Troubleshooting - Wolf CGS-2-14/120L Installation Instructions Manual

General information
Never remove, bypass or otherwise disable any safety or monitoring equipment. Operate the gas condensing boiler
only 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. Replace faulty components and equipment only with original
Wolf spare parts.
Faults and warnings are shown in plain text on the display of the control accessories – AM display module or BM-2
programming unit – and correspond to the messages listed in the following tables.
A warning/fault symbol on the display (symbol: triangle with exclamation mark) indicates an active warning or fault
message. A lock symbol (symbol: padlock) indicates that the current fault message has caused a lockout of the
appliance. The duration of the current message is also shown.
Warnings do not need to be acknowledged and do not lead directly to the appliance being switched off.
Please
However, the causes of the warnings can lead to malfunctions of the appliance/system or to faults and
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should therefore be rectified by a qualified contractor.
Faults must only be rectified by qualified personnel. Component or system damage can result if
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a lockout fault message is acknowledged several times without the cause of the problem having
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been rectified.
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 in the case of faults:
- Read fault message
- Determine cause of fault using the table below and remedy it
- Acknowledge fault.
If the fault message cannot be acknowledged, high temperatures at the heat exchanger might prevent a reset
- Check that the system is functioning correctly
Note:
To acknowledge the following fault messages, first enter contractor code "1111":
FC 20, 30, 32, 35, 36, 37, 38, 39, 99
Procedure in the case of warnings:
- Read warning message
- Determine cause of warning using the table below and remedy it
- With warnings, there is no need for fault acknowledgement
- Check that the system is functioning correctly
Message history:
A message history can be requested in the 'Contractor' menu of the AM display module or BM-2 programming unit,
displaying the last 20 fault messages.
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40. Troubleshooting

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