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Theresa SmithAug 29, 2025
How to fix CRC error of default values in my Wolf Boiler?
- AAlexander SmithAug 30, 2025
If your Wolf Boiler shows a CRC error with default values, replace the control unit PCB.





How to fix CRC error of default values in my Wolf Boiler?
If your Wolf Boiler shows a CRC error with default values, replace the control unit PCB.
How to fix CRC fault of BCC in my Wolf CGB-75 Boiler?
If your Wolf Boiler shows a CRC fault with the BCC (Boiler Coding Card), replace the boiler coding card.
What to do if my Wolf Boiler shows that the BCC number is invalid?
If your Wolf Boiler shows that the BCC number is invalid, replace the boiler coding card.
What to do if my Wolf CGB-75 Boiler shows a BCC system error?
If your Wolf Boiler shows a BCC system error, replace the boiler coding card.
What to do if my Wolf CGB-75 Boiler shows TBV excess temperature and low water pressure?
If the TBV experiences excess temperature, the combustion chamber cover overheats, the STB is triggered, or the water pressure is too low, first check the system pressure. Also, inspect the heating circuit pump and vent the system. If needed, press the reset button. Clean the heat exchanger, and inspect the TB combustion chamber. Increase system pressure and check the dirt filter.
How to activate boiler coding card in my Wolf CGB-75 Boiler?
To activate the boiler coding card on your Wolf Boiler, press the reset button twice.
How to fix ionisation current failure in my Wolf CGB-75 Boiler?
If your Wolf Boiler is experiencing ionisation current failure, check the monitoring electrode and cable.
What to do if my Wolf Boiler shows flame pretence?
Press the reset button on your Wolf Boiler.
What to do if my Wolf CGB-75 Boiler cylinder sensor is faulty?
Check the sensor and lead of your Wolf Boiler.
What to do if my Wolf CGB-75 Boiler outside temperature sensor is faulty?
Check the cable and outside temperature sensor of your Wolf Boiler.
| Type | Condensing Boiler |
|---|---|
| Output | 75 kW |
| Fuel Type | Natural gas |
| Nominal heat output 80/60 °C | 75 kW |
| Fuel | Natural gas |
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