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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.
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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 error of burner in my Wolf Boiler?
If your Wolf Boiler shows a CRC error for the burner, switch the power supply off and on. If this does not resolve the issue, replace the controller PCB.
How to fix CRC fault in my Wolf gas condensing Boiler?
If your Wolf Boiler shows a CRC fault for the gas condensing boiler, switch the power supply off and on. If the issue persists, replace the controller PCB.
What to do if my Wolf Boiler shows a faulty outside temperature sensor?
If the outside temperature sensor or lead is faulty, check the lead and the outside temperature sensor.
What to do if my Wolf Boiler shows BCC no. invalid?
If there is a faulty boiler coding card, replace it.
What to do if my Wolf Boiler has a TW excess temperature?
If the flow/return temperature has exceeded the limit for the TW shutdown temperature, check the system pressure and vent the system. Set the pump to stage 2 or 3.
Why is the LED constantly red on my Wolf CGB-75?
If your Wolf Boiler's LED is constantly red, this may be due to an ionisation cable short circuit or the ionisation electrode being earthed (casing). Check the ionisation cable and the position of the electrode to the burner. Press the reset button.
What to do if my Wolf CGB-75 shows a faulty flow sensor or low gas pressure?
If your Wolf Boiler has a faulty flow sensor or indicates that the gas pressure is too low, check the cable and flow sensor. Also, check the gas pressure and gas governor.
How to fix ionisation current fluctuation in my Wolf CGB-75 Boiler?
If your Wolf Boiler is experiencing ionisation current fluctuation, clean the trap, check the flue system and ventilation air, and check the monitoring electrode.
What to do if my Wolf CGB-75 shows TBA excess temperature and excess pressure in the flue system?
If your Wolf Boiler displays TBA excess temperature or excess pressure in the flue system, clean the heat exchanger, check the flue system, and check the ventilation air.
General| Type | Condensing Boiler |
|---|---|
| Output | 75 kW |
| Fuel Type | Natural gas |
| Nominal heat output 80/60 °C | 75 kW |
| Fuel | Natural gas |
