Boiler fault codes

Buderus boiler faults: fault codes, causes and parts (page 2 of 2)

Codes 151 to 174 of the 174 fault codes for Buderus. Looking for a specific code? Use the search on the first page.

Buderus boiler fault codes 151 to 174 of 174

The code list is split over 2 pages. Looking for a specific code? Use the search on the first page: it searches all 174 codes in one go.

Code	Cause
V9Y500 501 502 503	Fault in internal SAFe relay. Internal electronics fault in the SAFe.
VCO568	Water pressure sensor fault (cable break). Open circuit of water pressure sensor (voltage > 3.5 V).
VCO568	Water pressure sensor fault (cable break).
VCO569	Water pressure sensor fault (short circuit).
VCO569	Water pressure sensor fault (short circuit). Short circuit of water pressure sensor (voltage < 0.5 V).
VCY566	Return temperature < -5 °C (open circuit). The controller receives unrealistic values from the return sensor.
VCY566	Return temperature < –5 °C (open circuit)
VCY567	Return temperature > 130 °C (short circuit)
VCY567	Return temperature > 130 °C (short circuit). The controller receives unrealistic values from the return sensor.
VCY573	Flow temperature < -5 °C (open circuit). The controller receives unrealistic values from the flow temperature sensor. Flow temperature > 130 °C (short circuit). The controller receives unrealistic values from the flow temperature sensor.
VCY573	Flow temperature < -5 °C (open circuit)
VCY574	Flow temperature > 130 °C (short circuit)
VCY574	Flow temperature > 130 °C (short circuit). The controller receives unrealistic values from the flow temperature sensor.
VEE601	Flow temperature sensor measurement. Successive flow temperature measurements differ too much from one another.
VEE601	Boiler temperature sensor measurement (dual sensor).
VEE612	Return temperature sensor measurement
VEE612	Return sensor measurement. Successive return temperature measurements differ too much from one another.
VEE613	Flow temperature sensor measurement. Successive flow temperature measurements differ too much from one another.
VEE613	Flow temperature sensor measurement
VLL571	Too many restarts despite release.
VLL571	Too many restarts despite reset. 15 restarts occurred in direct succession. I.e. after the reset the same problem was still present. Caution: this error can only be reset using the button on the SAFe. Flow temperature sensor measurement. Successive measurements of the flow temperature deviate too much from each other. Return sensor measurement. Successive measurements of the return temperature deviate too much from each other.
VLP570	Too many resets via the interface. Too many resets were received via the interface within a certain time. Caution: this error can only be reset using the button on the SAFe.
VLP570	Too many releases via the interface.
rE	A boiler reset is being carried out.

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