Category
HVAC
HVAC codes with evidence-led diagnosis.
172 published entries
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Published error entries
ALARMA-CO-3-PITIDOS-LARGOSEi Electronics three long beeps on CO alarm: CO dangerCritical· Ei ElectronicsALARMA-CO-4-CHIRRIDOSFireAngel FA6813 four-chirp red alarm on CO detector: dangerCritical· FireAngelCUATRO-PITIDOS-COFirst Alert four beeps on CO alarm: carbon monoxide dangerCritical· First AlertARO-ROJO-CONest Protect red ring on CO alarm: carbon monoxide emergencyCritical· Google NestARO-ROJO-HUMONest Protect red ring on smoke alarm: smoke emergency alertCritical· Google NestCUATRO-PITIDOS-COKidde four beeps on CO alarm: carbon monoxide emergency alertCritical· KiddeP1Carrier P1 on split air conditioner: high or low voltage tripHigh· CarrierA1Daikin room AC A1: indoor control-board abnormalityHigh· DaikinA3Daikin room AC A3: drain-level control abnormalityHigh· DaikinA5Daikin room AC A5: high-pressure peak or freeze-protection eventHigh· DaikinA6Daikin room AC A6: indoor fan-motor abnormalityHigh· DaikinC4Daikin room AC C4: heat-exchanger temperature-sensor problemHigh· DaikinC9Daikin room AC C9: room-temperature thermistor abnormalityHigh· DaikinE1Daikin room AC E1: outdoor control-board defectHigh· DaikinE3Daikin E3 on an air conditioner: high pressure switch trippedHigh· DaikinE5Daikin room AC E5: inverter-compressor motor overheatHigh· DaikinE6Daikin room AC E6: compressor startup defectHigh· DaikinE7Daikin room AC E7: outdoor fan-motor malfunctionHigh· DaikinF3Daikin room AC F3: discharge-pipe temperature malfunctionHigh· DaikinL4Daikin room AC L4: inverter heat-sink temperature riseHigh· DaikinL5Daikin room AC L5: inverter instantaneous overcurrentHigh· DaikinU0Daikin room AC U0: outdoor-unit refrigerant shortageHigh· DaikinU2Daikin room AC U2: outdoor-unit supply-voltage defectHigh· DaikinU4Daikin room AC U4: indoor/outdoor communication problemHigh· DaikinE4Daitsu E4 on an air conditioner: refrigerant leak or system faultHigh· DaitsuA001Ecoforest A001 pellet stove: low air intake vacuum alarmHigh· EcoforestA099Ecoforest A099 pellet stove: no pellets or ignition failureHigh· EcoforestA11Edilkamin A11 pellet stove: safety pressure switch alarmHigh· Edilkamin3-PITIDOS-AMARILLO-48-SEi Electronics three yellow beeps on smoke alarm: end of lifeHigh· Ei ElectronicsDEPR ALARMExtraflame DEPR ALARM on pellet stove: depression alarmHigh· Extraflame2-PITIDOS-AMBAR-40-SFireAngel FA6813 two beeps and amber light on CO alarm: faultHigh· FireAngelCINCO-CHIRRIDOS-MINUTOFirst Alert five chirps on smoke or CO alarm: end of life warningHigh· First AlertTRES-CHIRRIDOS-MINUTOFirst Alert three chirps on smoke or CO alarm: malfunction alertHigh· First Alert65Fujitsu 65 on air conditioner: outdoor unit IPM faultHigh· FujitsuA1Fujitsu A1 on an air conditioner: high compressor discharge temperatureHigh· FujitsuARO-AMARILLO-AVISONest Protect yellow ring Heads-Up on smoke and CO alarmHigh· Google NestFALLO-SENSORNest Protect sensor failure on smoke and CO alarm: replace itHigh· Google NestFIN-DE-VIDANest Protect expired on smoke and CO alarm: replace the unitHigh· Google NestE1Gree E1 on an air conditioner: high pressure protectionHigh· GreeF0Gree F0 on an air conditioner: refrigerant leakage protectionHigh· GreePUGree PU on air conditioner: outdoor capacitor charging faultHigh· Gree13Hisense 13 on air conditioner: compressor overheat protectorHigh· HisenseEL0CJohnson EL0C on an air conditioner: refrigerant leak detectedHigh· JohnsonCHIRRIDO-CADA-30-SKidde chirp every 30 seconds on smoke or CO alarm: end of lifeHigh· KiddeERRKidde ERR on digital CO alarm: end of life or sensor malfunctionHigh· KiddeCH38LG CH38 on an air conditioner: low refrigerant protectionHigh· LGA01MCZ A01 pellet stove: failed ignition, flame did not lightHigh· MCZA02MCZ A02 pellet stove: no flame, fire went out abnormallyHigh· MCZ