Error Codes
| Error Code | Constant Temp. | Weather-dependent | Error Description | Error Cause | Action |
|---|---|---|---|---|---|
| 10 | X | X | Works as at 0°C outside temperature | Short circuit in the external temperature sensor | Check the external temperature sensor (see page 123) |
| 18 | X | X | Works as at 0°C outside temperature | Break in the external temperature sensor | Check the external temperature sensor (see page 123) |
| 20 | X | X | Regulation without a temperature sensor for water supply (hydraulic coupling) | Short circuit in the water temperature sensor at the system supply | Check the hydraulic coupling sensor (see page 124) |
| 28 | X | X | Regulation without a temperature sensor for water supply (hydraulic coupling) | Break in the water temperature sensor at the system supply | Check the hydraulic coupling sensor (see page 124) |
| 30 | X | X | Burner lock | Short circuit in the water temperature sensor in the boiler | Check the water temperature sensor in the boiler (see page 124) |
| 38 | X | X | Burner lock | Break in the water temperature sensor in the boiler | Check the water temperature sensor in the boiler (see page 124) |
| 40 | X | Valve closure in the mixing valve | Short circuit in the water temperature sensor at the supply in heating circuit 2 (with mixer) | Check the water temperature sensor at the supply (see page 128) | |
| 44 | X | Valve closure in the mixing valve | Short circuit in the water temperature sensor at the supply in heating circuit 3 (with mixer) | Check the water temperature sensor at the supply (see page 128) | |
| 48 | X | Valve closure in the mixing valve | Break in the water temperature sensor at the supply in heating circuit 2 (with mixer) | Check the water temperature sensor at the supply (see page 128) | |
| 4C | X | Valve closure in the mixing valve | Break in the water temperature sensor at the supply in heating circuit 3 (with mixer) | Check the water temperature sensor at the supply (see page 128) | |
| 50 | X | X | No domestic hot water heating | Short circuit in the water temperature sensor in the heater | Check the water temperature sensor in the heater (see page 124) |
| 58 | X | X | No domestic hot water heating | Break in the water temperature sensor in the heater | Check the water temperature sensor in the heater (see page 124) |
| 90 | X | X | Regulation mode | Short circuit in temperature sensor 7 | Check sensor 7 on the solar system controller module. |
| 91 | X | X | Regulation mode | Short circuit in temperature sensor 10 | Check sensor 10 on the solar system controller module. |
| 92 | X | X | No domestic hot water heating | Short circuit in the temperature sensor for liquid in the collector | Check temperature sensor 6 on the solar system controller module or the sensor in the Vitosolic controller. |
| 93 | X | X | Regulation mode | Short circuit in the water temperature sensor in the heater | Check the sensor at connection S3 in the Vitosolic 100 controller. |
| 94 | X | X | No domestic hot water heating | Short circuit in the water temperature sensor in the heater | Check the water temperature sensor 5 on the solar system controller module or the sensor in the Vitosolic controller. |
| 98 | X | X | Regulation mode | Break in temperature sensor 7 | Check sensor 7 on the solar system controller module. |
| 99 | X | X | Regulation mode | Break in temperature sensor 10 | Check sensor 10 on the solar system controller module. |
| 9A | X | X | No domestic hot water heating | Break in the temperature sensor for liquid in the collector | Check temperature sensor 6 on the solar system controller module or the sensor in the Vitosolic controller. |
| 9B | X | X | Regulation mode | Break in the water temperature sensor in the heater | Check the sensor at connection S3 in the Vitosolic 100 controller. |
| 9C | X | X | No domestic hot water heating | Break in the water temperature sensor in the heater | Check the water temperature sensor 5 on the solar system controller module or the sensor in the Vitosolic controller. |
| 9E | X | X | Regulation mode | Too low or no volumetric flow in the solar circuit or activated temperature sensor | Check the solar circuit pump and the solar circuit. Confirm the error message. |
| 9F | X | X | Regulation mode | Error in the solar system controller module or the Vitosolic controller | Replace the solar system controller module or the Vitosolic controller |
| A6 | X | X | Regulation mode | Damaged protective anode | Replace the protective anode |
| A7 | X | Regulatory operation according to the factory setting | Control module damaged | Replace the control module | |
| B0 | X | X | Burner lock | Short circuit in the flue gas temperature sensor | Check the flue gas temperature sensor |
| B1 | X | X | Regulatory operation according to the factory setting | Communication error in the control module | Check the connections, replace the control module if necessary |
| B5 | X | X | Regulatory operation according to the factory setting | Internal error | Replace the controller |
| B7 | X | X | Burner lock | Error in the boiler encoding connector | Insert the boiler encoding connector or replace it if damaged |
| B8 | X | X | Burner lock | Break in the flue gas temperature sensor | Check the flue gas temperature sensor |
