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Viessmann Boilers

Viessmann Combi Boilers

Viessmmann combi boilers a wall mounted units that require a small space and are most often located in a kitchen or bathroom and hidden within a cupboard and allow easy access to hot water from the mains water supply to radiators and taps. Viessmmann combi boilers are energy efficient units with low running costs that are ideally suited to apartments and small to medium sized houses with 1 to 2 bathrooms. Viessmmann combi boilers don’t require hot water tanks or cylinders as a regular boiler or system boiler does therefore making these Viessmmann combi boilers cheaper to install.
BoilerEfficiencyOutputWarrantyMPNBoiler Type
Viessmann B1KC Vitodens 100-W 19kW Gas Combi Boiler89.2%19kW5 YearsCombi
Viessmann B1KC Vitodens 100-W 26kW Gas Combi Boiler89.1%26kW5 YearsCombi
Viessmann B1KC Vitodens 100-W 30kW Gas Combi Boiler88.9%30kW5 yearsCombi
Viessmann B1KC Vitodens 100-W 35kW Gas Combi Boiler89.3%35kW5 YearsCombi
Viessmann B1LD Vitodens 111-W 26kW Gas Combi Boiler89.5%26kW5 YearsCombi
Viessmann B1LD Vitodens 111-W 35kW Gas Combi Boiler89.5%35kW5 YearsCombi
Viessmann B2KB Vitodens 200-W 26kW Gas Combi Boiler89%26kW3 - 5 YearsCombi
Viessmann B2KB Vitodens 200-W 30kW Gas Combi Boiler89%30kW3 - 5 YearsCombi
Viessmann B2KB Vitodens 200-W 35kW Gas Combi Boiler89.1%35kW3 - 5 YearsCombi
Viessmann B2TB Vitodens 222-F 19kW Storage Gas Combi Boiler89.3%19kW3 - 5 YearsCombi
Viessmann B2TB Vitodens 222-F 26kW Storage Gas Combi Boiler89.4%26kW3 - 5 YearsCombi
Viessmann B2TB Vitodens 222-F 35kW Storage Gas Combi Boiler89.5%35kW3 - 5 yearsCombi
Viessmann B2UB Vitodens 242-F 19kW Storage Gas Combi Boiler89.3%19kW2 YearsCombi
Viessmann B2UB Vitodens 242-F 26kW Storage Gas Combi Boiler89.3%26kW2 yearsCombi
Viessmann BPJD Vitodens 050-W 29kW Gas Combi Boiler89%29kW3 YearsCombi
Viessmann BPJD Vitodens 050-W 35kW Gas Combi Boiler89%35kW3 yearsCombi

Viessmann Regular Boilers

BoilerEfficiencyOutputWarrantyMPNBoiler Type
Viessmann WB1B Vitodens 100-W 13kW Gas Regular Boiler89.00%13kW5 yearsRegular
Viessmann WB1B Vitodens 100-W 16kW Gas Regular Boiler89.1%16kW5 YearsRegular
Viessmann WB1B Vitodens 100-W 19kW Gas Regular Boiler89%19kW5 YearsRegular
Viessmann WB1B Vitodens 100-W 26kW Gas Regular Boiler89.3%26kW5 YearsRegular
Viessmann WB1B Vitodens 100-W 35kW Gas Regular Boiler88.7%35kW5 yearsRegular
Fault Code System Behaviour Cause of Problem
02 Burner control switches to lockout Safety chain was activated
04, 05, 06, 08 Burner control switches to lockout Fan speed too high/low at start
07, 09 Burner control switches to lockout Basic level of air pressure threshold in standby mode not correct
0A Burner control switches to lockout Fault, fan speed
0D Burner control switches to lockout Reset button pressed repeatedly or while burner is running
1A, 1B Burner blocked Flow sensor 1, 2 faulty
1F Burner blocked Differential flow rate too large
25 Boiler operates with high boiler water temperature Emissions test switch turned to “hand symbol” for 30 minutes already
26 Boiler operates with continuous relay test Setting mode for maximum or minimum rated input active for 30 minutes already
35 Boiler does not activate Reset button (pressed while burner is OFF) with emissions test switch turned to “hand symbol”
A2 N/A KM-BUS fault to Vitocom
A5 N/A Short circuit / open circuit
Fault Code System Behaviour Cause of Problem
Vitodens 200 Burner control switches to lockout. Fan does not idle after auto reset (incorrect fan rpm). Severe wind conditions in vent system
Vitodens 100-W Burner blocked Insufficient water flow, incorrect flow direction, defective flow switch.
