To Next PageTo Next PageWhat to do if external fault at programmable Input E1 on Wolf CGB-2K-20?
If your Wolf Boiler displays 'External fault at programmable Input E1', it means an external fault has been reported at programmable input E1 because the fault message contact at E1 has opened. Rectify the external fault and check the lead. Acknowledge the fault message afterward.
What to do if there is flame failure in Wolf CGB-2K-20 Boiler?
If the Wolf Boiler shows a 'Flame failure' error, it could be due to several reasons. First, verify the gas type setting on both the gas valve and the AM/BM. Then, check the gas supply pressure. Inspect the condition of the ionization electrode, cleaning or replacing it if necessary, and ensure its gap and position are correctly set. Finally, examine the flue path inside and outside the appliance for any leaks or blockages.
How to fix HLSC excess temp on Wolf Boiler?
If your Wolf Boiler displays 'HLSC excess temp,' it indicates that the temperature at the heat exchanger cover has exceeded 185 °C. Check the cables and plugs connected to the high limit safety cut-out (HLSC). If the electrical connections are fine but there's still no function, replace the HLSC. Another possible cause is a contaminated combustion chamber, in which case, clean or replace the combustion chamber.
What to do if TL excess temp on Wolf Boiler?
If your Wolf Boiler shows a 'TL excess temp' error, it means one of the temperature sensors eHLSC1 or eHLSC2 on the combustion chamber has exceeded the high limit safety cut-out limit (108 °C). Check the system pressure and vent the heating circuit. Inspect the cables and plugs of the temperature limiter (eHLSC), and if they are OK but there's no function, replace the eHLSC. Also, check if the pump is running; if not, check its cables and plugs, and if the electrical connection is OK but it's still not working, replace the pump.
What to do if boiler sensor is faulty in Wolf Boiler?
If your Wolf Boiler displays the message 'Boiler sensor faulty' it could be due to excess temperature in the flow (Boiler sensor > 100 °C). First, check if the pump is running. If it is not, check the cables and plugs and if the electrical connection is OK but there is still no function, replace the pump. Another solution is to increase the minimum pump speed. Also, check the leads and plug-in connections of the boiler sensor, and if they are OK but there is still no function, replace the boiler sensor.
What causes timeout calibration error on Wolf CGB-2K-20?
If your Wolf Boiler displays 'Timeout calibration', it means the heating appliance cannot carry out calibration. Check the flue path inside and outside the appliance for any blockages related to flue gas recirculation. Ensure the fan and its wiring are intact. Ensure adequate heat transfer by opening heating circuits.
What causes GLV actuators error on Wolf CGB-2K-20?
If your Wolf Boiler displays 'GLV actuators' there may be several causes. Check the flue path inside and outside the appliance for leaks or blockages related to flue gas recirculation and check for wind effect. Verify the gas type setting on the gas valve and the AM/BM-2. Remove the gas valve retainer and check that the correct gas restrictor is fitted. Check the fan for bearing damage and inspect the cables, plug-in connections, power supply, and switching.
What to do if GCV relay test failed on Wolf Boiler?
If your Wolf Boiler displays 'GCV relay test', it means the valve test failed and the gas valve is faulty. Replace the gas valve.
Why is fan speed high on Wolf Boiler?
If the Wolf Boiler displays 'Fan speed >', it means the fan does not stop. Check the fan's cables, plug-in connections, power supply, and switching. If the fault occurs repeatedly, replace the fan.
What to do if outside sensor is faulty in Wolf CGB-2K-20?
If your Wolf Boiler displays 'Outside sensor faulty,' it means that the outside sensor or sensor lead has a short circuit or break. For the eBus outside temperature sensor, refer to its instructions. Similarly, for a wireless outside sensor, consult its specific instructions.
Covers installation for CGB-2 and CGB-2K models.
Guidance on user training for operation, maintenance, and safety.
Steps to take if gas or flue gas smell is detected.
Warnings about electrical hazards and live components.
Precautions regarding hot water and components (scalding, burns).
Safety steps before working on the appliance.
