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 VITOPEND?
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 VITOPEND 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 VITOPEND?
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".
Covers general safety, symbol explanations, and target group for safe appliance operation.
Addresses flue gas, fire, installation room conditions, and fault handling for hazard prevention.
Discusses extractors, auxiliary components, and spare parts to ensure safe system functioning.
Explains how to open, interact with the control unit interface, buttons, and screensaver.
Introduces standard, extended menus, help functions, and system symbols for operation.
Explains operating programs, setting time programs, and comfort modes like Party, Economy, Holiday.
Details steps for starting, stopping the system, and essential operational precautions.
Guides on setting room temperatures, operating programs, and adjusting the heating curve.
Instructions for DHW temperature, operating programs, time programs, and stopping DHW heating.
Covers adjusting display contrast, brightness, and naming heating circuits.
Details on setting time/date, language, temperature units, and restoring factory settings.
Instructions for viewing system information, handling service/fault messages, and emissions tests.
Outlines cleaning, inspection, and maintenance for system components like boiler and DHW cylinder.
Specifies fuel oil quality, additives, combustion improvers, and biofuel compliance.
Provides an overview of the extended menu, information categories, and detailed system terminology.
General| Type | Condensing Boiler |
|---|---|
| Mounting | Wall-mounted |
| Max flow temperature | 85 °C |
| Fuel Type | Natural Gas / Propane |
| Efficiency | Up to 98% |
| Water pressure | Max. 3 bar |
| Protection class | IPX4 |
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