APPLIANCE GUIDES
Boiler error codes
Manufacturer-documented model-specific error codes.
358 results
E01Arçelik Gas boiler E01: Ignition failureArçelik · Gas boiler→E02Arçelik Gas boiler E02: False flame detectionArçelik · Gas boiler→E03Arçelik Gas boiler E03: Overheating errorArçelik · Gas boiler→E05Arçelik Gas boiler E05: Fan feedback errorArçelik · Gas boiler→E09Arçelik Gas boiler E09: Gas valve feedback errorArçelik · Gas boiler→E12Arçelik Gas boiler E12: Control memory errorArçelik · Gas boiler→E15Arçelik Gas boiler E15: Temperature change sensor errorArçelik · Gas boiler→E16Arçelik Gas boiler E16: Return temperature sensor lockArçelik · Gas boiler→E17Arçelik Gas boiler E17: Flow temperature sensor lockArçelik · Gas boiler→E18Arçelik Gas boiler E18: NTC sensor test errorArçelik · Gas boiler→E21Arçelik Gas boiler E21: Main control board faultArçelik · Gas boiler→E33Arçelik Gas boiler E33: Return sensor faultArçelik · Gas boiler→E35Arçelik Gas boiler E35: Flow temperature sensor faultArçelik · Gas boiler→F13Arçelik Gas boiler F13: Reset lockArçelik · Gas boiler→F34Arçelik Gas boiler F34: Low supply voltageArçelik · Gas boiler→F37Arçelik Gas boiler F37: Low heating-system pressureArçelik · Gas boiler→F39Arçelik Gas boiler F39: Outdoor sensor errorArçelik · Gas boiler→F40Arçelik Gas boiler F40: High heating-system pressureArçelik · Gas boiler→F41Arçelik Gas boiler F41: Automatic filling activeArçelik · Gas boiler→F42Arçelik Gas boiler F42: Automatic filling incompleteArçelik · Gas boiler→F43Arçelik Gas boiler F43: Pressure remains low after fillingArçelik · Gas boiler→F47Arçelik Gas boiler F47: Water pressure switch disconnectedArçelik · Gas boiler→F50Arçelik Gas boiler F50: Hot-water cylinder sensor faultArçelik · Gas boiler→F51Arçelik Gas boiler F51: PT1000 sensor faultArçelik · Gas boiler→F52Arçelik Gas boiler F52: Domestic hot-water sensor faultArçelik · Gas boiler→F53Arçelik Gas boiler F53: Heat exchanger safety fuse faultArçelik · Gas boiler→F81Arçelik Gas boiler F81: Sensor test faultArçelik · Gas boiler→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→ErrDemirDöküm Boiler Err: User interface communication errorDemirDöküm · Boiler→F00DemirDöküm Boiler F00: Flow temperature sensor open circuitDemirDöküm · Boiler→F01DemirDöküm Gas boiler F01: Overtemperature protectionDemirDöküm · Gas boiler→F02DemirDöküm Gas boiler F02: Domestic hot-water NTC faultDemirDöküm · Gas boiler→F03DemirDöküm Gas boiler F03: Heating flow NTC sensor faultDemirDöküm · Gas boiler→F04DemirDöküm Gas boiler F04: Ignition faultDemirDöküm · Gas boiler→F05DemirDöküm Gas boiler F05: Air pressure switch faultDemirDöküm · Gas boiler→F06DemirDöküm Gas boiler F06: Heating return NTC sensor faultDemirDöküm · Gas boiler→F07DemirDöküm Gas boiler F07: Gas valve control faultDemirDöküm · Gas boiler→F08DemirDöküm Gas boiler F08: Return circuit overtemperatureDemirDöküm · Gas boiler→F09DemirDöküm Gas boiler F09: Air pressure switch not resetting as expectedDemirDöküm · Gas boiler→F10DemirDöküm Gas boiler F10: Heating pressure or circulation issue (model-dependent)DemirDöküm · Gas boiler→F11DemirDöküm Gas boiler F11: Excessive heating circuit temperature differentialDemirDöküm · Gas boiler→F12DemirDöküm Gas boiler F12: Low mains voltage