Fault Code System Behaviour Cause of Problem
Vitodens 100-W Burner blocked Insufficient power supply
Vitodens 200 Burner control switches to lockout Flame signal still present after switching off
Fault Code System Behaviour Cause of Problem
Vitodens 222-F Control mode Code “0F” is only displayed in the fault history
Vitotronic 300 / Vitotronic 300-K, with Vitotronic 300 / Vitodens 200-W / Vitocontrol-S, with Vitotronic 100 Control mode / Controlled operation Boiler service required
Vitotronic 200 / 300 Normal operation Boiler service required
Vitocontrol-S, MW1 with Vitotronic 100 / Vitotronic 300-K, MW1S with Vitotronic 100 Control mode Maintenance – “0F” is only displayed in the fault history
Fault Code System Behaviour Cause of Problem
Vitodens 200-W / 222-F / Vitotronic 300 / 200/ 200-H / 050/200-H / 300-K / vitocontrol-S Boiler operates based on outdoor temperature of 32°F / 0°C Short circuit – outdoor temperature sensor
Vitotronic 300-K, MW2S with Vitotronic 100 / Vitodens 100-W (combiPLUS) / 200-w / Vitocontrol-S, WB2B with Vitotronic 100 Controls as if the outdoor temperature / Constant Mode Outdoor temperature sensor shorted out
Fault Code System Behaviour Cause of Problem
Vitodens 200-W / 222-F / Vitotronic 300 / 200/ 200-H / 050/200-H / 300-K / vitocontrol-S Boiler operates based on outdoor temperature of 32°F Short circuit – outdoor temperature sensor
Vitotronic 300-K, MW2S with Vitotronic 100 / Vitodens 100-W (combiPLUS) / 200-w / Vitocontrol-S, WB2B with Vitotronic 100 Control as if the outdoor temperature is in constant mode Outdoor temperature sensor shorted out
Fault Code System Behaviour Cause of Problem
Vitodens 100 / 200-W / 222-F / Vitotronic 300-K With 100 / Vitocontrol-S Boiler operates based on outdoor temperature of 32°F / 0°C / Constant Mode Outdoor temperature sensor cable broken
Vitotronic / 100 / 200 / 300 / 050/200-H /300-K / Vitocontrol-S, MW1 with Vitotronic 100 Operates on basis of 32°F / 0°C outdoor temperature Open circuit – Outdoor temperature sensor
Vitotronic 200-H / Vitotronic 300-K, MW1B with Vitotronic 300 / Vitotronic 300-K, MW2B with Vitotronic 200 Controls as if the outdoor temperature Lead break – Outdoor temperature sensor
Vitotronic 050/200-H Activates after 0°C / 32°F outdoor temperature Cable break – Outdoor temperature sensor
Vitodens 100-W Burner in fault mode DIP switch S2 is set to “ON”
Fault Code System Behaviour Cause of Problem
Vitotronic 300 Activates after 0°C / 32°F outdoor temperature Communication fault, wireless outdoor temperature sensor
Fault Code System Behaviour Cause of Problem
Vitocontrol-S with Vitotronic 100 / Vitotronic 300 / 300-K / 200 / 100 Stand-alone control unit without supply temperature sensor (possibly supply temperature not high enough) Short circuit – Common supply temperature sensor
Vitocontrol-S with Vitotronic 100 / Vitotronic 300-K, with Vitotronic 200 Vitocontrol-S, controls in a stand-alone manner w/o supply temperature sensor (supply temperature may not be high enough) Common supply temperature sensor shorted out
Vitocrossal 300 Regulates without supply temperature sensor (low-loss header) Short circuit – System Flow temperature sensor
Vitodens 200-W / 222-F Regulates without supply temperature sensor (low-loss header) Short circuit – System supply temperature sensor
