Haier 1U24GR4EAA Service Manual

Contents

Haier 1U24GR4EAA Service Manual Manual pdf 17 page image

Domestic air conditionerCode indication Description ReferencePageindoorIndoor Malfunction51eruliafrosneserutarepmetmooR1E51eruliafrosnesegnahcxe-taeH2E61rorreMORPEEroodnI4E71noitcnuflamrotomnafroodnI41EThe code indication that is listed above is the main faultTroubleshootingCaution e sure to turn off power switch before connect or disconnect connector, or else parts damagemay be occurred.8.4.2.1Thermistor or Related AbnormalityIndoor Display E1: Room temperature sensor failureE2: Heat-exchange sensor failureThe temperatures detected by the thermistors are used to determine thermistor errorswhen the thermistor input is more than 4.92V or less than 0.08V during compressor.noitarepoNote: The values vary slightly in some modelsFaulty connector connectionFaulty thermistorFaulty PCB* Caution Be sure to turn off power switch before connect or disconnect connector, or elseparts damage may be occurred.8.4Codes and Description8.4.1Problem Symptoms and MeasuresSymptom Check Item Details of MeasureNone of the unitsoperatesCheck the power supply. Check to make sure that the rated voltage issupplied.Check the indoor PCB Check to make sure that the indoor PCB is brokenEquipmentoperates but doesnot cool, or doesnot heat (only forheat pump)Diagnosis by serviceport pressure andoperating current. Check for insufficient gas.Large operatingnoise andvibrationsCheck the installationcondition.Check to make sure that the required spaces forinstallation (specified in the Technical Guide, etc.) areprovided.8.4.2 Error Codes and Description indoor display15Service diagnosisPage .Page .Page .Page .Method ofMalfunctionDetectionMalfunctionDetectionConditionsSupposedCausesYesTroubleshootingB