indicationDemirDöküm · Gas boiler→F13DemirDöküm Gas boiler F13: NTC sensor connection faultDemirDöküm · Gas boiler→F14DemirDöküm Gas boiler F14: Ignition timing lockoutDemirDöküm · Gas boiler→F15DemirDöküm Gas boiler F15: Flame loss ignition lockoutDemirDöküm · Gas boiler→F20DemirDöküm Boiler F20: Overtemperature safety shutdownDemirDöküm · Boiler→F22DemirDöküm Boiler F22: Heating system water pressure too lowDemirDöküm · Boiler→F23DemirDöküm Boiler F23: Excessive flow/return temperature differenceDemirDöküm · Boiler→F26DemirDöküm Boiler F26: Gas valve motor circuit faultDemirDöküm · Boiler→F27DemirDöküm Boiler F27: False flame / ionisation signalDemirDöküm · Boiler→F28DemirDöküm Boiler F28: Ignition failureDemirDöküm · Boiler→F29DemirDöküm Boiler F29: Flame loss during operationDemirDöküm · Boiler→F32DemirDöküm Boiler F32: Fan / air system faultDemirDöküm · Boiler→F49DemirDöküm Boiler F49: eBUS communication voltage faultDemirDöküm · Boiler→F61DemirDöküm Boiler F61: Gas valve control circuit faultDemirDöküm · Boiler→F62DemirDöküm Boiler F62: Gas valve closing delayDemirDöküm · Boiler→F63DemirDöküm Boiler F63: Electronic EEPROM faultDemirDöküm · Boiler→F64DemirDöküm Boiler F64: Electronics / NTC faultDemirDöküm · Boiler→F65DemirDöküm Boiler F65: Control board overheatingDemirDöküm · Boiler→F67DemirDöküm Boiler F67: Flame control electronics faultDemirDöküm · Boiler→F68DemirDöküm Boiler F68: Unstable flame signalDemirDöküm · Boiler→F70DemirDöküm Boiler F70: Control board / user interface mismatchDemirDöküm · Boiler→F71DemirDöküm Boiler F71: Flow temperature sensor faultDemirDöküm · Boiler→F72DemirDöküm Boiler F72: Flow/return sensor mismatchDemirDöküm · Boiler→F73DemirDöküm Boiler F73: Water pressure sensor signal too lowDemirDöküm · Boiler→F74DemirDöküm Boiler F74: Water pressure sensor signal too highDemirDöküm · Boiler→F76DemirDöküm Boiler F76: Thermal fuse faultDemirDöküm · Boiler→F77DemirDöküm Boiler F77: Flue damper / condensate pump faultDemirDöküm · Boiler→F83DemirDöküm Boiler F83: Heating circuit temperature rise not detectedDemirDöküm · Boiler→F84DemirDöküm Boiler F84: Flow/return sensor reading discrepancyDemirDöküm · Boiler→F85DemirDöküm Boiler F85: Flow/return sensor installation mismatchDemirDöküm · Boiler→F86DemirDöküm Boiler F86: Underfloor heating external safety circuit faultDemirDöküm · Boiler→E01E.C.A. Gas boiler E01: Ignition faultE.C.A. · Gas boiler→E02E.C.A. Gas boiler E02: Unexpected flame signalE.C.A. · Gas boiler→E03E.C.A. Gas boiler E03: Overtemperature warningE.C.A. · Gas boiler→E05E.C.A. Gas boiler E05: Fan feedback missingE.C.A. · Gas boiler→E06E.C.A. Gas boiler E06: Fan speed signal out of rangeE.C.A. · Gas boiler→E07E.C.A. Gas boiler E07: Heat exchanger or flue temperature too highE.C.A. · Gas boiler→E08E.C.A. Gas boiler E08: Flame detection circuit faultE.C.A. · Gas boiler→E09E.C.A. Gas boiler E09: Gas valve feedback faultE.C.A. · Gas boiler→E12E.C.A. Gas boiler E12: EEPROM electronic memory check faultE.C.A. · Gas boiler→E15E.C.A. Gas boiler E15: Temperature sensor measurement deviationE.C.A. · Gas boiler→E16E.C.A. Gas boiler E16: No temperature change detected by flow sensorE.C.A. · Gas boiler→E17E.C.A. Gas boiler E17: No temperature change detected by return sensorE.C.A. · Gas