5-7
TROUBLESHOOTING
SFC BOILER / WATER HEATERS - SFC 199
F007 No or insufcient ame current.
• Check the ignitor.
• Check the wiring of the ignitor for breakage.
• Replace the ignitor.
F008 Incorrect fan speed
• Check the fan cable.
• Check and/or replace the fan.
• Replace the controller.
F009 Internal fault in burner
controller.
• Replace the controller.
F010, F011 Sensor fault S0.
• Check the wiring of heat exchanger sensor S0 for
breakage.
• Check whether the heat exchanger sensor S0 is
connected correctly.
• Check for the correct operation of heat exchanger
sensor S0.
• Replace the heat exchanger sensor S0.
F012 Sensor fault S5.
• Check the wiring of ue gas sensor S5 for breakage/
shutdown.
• Check whether the ue gas sensor S5 is connected
correctly.
• Check for the correct operation of ue gas sensor S5.
• Replace the ue gas sensor S5.
F014 Mounting fault sensor S0.
• Heat exchanger sensor S0 is not mounted correctly.
Mount the sensor correctly.
F016 Mounting fault S3
• Domestic hot water sensor S3 is not mounted
correctly. Mount the sensor correctly.
F018 Flue and/or air supply
duct is blocked.
• Check the ue and the air supply duct.
• Clean the ue and/or the air supply duct.
F019 Boiler Memory Module (BMM) fault.
• Check BMM wiring for breakage.
• Replace the BMM.
F027 Short circuit of outdoor
sensor S6.
• Check the wiring of the outdoor sensor for breakage.
• Replace the outdoor sensor.
F028 Reset error.
• Check the reset button for unintentional operation (e.g.
cleaning of the control panel).
• Replace the burner controller.
F029 Gas valve fault.
• Check the gas valve for leakage.
• Replace the controller.
F030 Sensor fault S3.
• Check the wiring of the domestic hot water sensor S3
for breakage.
• Check whether the domestic hot water sensor S3 is
connected correctly.
• Check for the correct operation of domestic hot water
sensor S3.
• Replace the domestic hot water sensor S3.
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