igniter and replace it if necessary.
Check for proper electrical grounding of unit.
Check power supply. Voltage must be 230 Vac nom.
Check the state of the sparkplug cap and replace it if necessary.