boiler→E18E.C.A. Gas boiler E18: Excessive sensor temperature variationE.C.A. · Gas boiler→E21E.C.A. Gas boiler E21: Analog-to-digital converter faultE.C.A. · Gas boiler→E33E.C.A. Gas boiler E33: Return water sensor short or open circuitE.C.A. · Gas boiler→E35E.C.A. Gas boiler E35: Flow water sensor short or open circuitE.C.A. · Gas boiler→conVaillant Boiler con: Board-to-display communication faultVaillant · Boiler→F13Vaillant Gas boiler F13: Cylinder temperature sensor short circuitVaillant · Gas boiler→F20Vaillant Gas boiler F20: Overtemperature safety cut-outVaillant · Gas boiler→F22Vaillant Gas boiler F22: Insufficient heating water or low pressureVaillant · Gas boiler→F23Vaillant Gas boiler F23: Excessive flow/return temperature differenceVaillant · Gas boiler→F25Vaillant Gas boiler F25: Flue-gas temperature too highVaillant · Gas boiler→F27Vaillant Gas boiler F27: Flame detected while burner is offVaillant · Gas boiler→F28Vaillant Gas boiler F28: Ignition failure at start-upVaillant · Gas boiler→F29Vaillant Gas boiler F29: Flame lost during operation and re-ignition unsuccessfulVaillant · Gas boiler→F32Vaillant Boiler F32: Fan faultVaillant · Boiler→F49Vaillant Boiler F49: eBUS communication faultVaillant · Boiler→F61Vaillant Gas boiler F61: Gas valve control faultVaillant · Gas boiler→F62Vaillant Gas boiler F62: Gas valve shutoff or flame detection delayVaillant · Gas boiler→F63Vaillant Boiler F63: Electronics EEPROM faultVaillant · Boiler→F64Vaillant Boiler F64: Electronics / NTC faultVaillant · Boiler→F65Vaillant Boiler F65: Control board overtemperatureVaillant · Boiler→F67Vaillant Boiler F67: Flame sensing electronics faultVaillant · Boiler→F70Vaillant Boiler F70: Device identification mismatchVaillant · Boiler→F71Vaillant Boiler F71: Flow temperature sensor faultVaillant · Boiler→F72Vaillant Boiler F72: Flow/return sensor mismatchVaillant · Boiler→F73Vaillant Boiler F73: Water pressure sensor signal too lowVaillant · Boiler→F74Vaillant Boiler F74: Water pressure sensor signal too highVaillant · Boiler→F75Vaillant Gas boiler F75: No expected pressure change upon pump startVaillant · Gas boiler→F77Vaillant Boiler F77: Flue damper / condensate pump faultVaillant · Boiler→227Bosch Gas boiler 227: No flame detectedBosch · Gas boiler→356Bosch Gas boiler 356: Supply voltage too lowBosch · Gas boiler→1017Bosch Gas boiler 1017: Heating-system water pressure too lowBosch · Gas boiler→2971Bosch Gas boiler 2971: Operating pressure too lowBosch · Gas boiler→2972Bosch Gas boiler 2972: Mains voltage too lowBosch · Gas boiler→0Y-A1Bosch Gas boiler 0Y-A1: Heating system or pressure warningBosch · Gas boiler→9UBosch Gas boiler 9U: Coding key not detectedBosch · Gas boiler→A8Bosch Gas boiler A8: BUS communication interruptedBosch · Gas boiler→C1-C7Bosch Gas boiler C1-C7: Fan not operating: manufacturer groupBosch · Gas boiler→D3-D5Bosch Gas boiler D3-D5: Internal fault groupBosch · Gas boiler→E2Bosch Gas boiler E2: Flow-temperature sensor faultBosch · Gas boiler→E9Bosch Gas boiler E9: Heating safety or temperature-related warningBosch · Gas boiler→EABosch Gas boiler EA: No flame detectedBosch · Gas boiler→F0Bosch Gas boiler F0: Internal faultBosch · Gas boiler→FABosch Gas boiler FA: Flame-detection