Independent technical reference
Viessmann
14 published entries
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Equipment covered
Documented codes
Air-to-water heat pump 8
E112Viessmann E112 on a Vitocal 100-AW heat pump: anti-freeze protectionHigh· Heat pumpsE14Viessmann E14 on a Vitocal heat pump: high pressure protectionMedium· Heat pumpsE16Viessmann E16 on a Vitocal heat pump: low refrigerant pressureMedium· Heat pumpsE18Viessmann E18 on a Vitocal 100-AW heat pump: water flow protectionMedium· Heat pumpsE19Viessmann E19 on a Vitocal heat pump: electric heater overloadMedium· Heat pumpsE20Viessmann E20 on a Vitocal heat pump: discharge overtemperatureMedium· Heat pumpsE25Viessmann E25 on a Vitocal heat pump: inlet and outlet water gapMedium· Heat pumpsE26Viessmann E26 on a Vitocal heat pump: outlet water overheatingMedium· Heat pumps
Gas boiler 6
347Viessmann 347 on a Vitodens boiler: flue gas recirculationHigh· Boilers357Viessmann 357 on a Vitodens boiler: insufficient gas supplyHigh· Boilers65Viessmann 65 on a Vitodens boiler: no flame signal at startHigh· BoilersF4Viessmann F4: confirm the boiler model firstHigh· Boilers345Viessmann 345 on a Vitodens boiler: temperature limiter trippedMedium· Boilers74Viessmann 74 on a Vitodens boiler: system pressure too lowMedium· Boilers