Technical drawing showing dimensions for CGB-2.
Technical drawing showing dimensions for CGB-2K.
Detailed technical data for different models.
Diagram showing component layout for CGB-2.
Diagram showing component layout for CGB-2K.
Explains how the system controls combustion.
Details on how and when the system calibrates.
Step-by-step guide to access the casing.
Lists local compliance requirements for installation.
Lists applicable standards and guidelines.
Guidance on DHW temperature settings to prevent scale.
Specifies required space around the boiler.
Conditions for the installation room (frost, temp., chemicals).
Diagrams showing dimensions and connection layouts.
Steps for mounting the boiler using a bracket.
Details on installing maintenance valves and dirt traps.
Warnings and requirements for electrical work.
Detailed breakdown of terminal connections.
Steps for connecting the main power supply.
Explains different operating modes shown on display.
Explains various burner status messages.
List of control parameters with factory settings.
Requirements for leak testing and water treatment.
Step-by-step instructions for filling the system.
Procedure to switch to LPG operation.
Steps to measure gas supply pressure.
How to adjust output via parameter HG04.
Steps for converting combi to cylinder boiler.
Steps for converting cylinder boiler to combi.
How to adjust the DHW draw-off rate.
Checklist for commissioning steps.
Continuation of the commissioning checklist.
Table of routing options and max lengths.
Procedure for tightness testing cascade systems.
Specific tightness test procedure for CGB-2.
Notes on connecting underfloor heating systems.
Steps to perform a parameter reset.
General advice on dealing with faults and warnings.
Steps to follow when a fault occurs.
Steps to follow when a warning occurs.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists warnings, causes, and remedies.
Lists warnings, causes, and remedies.
Covers installation for CGB-2 and CGB-2K models.
Guidance on user training for operation, maintenance, and safety.
Steps to take if gas or flue gas smell is detected.
Warnings about electrical hazards and live components.
Precautions regarding hot water and components (scalding, burns).
Safety steps before working on the appliance.
Technical drawing showing dimensions for CGB-2.
Technical drawing showing dimensions for CGB-2K.
Detailed technical data for different models.
Diagram showing component layout for CGB-2.
Diagram showing component layout for CGB-2K.
Explains how the system controls combustion.
Details on how and when the system calibrates.
Step-by-step guide to access the casing.
Lists local compliance requirements for installation.
Lists applicable standards and guidelines.
Guidance on DHW temperature settings to prevent scale.
Specifies required space around the boiler.
Conditions for the installation room (frost, temp., chemicals).
Diagrams showing dimensions and connection layouts.
Steps for mounting the boiler using a bracket.
Details on installing maintenance valves and dirt traps.
Warnings and requirements for electrical work.
Detailed breakdown of terminal connections.
Steps for connecting the main power supply.
Explains different operating modes shown on display.
Explains various burner status messages.
List of control parameters with factory settings.
Requirements for leak testing and water treatment.
Step-by-step instructions for filling the system.
Procedure to switch to LPG operation.
Steps to measure gas supply pressure.
How to adjust output via parameter HG04.
Steps for converting combi to cylinder boiler.
Steps for converting cylinder boiler to combi.
How to adjust the DHW draw-off rate.
Checklist for commissioning steps.
Continuation of the commissioning checklist.
Table of routing options and max lengths.
Procedure for tightness testing cascade systems.
Specific tightness test procedure for CGB-2.
Notes on connecting underfloor heating systems.
Steps to perform a parameter reset.
General advice on dealing with faults and warnings.
Steps to follow when a fault occurs.
Steps to follow when a warning occurs.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists faults, causes, and remedies.
Lists warnings, causes, and remedies.
Lists warnings, causes, and remedies.
General| Type | Condensing boiler |
|---|---|
| Nominal heat output 50/30 °C | 20 kW |
| Efficiency 50/30°C | 109% |
| Efficiency 80/60°C | 98% |
| Dimensions Width | 440 mm |
| Heating Capacity | 20 kW |
| Fuel Type | Natural gas |
| Operating Pressure | 3 bar |