or gas-shutoff safety faultBosch · Gas boiler→H11Bosch Gas boiler H11: Cylinder temperature sensor not detectedBosch · Gas boiler→A7Bosch Gas boiler A7: Cylinder temperature sensor not detectedBosch · Gas boiler→b1Bosch Gas boiler b1: Coding key not detectedBosch · Gas boiler→b2/b3Bosch Gas boiler b2/b3: Internal fault groupBosch · Gas boiler→C6Bosch Gas boiler C6: Fan or air-flow problemBosch · Gas boiler→CCBosch Gas boiler CC: Outdoor-temperature sensor not detectedBosch · Gas boiler→CEBosch Gas boiler CE: Heating-system water pressure lowBosch · Gas boiler→F1Bosch Gas boiler F1: Internal faultBosch · Gas boiler→FdBosch Gas boiler Fd: Reset button held too longBosch · Gas boiler→AdBosch Gas boiler Ad: Cylinder temperature sensor not detectedBosch · Gas boiler→C1Bosch Gas boiler C1: Fan speed too lowBosch · Gas boiler→C4Bosch Gas boiler C4: Differential pressure switch faultBosch · Gas boiler→C7Bosch Gas boiler C7: Fan not operatingBosch · Gas boiler→d7Bosch Gas boiler d7: Gas valve train requires checkingBosch · Gas boiler→A9Bosch Gas boiler A9: Domestic hot-water sensor warningBosch · Gas boiler→ACBosch Gas boiler AC: Module detection faultBosch · Gas boiler→d5Bosch Gas boiler d5: External temperature sensor faultBosch · Gas boiler→E01Baymak Gas boiler E01: Ignition unsuccessfulBaymak · Gas boiler→E02Baymak Gas boiler E02: Unexpected flame detectionBaymak · Gas boiler→E03Baymak Gas boiler E03: Overheating faultBaymak · Gas boiler→E04Baymak Gas boiler E04: Pressure switch faultBaymak · Gas boiler→E05Baymak Gas boiler E05: Pressure switch faultBaymak · Gas boiler→E06Baymak Gas boiler E06: Pressure switch faultBaymak · Gas boiler→E07Baymak Gas boiler E07: Flue safety thermostat faultBaymak · Gas boiler→E09Baymak Gas boiler E09: Gas valve feedback faultBaymak · Gas boiler→E12Baymak Gas boiler E12: Electronic control board faultBaymak · Gas boiler→E21Baymak Gas boiler E21: Electronic control board faultBaymak · Gas boiler→F02Baymak Gas boiler F02: Unexpected flame detectionBaymak · Gas boiler→F13Baymak Gas boiler F13: Reset lockoutBaymak · Gas boiler→F22Baymak Gas boiler F22: Low voltage faultBaymak · Gas boiler→F23Baymak Gas boiler F23: Pressure switch faultBaymak · Gas boiler→F25Baymak Gas boiler F25: Electronic control board faultBaymak · Gas boiler→F31Baymak Gas boiler F31: Central-heating NTC sensor faultBaymak · Gas boiler→F32Baymak Gas boiler F32: Outdoor temperature sensor faultBaymak · Gas boiler→F33Baymak Gas boiler F33: Domestic hot-water NTC sensor faultBaymak · Gas boiler→F37Baymak Gas boiler F37: Low system water pressureBaymak · Gas boiler→F59Baymak Gas boiler F59: Gas valve faultBaymak · Gas boiler→E13Baymak Gas boiler E13: EEPROM or firmware faultBaymak · Gas boiler→E08Baymak Gas boiler E08: Low system water pressureBaymak · Gas boiler→E10Baymak Gas boiler E10: High system water pressureBaymak · Gas boiler→E11Baymak Gas boiler E11: Transducer faultBaymak · Gas boiler→E31Baymak Gas boiler E31: TCF sensor faultBaymak · Gas boiler→E33Baymak Gas boiler E33: TCF sensor deviationBaymak · Gas boiler→E17Baymak Gas boiler E17: Flue sensor faultBaymak · Gas boiler→E24Baymak Gas boiler E24: Return sensor faultBaymak · Gas boiler→E30Baymak Gas boiler E30: Fan signal missingBaymak · Gas boiler→E88Baymak