What to do if my Viessmann Vitodens 100 burner is blocked due to low water pressure?
If the Viessmann Boiler is blocked because the water pressure is too low, press the 'Reset' button and top up the water. If the issue persists, the control unit may need replacement.
What to do if my Viessmann Boiler burner is blocked because of a temperature sensor issue?
If the burner of your Viessmann Boiler is blocked due to a temperature sensor issue, it could be shorted out, have a lead break, or have a short circuit. Check the boiler temperature sensor as described on page 72. Also, draw off the temperature sensor as described on pages 72 and 74.
Why is my Viessmann Boiler burner blocked?
If the burner of your Viessmann Boiler is blocked, it might be due to several reasons: low water flow, air in the heat exchanger, a faulty flow switch, or low voltage. Try venting the heating system and checking the interconnecting cable. If the voltage is low, contact your electricity supplier.
How to fix a Viessmann Boiler burner that is blocked due to an internal fault?
If the burner of your Viessmann Boiler is blocked due to an internal fault or supply voltage issues, the control unit likely needs to be replaced.
General| Model | Vitodens 100 |
|---|---|
| Category | Boiler |
| Heat Exchanger | Stainless Steel |
| Vent Type | Direct vent |
| Fuel Type | Natural gas or propane |
| Modulation Range | 6:1 |
| Weight | Approx. 40 kg |
| Warranty | Up to 10 years |
| Type | Condensing Gas Boiler |
| Control | Vitotronic Control Unit |
Explanation of warning symbols, target group, and basic safety warnings.
Procedures for detecting and responding to gas and flue gas.
Safety guidelines for installation, repair, and handling of components.
General description, features, and certification details of the boiler.
Key technical data, performance metrics, and specifications.
Physical dimensions and required installation space around the boiler.
Details on concentric horizontal and vertical flue system configurations.
Schematic of water flow within the combi boiler.
Regulatory compliance and guidelines for boiler site placement.
Location requirements for flue outlets and air supply needs.
Unpacking, mounting bracket installation, and connection preparation.
Steps for physically installing the boiler and removing the front panel.
Procedures for connecting gas, water utilities, and safety valve drain.
Connecting the condensate drain and installing the flue outlet.
Wiring the appliance, control unit, and external controls.
Initial startup, system checks, filling, and functional testing.
Recommendations for regular maintenance frequency and procedures.
Procedures for burner removal, checks, and electrode adjustment.
Cleaning the condensate siphon and internal heating surfaces.
Checking and topping up system pressure and expansion vessel.
Post-service procedures, front panel installation, and boiler startup.
Initial checks, function sequences, and display of fault codes.
Specific causes and remedies for various error codes.
Removing the front panel and draining the boiler for repair access.
Checking and replacing the boiler temperature sensor.
Checking the temperature limiter and DHW sensor.
Replacing the flow limiter and checking the plate heat exchanger.
Procedure for checking the main fuse.
Electrical schematics for the combi boiler model.
Electrical schematics for the system boiler model.
Guidance on identifying and ordering spare parts.
Visual representation of major boiler components and parts.
Installation verification checklist for gas boilers.
Logbook for recording regular maintenance services.
Manufacturer's declaration of product compliance with standards.
Details on applicable boiler models and serial numbers.
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