| BA | X | Mixing valve regulates to a supply temperature of 20°C. | Communication error in the supplementary set for heating circuit 2 (with mixer) | Check the connections and coding of the supplementary set. | |
| BB | X | Mixing valve regulates to a supply temperature of 20°C. | Communication error in the supplementary set for heating circuit 3 (with mixer) | Check the connections and coding of the supplementary set. | |
| BC | X | Regulatory operation without remote control | Communication error in the Vitotrol remote control for heating circuit 1 (without mixer) | Check the connections, cable, address code “A0”, and the coding switch of the remote control (see page 146). | |
| BD | X | Regulatory operation without remote control | Communication error in the Vitotrol remote control for heating circuit 2 (with mixer) | Check the connections, cable, address code “A0”, and the settings of the remote control (see page 146). | |
| BE | X | Regulatory operation without remote control | Communication error in the Vitotrol remote control for heating circuit 3 (with mixer) | Check the connections, cable, address code “A0”, and the settings of the remote control (see page 146). | |
| BF | X | Regulation mode | Incorrect LON communication module | Replace the LON communication module | |
| C1 | X | X | Regulation mode | Communication error in the supplementary set EA1 | Check the connections |
| C2 | X | X | Regulation mode | Communication error in the solar system controller module or Vitosolic controller | Check the solar system controller module or Vitosolic controller |
| C3 | X | X | Regulation mode | Communication error in the supplementary set AM1 | Check the connections |
| C4 | X | X | Regulation mode | Communication error in the supplementary set Open Therm | Check the Open Therm supplementary set |
| Cd | X | X | Regulation mode | Communication error in Vitocom 100 (KM-BUS) | Check the connections, Vitocom 100, and address code “95” |
| CE | X | X | Regulation mode | Communication error in the external supplementary set | Check the connections and address code “2E” |
| CF | X | Regulation mode | Communication error in the LON communication module | Replace the LON communication module | |
| d6 | X | X | Regulation mode | Entry DE1 at supplementary set EA1 reports an error | Clear the error in the appropriate device |
| d7 | X | X | Regulation mode | Entry DE2 at supplementary set EA1 reports an error | Clear the error in the appropriate device |
| d8 | X | X | Regulation mode | Entry DE3 at supplementary set EA1 reports an error | Clear the error in the appropriate device |
| dA | X | Regulatory operation, independent of room temperature influence | Short circuit in the room temperature sensor in heating circuit 1 (without mixer) | Check the room temperature sensor in heating circuit 1 | |
| db | X | Regulatory operation, independent of room temperature influence | Short circuit in the room temperature sensor in heating circuit 2 (with mixer) | Check the room temperature sensor in heating circuit 2 | |
| dC | X | Regulatory operation, independent of room temperature influence | Short circuit in the room temperature sensor in heating circuit 3 (with mixer) | Check the room temperature sensor in heating circuit 3 | |
| dd | X | Regulatory operation, independent of room temperature influence | Break in the room temperature sensor in heating circuit 1 (without mixer) | Check the room temperature sensor in heating circuit 1 and the remote control settings (see page 146) | |
| dE | X | Regulatory operation, independent of room temperature influence | Break in the room temperature sensor in heating circuit 2 (with mixer) | Check the room temperature sensor in heating circuit 2 and the remote control settings (see page 146) | |
| dF | X | Regulatory operation, independent of room temperature influence | Break in the room temperature sensor in heating circuit 3 (with mixer) | Check the room temperature sensor in heating circuit 3 and the remote control settings (see page 146) | |
| E0 | X | Regulation mode | Error in external LON receivers | Check the connections and LON receivers | |
| E1 | X | X | Burner malfunction | Ionization current during calibration is too high | Check the distance of the ionization electrode from the burner cup (see page 23). When operating with air suction, avoid high accumulation of dust in the combustion air. Press the reset button R. |
| E2 | X | X | Burner malfunction | Too low ionization current during calibration. Flow sensor turned off. | Ensure sufficient circulation water. Check the flow sensor. Remove any blockage and clear any clogs. Press the reset button R. |
| E3 | X | X | Burner malfunction | Too low heat recovery during calibration. Temperature sensor turned off. | Ensure sufficient heat recovery. Press the reset button R. |
| E4 | X | X | Burner lock | 24V supply voltage error | Replace the controller. |
| E5 | X | X | Burner lock | Flame signal amplifier error | Replace the controller. |
| E7 | X | X | Burner malfunction | Ionization current during calibration is too low | Check the gas supply (gas pressure and flow sensor), check the universal gas regulator and connecting cable. Check the gas type assignment.