Gas boiler E88: Remote controller communication missingBaymak · Gas boiler→E23Baymak Gas boiler E23: Outdoor sensor faultBaymak · Gas boiler→E25Baymak Gas boiler E25: System frost warningBaymak · Gas boiler→A.00.34Baymak Gas boiler A.00.34: Configured outdoor sensor not detectedBaymak · Gas boiler→A.02.06Baymak Gas boiler A.02.06: Low system pressureBaymak · Gas boiler→A.02.18Baymak Gas boiler A.02.18: Configuration or OBD faultBaymak · Gas boiler→A.02.36Baymak Gas boiler A.02.36: Functional device disconnectedBaymak · Gas boiler→A.02.37Baymak Gas boiler A.02.37: Passive functional device disconnectedBaymak · Gas boiler→A.02.45Baymak Gas boiler A.02.45: Communication connection faultBaymak · Gas boiler→A.02.46Baymak Gas boiler A.02.46: Device priority configuration faultBaymak · Gas boiler→A.02.48Baymak Gas boiler A.02.48: Device function configuration faultBaymak · Gas boiler→A.02.49Baymak Gas boiler A.02.49: Function cycle failed to startBaymak · Gas boiler→A.02.54Baymak Gas boiler A.02.54: OpenTherm bus power supply faultBaymak · Gas boiler→A.02.55Baymak Gas boiler A.02.55: Serial number missing or invalidBaymak · Gas boiler→A.02.76Baymak Gas boiler A.02.76: Parameter memory fullBaymak · Gas boiler→H.00.42Baymak Gas boiler H.00.42: Pressure sensor absent or defectiveBaymak · Gas boiler→H.01.00Baymak Gas boiler H.01.00: Temporary gas valve to board communication lossBaymak · Gas boiler→H.01.05Baymak Gas boiler H.01.05: Excessive flow and return temperature differenceBaymak · Gas boiler→H.01.08Baymak Gas boiler H.01.08: Heating water temperature rising too fastBaymak · Gas boiler→H.01.14Baymak Gas boiler H.01.14: Maximum flow water temperature reachedBaymak · Gas boiler→H.01.18Baymak Gas boiler H.01.18: Temporary insufficient water circulationBaymak · Gas boiler→H.01.21Baymak Gas boiler H.01.21: Domestic hot-water flow heats too quicklyBaymak · Gas boiler→H.02.00Baymak Gas boiler H.02.00: Reset in progressBaymak · Gas boiler→H.02.02Baymak Gas boiler H.02.02: CN1/CN2 configuration pendingBaymak · Gas boiler→H.02.03Baymak Gas boiler H.02.03: CN1/CN2 configuration invalidBaymak · Gas boiler→H.02.05Baymak Gas boiler H.02.05: Parameter memory incompatible with boardBaymak · Gas boiler→H.02.07Baymak Gas boiler H.02.07: Heating circuit pressure too lowBaymak · Gas boiler→H.02.09Baymak Gas boiler H.02.09: Partial lockout detectedBaymak · Gas boiler→H.02.10Baymak Gas boiler H.02.10: Complete lockout detectedBaymak · Gas boiler→H.03.00Baymak Gas boiler H.03.00: Safety subsystem not identifiedBaymak · Gas boiler→H.03.01Baymak Gas boiler H.03.01: Comfort circuit internal communication faultBaymak · Gas boiler→H.03.02Baymak Gas boiler H.03.02: Temporary flame lossBaymak · Gas boiler→H.03.05Baymak Gas boiler H.03.05: Input voltage too lowBaymak · Gas boiler→H.03.17Baymak Gas boiler H.03.17: Periodic safety check in progressBaymak · Gas boiler→E.00.04Baymak Gas boiler E.00.04: Return temperature sensor disconnectedBaymak · Gas boiler→E.00.05Baymak Gas boiler E.00.05: Return temperature sensor short circuitBaymak · Gas boiler→E.00.06Baymak Gas boiler E.00.06: Return sensor not detectedBaymak · Gas boiler→E.00.07Baymak Gas boiler E.00.07: Excessive return temperature differenceBaymak · Gas boiler→E.00.16Baymak Gas