Viessmann filtre All models error codes
Codes
- A1Error codeAll settings that can be made at the remote con- trol can be executed (only for constant temperature control units)
- A2Error codeCylinder priority applica- ble to heating circuit pump and mixer
- A3Error codeOutside temperature below 34°F (1°C): Heating circuit pump “ON” Outside temperature above 37°F (3°C): Heating circuit pump “OFF”
- A5Error codeWith heating circuit pump logic function (economy mode): Heating circuit pump “OFF” when the outside temperature (AT) is 1 K higher than the set room temperature (RTset) AT > RTset + 1 K
- A6Error codeExtended economy function disabled
- A7Error codeWithout mixing valve economy function
- A8Error codeHeating circuit with mixing valve creates a demand for the boiler circuit pump
- A9Error codeWith pump idle time: Heating circuit pump “OFF” if the set value is altered through a change in operating mode or through a change in the set room temperature
- B0Error codeOnly with heating circuit with mixing valve and remote control. Heating mode and reduced mode
- b1Error codeCommunica- tion error, programming unit
- B1HError codeDHW temperature sensor reading drops below set point. Close DHW contact in control (aquastat). - boiler set-point temp. = 176ºF (80ºC) (non-adjustable)
- B1KError codeDHW flow sensor / temp. sensor
- B2Error code
- B5Error codeWith heating circuit pump logic function
- b7Error codeBoiler coding card faulty
- b8Error codeFlue gas temperature sensor wire broken
- C1Error codeCommunica- tion error extension EA1
- C2Error codeCommunica- tion error, solar control module or Vitosolic
- C3Error codeExtension AM1 commu- nication error
- C4Error codeCommunica- tion error, Open Therm extension
- C5Error codeElectronic minimum flow temperature limit 68°F (20°C)
- C6Error codeElectronic maximum flow temperature limit 165°F (74°C)
- C7Error codeCommunica- tion error, external vari- able speed heating circuit pump, heat- ing circuit 1 (without mixer)
- C8Error codeCommunica- tion error, external vari- able speed heating circuit pump, heat- ing circuit 3 (with mixer)
- D5Error codeThe external heating program changeover changes the heating program to “Constant operation with reduced room temperature” or “Standby mode”
- D6Error codeHeating circuit pump stays in control mode at signal “External blocking”
- D7Error codeHeating circuit pump stays in control mode at signal “External demand”
- d8Error codeInput DE3 fault at exten- sion EA1
- E0Error codeFault external LON sub- scriber
- E2Error codeWith remote control: No display correction for the actual room temperature
- E3Error codeFault in safety chain
- E4Error codeFault, supply voltage 24 V
- E5Error codeWithout external variable speed heating circuit pump
- E6Error codeMaximum speed of the variable speed heating circuit pump in % of the maximum speed in standard mode. Value is specified by boiler-specific parameters
- E7Error codeMinimum speed of the variable speed heating circuit pump: 30% of the maximum speed
- E8Error codeMinimum speed in operation with reduced room temperature subject to the setting in coding address “E9”
- E9Error codeSpeed of the variable speed heating circuit pump: 45% of the maximum speed during operation with reduced room temperature
- EA1Error codeHeating circuit A1 (programmable pump output)
- F0Error codeInternal fault
- F1Error codeMaximum flue gas temperature exceeded
- F5Error codeRun-on time of the boiler circuit pump in heating mode: 12 minutes
- F6Error codeIn the “Only DHW” operating mode, the internal circulation pump is permanently on
- F7Error codeIn the “Standby” operating mode, the internal circulation pump in the heating circuit is permanently ON
- F8Error codeTemperature limit for terminating the reduced mode 23°F (-5ºC); See operating instructions. Observe the setting of coding address “A3”
- F9Error codeTemperature limit for raising the reduced set room temperature 6.8°F ( -14ºC); See operating instructions
- HC2Error codeHeating circuit pump output enabled (extension to heating circuit with mixing valve)
- HC3Error codeHeating circuit pump output enabled (extension to heating circuit with mixing valve)
- put21Error codeDHW circulation pump (internal pump)
- ver14Error code