Troubleshooting - Wolf FGB-K Series Installation And Maintenance Instructions For Contractors

General information
Never remove, bypass or otherwise disable any safety or monitoring equipment. Only operate the gas condensing
boiler when it is in perfect technical condition. Any faults or damage which impact or might impact upon safety must
be remedied immediately by a qualified contractor. Only replace faulty components and equipment with original
Wolf spare parts.
Faults are shown on the display of the control unit or the control accessory BM-2 programming unit and correspond
to the messages listed in the following tables.
A fault symbol in the display indicates an active fault message.
Faults must only be repaired by qualified personnel. If a lockout fault message is acknowledged
Please note
several times without the cause of the problem being repaired, this can lead to component or
system damage.
The control unit automatically acknowledges faults such as faulty temperature sensors or other sensors if the part
concerned has been replaced and plausible test values have been supplied.
Procedure for faults:
- Read the fault number.
- Determine the cause of the fault using the table below and remedy it.
- Reset the fault via reset button (4). If the fault message cannot be acknowledged, high
temperatures at the heat exchanger might be preventing a reset.
- Check that the system is functioning correctly.
Message history:
A message history displaying the last 8 fault messages can be called up in the menu level of the heating system
control unit.
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34. Troubleshooting

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