boiler E.00.16: Cylinder temperature sensor disconnectedBaymak · Gas boiler→E.00.17Baymak Gas boiler E.00.17: Cylinder temperature sensor short circuitBaymak · Gas boiler→E.00.20Baymak Gas boiler E.00.20: Flue gas sensor reading below rangeBaymak · Gas boiler→E.00.21Baymak Gas boiler E.00.21: Flue gas sensor reading above rangeBaymak · Gas boiler→E.01.04Baymak Gas boiler E.01.04: Five flame losses within 24 hoursBaymak · Gas boiler→E.01.12Baymak Gas boiler E.01.12: Return water hotter than flow waterBaymak · Gas boiler→E.01.17Baymak Gas boiler E.01.17: Persistent insufficient water circulationBaymak · Gas boiler→E.01.20Baymak Gas boiler E.01.20: Maximum flue gas temperature exceededBaymak · Gas boiler→E.02.13Baymak Gas boiler E.02.13: Blocked by external control inputBaymak · Gas boiler→E.02.15Baymak Gas boiler E.02.15: External board communication timeoutBaymak · Gas boiler→E.02.17Baymak Gas boiler E.02.17: Persistent gas valve to board communication lossBaymak · Gas boiler→E.02.35Baymak Gas boiler E.02.35: Critical safety device disconnectedBaymak · Gas boiler→E.02.47Baymak Gas boiler E.02.47: External device connection unsuccessfulBaymak · Gas boiler→E.04.00Baymak Gas boiler E.04.00: Level 5 safety parameters invalidBaymak · Gas boiler→E.04.01Baymak Gas boiler E.04.01: Flow temperature sensor short circuitBaymak · Gas boiler→E.04.02Baymak Gas boiler E.04.02: Flow temperature sensor disconnectedBaymak · Gas boiler→E.04.03Baymak Gas boiler E.04.03: Maximum flow temperature exceededBaymak · Gas boiler→E.04.07Baymak Gas boiler E.04.07: Flow sensor readings disagreeBaymak · Gas boiler→E.04.08Baymak Gas boiler E.04.08: Safety temperature limit exceededBaymak · Gas boiler→E.04.09Baymak Gas boiler E.04.09: Flue sensor readings disagreeBaymak · Gas boiler→E.04.10Baymak Gas boiler E.04.10: Burner ignition failed after four attemptsBaymak · Gas boiler→E.04.11Baymak Gas boiler E.04.11: VPS gas valve test failedBaymak · Gas boiler→E.04.12Baymak Gas boiler E.04.12: Ignition inhibited by false flame detectionBaymak · Gas boiler→E.04.13Baymak Gas boiler E.04.13: Fan rotor blockedBaymak · Gas boiler→E.04.14Baymak Gas boiler E.04.14: Persistent burner temperature deviationBaymak · Gas boiler→E.04.17Baymak Gas boiler E.04.17: Gas valve control circuit faultBaymak · Gas boiler→E.04.18Baymak Gas boiler E.04.18: Flow water below minimum set temperatureBaymak · Gas boiler→E.04.19Baymak Gas boiler E.04.19: Flow sensor communication faultBaymak · Gas boiler→E.04.20Baymak Gas boiler E.04.20: Flow sensor maximum deviationBaymak · Gas boiler→E.04.23Baymak Gas boiler E.04.23: Internal gas control valve blockageBaymak · Gas boiler→E.04.54Baymak Gas boiler E.04.54: Gas valve control circuit faultBaymak · Gas boiler→10Viessmann Gas boiler 10: Outdoor temperature sensor short circuitViessmann · Gas boiler→18Viessmann Gas boiler 18: Outdoor temperature sensor circuit openViessmann · Gas boiler→19Viessmann Gas boiler 19: Wireless outdoor temperature sensor communication lostViessmann · Gas boiler→20Viessmann Gas boiler 20: System flow temperature sensor short circuitViessmann · Gas boiler→28Viessmann Gas boiler 28: System flow temperature sensor circuit openViessmann · Gas boiler→30Viessmann Gas boiler 30: Boiler water temperature sensor