What to do if 'Fault' and 'E' are displayed on my Viessmann Heating System?
If your Viessmann Heating System displays 'Fault' and 'E', accompanied by a flashing red fault indicator, attempt to resolve the issue by pressing the burner fault reset button labeled "E". If the problem continues after resetting, it is recommended to contact your heating contractor for further assistance.
Why are my rooms too cold with my Viessmann Heating System?
If the rooms are too cold, several factors could be at play. First, ensure the heating system is switched ON; the ON indicator "8" should be green. Also, check the main isolator (if installed) and the circuit breaker inside the power distribution board. If a 'Fault' and 'E' are displayed with a flashing red fault indicator, press the burner fault reset button "E"; if the issue persists, contact your heating contractor. If that doesn't work, check the fuel level or gas supply, opening the gas shut-off valve if necessary, and then press burner fault reset "E".
What to do if my Viessmann Heating System is prioritizing DHW and the rooms are too cold?
If the rooms are too cold, and you are operating with DHW heating, it might be due to DHW priority (indicated by 'wp' on the display). In this case, wait until the DHW cylinder has been fully heated. If you're using an instantaneous water heater, wait until no more DHW is being drawn off (indicated by 'p' disappearing from the display).
Why are my rooms too cold when using Vitotronic 200-H with my Viessmann Heating System?
If the rooms are too cold, and you have a Vitotronic 200-H or extension kit with a mixer, check the ON/OFF switch on the mixer motor. Ensure it is switched ON; the correct setting is I = ON.
Why is my Viessmann Heating System not providing heat due to lack of fuel?
If the rooms are too cold, the problem could be a lack of fuel. For oil/LPG systems, check the fuel stock and re-order if necessary. For natural gas systems, open the gas shut-off valve and consult your gas supplier if needed. After addressing the fuel supply, press the burner fault reset button "E".
General| Type | Condensing Boiler |
|---|---|
| Heat Exchanger Material | Stainless Steel |
| Fuel Type | Natural gas, LPG |
| Efficiency | Up to 98% |
| Modulation Ratio | 1:10 |
| Control System | Vitotronic |
| Mounting | Wall-mounted |
| Warranty | Up to 10 years (depending on model and conditions) |
Follow safety instructions to prevent accidents and material losses.
Steps to take during gas leaks, fire, water leaks, or system faults.
Selecting predefined operational modes.
Setting heating schedules and time phases.
Procedures for initial system activation.
Procedures for safe system deactivation.
Adjusting desired room temperatures.
Setting heating operational modes.
Scheduling heating periods.
Adjusting domestic hot water temperature.
Selecting DHW heating modes.
Scheduling domestic hot water heating.
Diagnosing system errors and alerts.
Diagnosing and resolving temperature issues.
Diagnosing and resolving temperature issues.
Troubleshooting hot water supply problems.
Troubleshooting hot water supply problems.
Interpreting and responding to system faults.
To Next Page
