Carrier 38XTZ 007-024 Installation, Operation And Maintenance Instructions

39FINAL RECOMMENDATIONSThe unit you have purchased has undergone strict qualitycontrol procedures before leaving the factory.All components, including the control systems and electricalequipment, etc., are certified by our Quality ControlDepartment, and tested under the harshest possible operatingconditions in our laboratories. However, after leaving thefactory, it is possible that one or more of these elements may bedamaged due to causes beyond our control. In such an event,the user should not work on any of the internal components,or subject the unit to operating conditions which are notspecified in this manual, since serious damage may result andthe guarantee would be invalidated. Repair and maintenancework should always be left to the installer.IMPORTANT: All recommendations concerning unitinstallation are intended to be as a guideline. Qualifiedtechnicians or installers must carry out the installationcorrectly and in accordance with applicable local, nationaland European standards and with the design conditions. Theyshould also comply with all applicable regulations for airconditioning and refrigeration installations.NOTE: The manufacturer does not accept responsibility forany malfunctions resulting from misuse of the 38XTZ and40ABZ/ALZ units, or from an incorrect installation and thedamage caused by this.Table 16 - Troubleshooting chartSymptoms Cause RemedyUnit does not start No power supply Connect power supplyMain switch open Close switchLow line voltage Check voltage and remedy the deficiencyA protection has tripped ResetContactor stuck open Replace contactorSeized compressor Replace compressorUnit starts and stops frequently Defective compressor contactor Replace contactorDefective compressor Replace compressorRefrigerant losses Check. Remove the charge. Repair leaks.Evacuate. Recharge with refrigerantUnit continuously cuts out at Defective low pressurestat Replace pressurestatlow pressure Refrigerant losses Check and add the necessary quantityIndoor fan does not operate Check fan motorUnit continuously cuts out at Defective high pressurestat Replace pressurestathigh pressure Refrigerant losses Check and correctOutdoor fan does not operate Check fan motorAbnormal system noise Piping vibration Support piping and check drainageNoisy compressor Check and change if necessaryBadly fitting panels Install correctlyWater loss Defective drainage connections Check and tighten if necessaryCompressor loses oil Leak in system Repair leakGreen and red Master Link I LEDs on See pages 29 to 31 See pages 29 to 31

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