short circuitViessmann · Gas boiler→38Viessmann Gas boiler 38: Boiler water temperature sensor circuit openViessmann · Gas boiler→40Viessmann Gas boiler 40: Heating circuit 2 flow sensor short circuitViessmann · Gas boiler→44Viessmann Gas boiler 44: Heating circuit 3 flow sensor short circuitViessmann · Gas boiler→50Viessmann Gas boiler 50: Hot-water cylinder temperature sensor short circuitViessmann · Gas boiler→92Viessmann Gas boiler 92: Solar collector temperature sensor short circuitViessmann · Gas boiler→93Viessmann Gas boiler 93: Solar return sensor short circuitViessmann · Gas boiler→94Viessmann Gas boiler 94: Solar cylinder temperature sensor short circuitViessmann · Gas boiler→98Viessmann Gas boiler 98: Solar control temperature sensor open circuitViessmann · Gas boiler→1AViessmann Gas boiler 1A: Left flow sensor faultViessmann · Gas boiler→1BViessmann Gas boiler 1B: Right flow sensor faultViessmann · Gas boiler→1FViessmann Gas boiler 1F: Excessive differential flow rateViessmann · Gas boiler→4CViessmann Gas boiler 4C: Heating circuit 3 flow sensor open circuitViessmann · Gas boiler→9AViessmann Gas boiler 9A: Solar collector sensor open circuitViessmann · Gas boiler→9CViessmann Gas boiler 9C: Solar cylinder temperature sensor open circuitViessmann · Gas boiler→9EViessmann Gas boiler 9E: Low solar circuit flow or temperature limiter tripViessmann · Gas boiler→9FViessmann Gas boiler 9F: Solar controller or Vitosolic module faultViessmann · Gas boiler→A3Viessmann Gas boiler A3: Flue gas temperature sensor incorrectly positionedViessmann · Gas boiler→A4Viessmann Gas boiler A4: System pressure above permitted limitViessmann · Gas boiler→A7Viessmann Gas boiler A7: Programming unit faultViessmann · Gas boiler→B0Viessmann Gas boiler B0: Flue gas temperature sensor short circuitViessmann · Gas boiler→B1Viessmann Gas boiler B1: Programming unit communication faultViessmann · Gas boiler→B5Viessmann Gas boiler B5: Controller internal faultViessmann · Gas boiler→B7Viessmann Gas boiler B7: Boiler coding card faultViessmann · Gas boiler→B8Viessmann Gas boiler B8: Flue gas temperature sensor open circuitViessmann · Gas boiler→BAViessmann Gas boiler BA: Heating circuit 2 mixer extension communication faultViessmann · Gas boiler→BBViessmann Gas boiler BB: Heating circuit 3 mixer extension communication faultViessmann · Gas boiler→BCViessmann Gas boiler BC: Vitotrol heating circuit 1 remote communication faultViessmann · Gas boiler→C1Viessmann Gas boiler C1: EA1 extension communication faultViessmann · Gas boiler→C2Viessmann Gas boiler C2: Solar controller communication faultViessmann · Gas boiler→C3Viessmann Gas boiler C3: AM1 extension communication faultViessmann · Gas boiler→C4Viessmann Gas boiler C4: OpenTherm extension communication faultViessmann · Gas boiler→C5Viessmann Gas boiler C5: KM-BUS variable-speed pump communication faultViessmann · Gas boiler→E3Viessmann Gas boiler E3: Insufficient heat transfer during calibrationViessmann · Gas boiler→E4Viessmann Gas boiler E4: 24V supply voltage faultViessmann · Gas boiler→E5Viessmann Gas boiler E5: Flame amplifier faultViessmann · Gas boiler→EBViessmann Gas boiler EB: Repeated flame loss during calibrationViessmann · Gas boiler→ECViessmann Gas boiler EC: