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Joseph HawkinsSep 10, 2025
How to fix a gas valve '1' fault in a Wolf Boiler?
- SsmithtriciaSep 12, 2025
If your Wolf Boiler shows a gas valve „1“ fault, replace the gas combination valve.
To Next PageTo Next PageHow to fix a gas valve '1' fault in a Wolf Boiler?
If your Wolf Boiler shows a gas valve „1“ fault, replace the gas combination valve.
What causes flow monitoring issues in a Wolf Boiler?
If flow monitoring is triggered in your Wolf Boiler because the return temperature is greater than the flow temperature + 25 K, vent the heating system and check the system pressure. Also, check the heating circuit pump.
What to do if the cylinder sensor is faulty on my Wolf CGB-35 Boiler?
If the DHW temperature sensor or lead is faulty in your Wolf Boiler, check the sensor and lead.
How to fix Wolf CGB-35 Boiler when no flame is established?
If no flame is established during the burner start in your Wolf Boiler, first, check the gas supply pipe and open the gas shut-off valve if it's closed. Then, inspect the ignition electrode and cable. Finally, press the reset button.
How to fix a faulty return sensor in a Wolf Boiler?
If the return sensor is faulty in your Wolf Boiler, check the lead and replace the return sensor.
Why is the ionization current dropping in my Wolf CGB-35?
If the ionization current drops in your Wolf Boiler, it could be due to poor gas quality, a faulty monitoring electrode, or a severe storm. Check the monitoring electrode and lead.
What to do if there is a fault in the 24 VAC supply of my Wolf CGB-35 Boiler?
If there's a fault in the 24 VAC supply of your Wolf Boiler, which is outside the permissible range (e.g., short circuit), check the three-way valve and the gas fan.
What does a false flame signal mean on a Wolf CGB-35 Boiler?
If your Wolf Boiler shows a false flame signal, press the reset button.
Why does the ionization current fluctuate in my Wolf Boiler?
If the ionization current fluctuates in your Wolf Boiler, it may be caused by a blocked siphon or flue gas system, or a severe storm. Clean the siphon, check the flue gas system and ventilation air, and check the monitoring electrode.
How to troubleshoot a faulty flow sensor or low gas pressure in Wolf CGB-35?
If your Wolf Boiler indicates a faulty flow sensor or gas pressure is too low, check the lead and the flow sensor. Also, check the gas pressure and the gas pressure switch (accessory).
Immediate actions to take if gas is detected, including ventilation and contacting services.
Steps to follow if flue gas is detected, focusing on ventilation and contractor notification.
Procedure for safely changing a fuse, emphasizing power isolation to prevent electrocution.
Information on boiler protection against freezing, including operational status and draining.
Warning about ice formation on balanced flue pipes and potential injury or material loss.
Guidance on boiler installation and modification by approved heating contractors only.
Instructions for cleaning the boiler casing and importance of regular contractor maintenance.
Procedure for filling the heating system with water and checking pressure.
General| Type | Condensing Boiler |
|---|---|
| Max. Heat Output | 35 kW |
| Max working pressure | 3 bar |
| Fuel Type | Natural Gas |
| Efficiency | 98% |
| Temperature range | 85°C |