Check the ionization electrode:
Press the reset button R. |
| EA | X | X | Burner malfunction | Ionization current during calibration is outside the required range (too large deviation from the previous value) | Check the flue gas system, remove the cause of flue gas recirculation if necessary. When operating with air suction, avoid high dust accumulation in the combustion air.
Press the reset button R. After several unsuccessful reset attempts, replace the boiler encoding plug and press the reset button R. |
| Eb | X | X | Burner malfunction | Flame goes out during repeated calibration attempts | Check the distance of the ionization electrode from the burner cup. Check the gas type assignment.
Check the flue gas system, remove the cause of flue gas recirculation if necessary. Press the reset button R. |
| EC | X | X | Burner malfunction | Calibration parameters error | Press the reset button R or replace the boiler encoding plug, then press the reset button R. |
| Ed | X | X | Burner malfunction | Internal error | Replace the controller. |
| EE | X | X | Burner malfunction | No flame signal during burner startup or the signal is too weak | Check the gas supply (gas pressure and flow sensor), check the universal gas regulator. Check the ionization electrode and connecting cable.
Check the ignition system:
Check the condensate drain. Press the reset button R. |
| EF | X | X | Burner malfunction | Flame goes out immediately after being formed (during the safety time) | Check the gas supply (gas pressure and flow sensor). Check the flue gas/air inlet system for recirculation of flue gases.
Check the ionization electrode (replace if necessary):
Press the reset button R. |
| F0 | X | X | Burner lock | Internal error | Replace the controller. |
| F1 | X | X | Burner malfunction | Flue temperature limiter activated | Check the filling level of the heating installation. Bleed the system.
Press the reset button R after the flue gas system has cooled down. |
| F2 | X | X | Burner malfunction | Temperature limiter activated | Check the filling level of the heating installation. Check the circulation pump. Bleed the system. Check the temperature limiter and the connecting cables.
Press the reset button R. |
| F3 | X | X | Burner malfunction | Flame signal present during burner startup | Check the ionization electrode and connecting cable. Press the reset button R. |
| F8 | X | X | Burner malfunction | Fuel valve closes with delay | Check the universal gas regulator. Check both control channels. Press the reset button R. |
| F9 | X | X | Burner malfunction | Too low fan speed at burner startup | Check the fan and connecting cables, electrical supply, and fan control system. Press the reset button R. |
| FA | X | X | Burner malfunction | Fan did not reach resting state | Check the fan and connecting cables, and its control system. Press the reset button R. |
| FC | X | X | Burner malfunction | Damaged universal gas regulator, incorrect valve modulation control or blocked flue gas path | Check the universal gas regulator. Check the flue gas system. Press the reset button R. |
| Fd | X | X | Displayed burner malfunction and other errors b7 | No boiler encoding plug | Connect the boiler encoding plug. Press the reset button R.
If the malfunction persists, replace the controller. |
| FE | X | X | Burner lock or malfunction | Damaged boiler encoding plug or main board or incorrect boiler encoding plug | Press the reset button R. If the malfunction persists, check the boiler encoding plug or replace the controller or boiler encoding plug. |
| FF | X | X | Burner lock or malfunction | Internal error or blocked reset button R | Turn the device back on. If the device cannot be started, replace the controller. |