Calibration parameter faultViessmann · Gas boiler→EDViessmann Gas boiler ED: Internal controller faultViessmann · Gas boiler→F0Viessmann Gas boiler F0: Burner locked due to internal controller faultViessmann · Gas boiler→F1Viessmann Gas boiler F1: Flue gas temperature limit exceededViessmann · Gas boiler→F2Viessmann Gas boiler F2: Boiler temperature limiter triggeredViessmann · Gas boiler→F6Viessmann Gas boiler F6: Large difference between boiler temperature sensorsViessmann · Gas boiler→F8Viessmann Gas boiler F8: Fuel valve closes too lateViessmann · Gas boiler→FFViessmann Gas boiler FF: Internal fault or reset button blockedViessmann · Gas boiler→A01Ferroli Gas boiler A01: Burner ignition failureFerroli · Gas boiler→A02Ferroli Gas boiler A02: Flame signal detected with burner offFerroli · Gas boiler→A05Ferroli Gas boiler A05: Fan faultFerroli · Gas boiler→A06Ferroli Gas boiler A06: No flame after ignition phaseFerroli · Gas boiler→F07Ferroli Gas boiler F07: High flue gas temperatureFerroli · Gas boiler→F14Ferroli Gas boiler F14: High flue gas temperatureFerroli · Gas boiler→A07Ferroli Gas boiler A07: High flue gas temperatureFerroli · Gas boiler→F08Ferroli Gas boiler F08: Overtemperature protection triggeredFerroli · Gas boiler→A08Ferroli Gas boiler A08: Overtemperature protection triggeredFerroli · Gas boiler→F09Ferroli Gas boiler F09: Return temperature overheat protectionFerroli · Gas boiler→A09Ferroli Gas boiler A09: Return temperature overheat protectionFerroli · Gas boiler→F10Ferroli Gas boiler F10: Flow temperature sensor faultFerroli · Gas boiler→A10Ferroli Gas boiler A10: Flow temperature sensor faultFerroli · Gas boiler→F11Ferroli Gas boiler F11: Return temperature sensor faultFerroli · Gas boiler→A11Ferroli Gas boiler A11: Return temperature sensor faultFerroli · Gas boiler→F12Ferroli Gas boiler F12: Domestic hot water sensor faultFerroli · Gas boiler→F13Ferroli Gas boiler F13: Flue gas probe faultFerroli · Gas boiler→A13Ferroli Gas boiler A13: Flue gas probe faultFerroli · Gas boiler→A14Ferroli Gas boiler A14: Flue duct safety device triggeredFerroli · Gas boiler→F34Ferroli Gas boiler F34: Mains voltage below 170VFerroli · Gas boiler→F37Ferroli Gas boiler F37: Incorrect system water pressureFerroli · Gas boiler→F39Ferroli Gas boiler F39: Outdoor temperature probe faultFerroli · Gas boiler→F41Ferroli Gas boiler F41: Maximum temperature differential protectionFerroli · Gas boiler→F42Ferroli Gas boiler F42: Sensor monitoring protection triggeredFerroli · Gas boiler→A42Ferroli Gas boiler A42: Sensor monitoring protection triggeredFerroli · Gas boiler→F43Ferroli Gas boiler F43: Heat exchanger protection triggeredFerroli · Gas boiler→F56Ferroli Gas boiler F56: Calibration faultFerroli · Gas boiler→A56Ferroli Gas boiler A56: Calibration faultFerroli · Gas boiler→F61Ferroli Gas boiler F61: AGC01 controller faultFerroli · Gas boiler→A61Ferroli Gas boiler A61: AGC01 controller faultFerroli · Gas boiler→A62Ferroli Gas boiler A62: No communication between controller and gas valveFerroli · Gas boiler→A64Ferroli Gas boiler A64: Maximum consecutive resets exceededFerroli · Gas boiler→F66Ferroli Gas boiler F66: Firmware load failureFerroli · Gas boiler→
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