Vitotronic 050/200-H< / 200 / 200-H / 300 Mixing valve closed Short circuit – Supply temperature sensor / mixing valve circuit M1
Vitotronic 300-K, with Vitotronic 100 Vitotronic 300-K, MW1S controls in a stand-alone manner w/o strap-on sensor (supply temperature may not be high enough) Short circuit – Strap-on temperature sensor
Vitodens 200-W Regulates without supply temperature sensor (low-loss header) System supply temperature sensor shorted out
Fault Code System Behaviour Cause of Problem
Vitotronic 200 / 300 Operation without influence of return water temperature Short circuit – Return water temperature sensor
Fault Code System Behaviour Cause of Problem
Vitocontrol-S with Vitotronic 100 Vitocontrol-S, VD2/CT3/CM2 controls in a stand-alone manner w/o supply temperature sensor (supply temperature may not be high enough) Open circuit – common supply temperature sensor
Vitocontrol-S with Vitotronic 100 / Vitotronic 300-K,with Vitotronic 100 Vitocontrol-S, WB2B controls in a stand-alone manner w/o supply temperature sensor (supply temperature might not be high enough) Common supply temperature sensor cable broken
Vitocrossal 300 / Vitodens 200-W / 22-F Regulates without supply temperature sensor (low-loss header) System supply temperature sensor cable broken
Vitotronic 050/200-H Mixing valve closes Cable break – Supply temperature sensor
Vitotronic 050/200-H Mixing valve is closed Open circuit – Supply temperature sensor of mixing valve circuit M1
Vitotronic 200-H / Vitotronic 200 / 300 Mixing valve is being closed Lead break – Supply temperature sensor in heating circuit with mixing valve M1 (heating circuit 1)
Vitotronic 300 Vitotronic / 300-K with Vitotronic 300 / 200 Stand-alone control unit without supply temperature sensor (possibly supply temperature not high enough) Lead break, common supply temperature sensor
Vitotronic 300-K with Vitotronic 100 Vitotronic 300-K, MW1S controls in a stand-alone manner w/o strap-on sensor (supply temperature may not be high enough) Open circuit – Strap-on temperature sensor
Fault Code System Behaviour Cause of Problem
Vitotronic 200 / 300 Normal operation without influence of return water temperature Open circuit 1 or 2 – Return water temperature sensor (of mixing valve circuit 1)
Fault Code System Behaviour Cause of Problem
Vitocontrol-S, with Vitotronic 100 / Vitocrossal 300 / Vitodens 200-W / 222-F / Vitotronic 100 / 200 / 300 Adjustable high limit burner is started and stopped Short circuit – Boiler water temperature sensor
Vitocontrol-S with Vitotronic 100 / Vitodens 100-W (CombiPLUS)/ 200-1 Burner blocked Boiler water temperature sensor shorted out
Fault Code System Behaviour Cause of Problem
Vitodens – 200-W / 222-F / COMBIPLUS Burner blocked Boiler water temperature sensor cable broken
Vitotronic 100 / 200 / 300 / Vitocontrol-S with Vitotronic 100 Burner is switched on and off by the adjustable high limit Open circuit – Boiler temperature sensor
Vitotronic 300-K with Vitotronic 300 / Vitotronic 300-K with Vitotronic 300 The burner is started and stopped via a temperature controller Lead break, boiler water temperature sensor
Vitodens 100-W Burner blocked Boiler water temperature sensor lead broken