BRAND
Error codes for Buderus
34 manufacturer-linked boiler codes. Confirm exact model compatibility before using any guidance.
34 results
0YBuderus Gas boiler 0Y: Sensor temperature rise too highBuderus · Gas boiler→1017Buderus Gas boiler 1017: Water pressure too lowBuderus · Gas boiler→2 E-YBuderus Gas boiler 2 E-Y: Heating circuit circulation problemBuderus · Gas boiler→227Buderus Gas boiler 227: Flame not detectedBuderus · Gas boiler→2971Buderus Gas boiler 2971: Operating pressure too lowBuderus · Gas boiler→2972Buderus Gas boiler 2972: Mains supply voltage too lowBuderus · Gas boiler→2EBuderus Gas boiler 2E: Low heating system pressureBuderus · Gas boiler→356Buderus Gas boiler 356: Boiler supply voltage too lowBuderus · Gas boiler→3ABuderus Gas boiler 3A: Fan speed too lowBuderus · Gas boiler→3A-YBuderus Gas boiler 3A-Y: Fan not operatingBuderus · Gas boiler→3CBuderus Gas boiler 3C: Air pressure differential switch not operating as expectedBuderus · Gas boiler→3YBuderus Gas boiler 3Y: Differential pressure switch fails to openBuderus · Gas boiler→4CBuderus Gas boiler 4C: Overheat safety lockoutBuderus · Gas boiler→4LBuderus Gas boiler 4L: Low heating system water pressureBuderus · Gas boiler→4YBuderus Gas boiler 4Y: Heating flow temperature sensor faultBuderus · Gas boiler→5LBuderus Gas boiler 5L: BUS communication interruptionBuderus · Gas boiler→6ABuderus Gas boiler 6A: Ignition unsuccessful or flame not detectedBuderus · Gas boiler→6CBuderus Gas boiler 6C: Flame detected after burner is offBuderus · Gas boiler→7 C-LBuderus Gas boiler 7 C-L: Electrical supply voltage too lowBuderus · Gas boiler→9 U-LBuderus Gas boiler 9 U-L: Unrecognized KIM module or gas valve faultBuderus · Gas boiler→9PBuderus Gas boiler 9P: KIM module not recognizedBuderus · Gas boiler→B3Buderus Gas boiler B3: Condensate heat exchanger level sensor faultBuderus · Gas boiler→C7Buderus Gas boiler C7: Fan not runningBuderus · Gas boiler→CCBuderus Gas boiler CC: Outdoor temperature sensor not recognizedBuderus · Gas boiler→CLBuderus Gas boiler CL: Domestic hot-water sensor faultBuderus · Gas boiler→d7Buderus Gas boiler d7: Gas valve assembly check requiredBuderus · Gas boiler→ECBuderus Gas boiler EC: Outdoor temperature sensor not detectedBuderus · Gas boiler→ELBuderus Gas boiler EL: KIM or Logamatic BC20 control faultBuderus · Gas boiler→EL-8YBuderus Gas boiler EL-8Y: Internal electronics faultBuderus · Gas boiler→EPBuderus Gas boiler EP: Reset button pressed too longBuderus · Gas boiler→FdBuderus Gas boiler Fd: Reset held more than 30 secondsBuderus · Gas boiler→H11Buderus Gas boiler H11: Domestic hot-water temperature sensor faultBuderus · Gas boiler→I IBuderus Gas boiler I I: Fan speed setting not selectedBuderus · Gas boiler→PBuderus Gas boiler P: Appliance type not definedBuderus · Gas boiler→