Carrier 40SMC***N Installation, Operation And Maintenance Manual

Also see for 40SMC N Series: Owner's manual Installation instructions Instructions

Contents

GB - 1140SMC---NE N G L I S HATTENTION:Before performing any service or maintenance operations,turn OFF the main power switch.In order to obtain maximum performance, special attention shouldbe paid to the following points:• Inspect and clean the outdoor unit, especially the heatexchanger coil.• Ensure that all rubber and insulating joints are in goodcondition.• Check and clean condenser drain pan of the indoor unit; thesame check must be made for the heat pump outdoor units.• Check tightness of electric connections.• Clean or replace the air filter of the indoor unit.Maintenance and serviceaaa Air filterAlarm code, troubleshooting chart and final raccomendationAlarm codeA diagnostic system is contained in the electronic card to “check”the system integrity.When the diagnostic system is under alarm, the red LED installedonto the main card flashes as indicated below:• 0.5 sec. ON and 0.5 sec. OFF.• The number of flashes depends on the error that has been detected.Not all of the errors can be reset (see table below).Error Error Resettablecode *2 Condensation discharging pump NO3 Air temperature sensor YES4 Internal battery temp. sensor YES5 External battery temp. sensor YES6** Dirty filters YES7 Outdoor unit error YES8 Low voltage YES9 Compressor malfunction ***10 EEPROM YES11 Serial number YES12 Address/zone number YES13 Gas flow distributor (GFD) YES* NO: Turn off power supply to the system, check and repair, if necessary.Turn on power.YES: Check** If this diagnostic system is enabled.*** YES, for the first 4 errors.A series of possible faults is related below, as well as the probablecauses and suggested solutions.However, in the event of a unit malfunction, it is advisable todisconnect the power supply and ascertain the cause.ATTENTION:Most operations must be carried out by skilled personnel.Troubleshooting chartSymptoms / Cause / REMEDYUnit does not start• No power supply: CHECK .• Main switch open: CLOSE SWITCH .• Current wires cut: RIPARARE O SOSTITUIRE CEPAIR OR REPLACE( BY SKILLED PERSONNEL ).• Fuses blown: REPLACE AND CHECK CONSUMPTIONS .• Protector tripped: RESET AS DESCRIBED .• Thermostat wrongly adjusted: SELECT A MORE SUITABLE TEMPERATURE .Unit provides less cooling or heating than normal• Dirty air filter: CLEAN FILTER .• Wrongly adjusted or faulty thermostat:SELECT A MORE SUITABLE TEMPERATURE , OR REPLACE THERMOSTAT .Unit operates continuously, or stops and starts very frequently(by skilled personnel).• Refrigerant loss: CHECK AND ADD THE NECESSARY QUANTITY (R - 410 A ).• Faulty compressor (Outdoor unit): REPLACE COMPRESSOR .• Faulty compressor contactor (Outdoor unit): CHANGE CONTACTOR .Unusual noises or strange vibrations (by skilled personnel).• Fan motor fixtures loose: TIGHTEN FIXTUR• Badly adjusted panels: ADJUST PROPERLY• Unit wrongly installed: CHECK INSTALLATION• A foreign object, tool, etc, has got into the fan: REMOVE THE FOREIGNOBJECTFan and motor not operate (by skilled personnel).• Faulty motor or capacitor: REPLACE .• Loose connections: CHECK AND TIGHTEN PROPERLYFinal recommendationsAll units undergo strict Quality Control testing before leaving thefactory.Whatsmore, all the elements included, such as the controlsystem, electrical equipment, etc., are qualified by our QualityControl Department, and laboratory tested in the harshestpossible conditions.Nevertheless, after leaving the factory, it is possible that theseelements may be demaged due to causes beyond our control. Inan event, and if the unit fails to operate correctly: the user shouldnot manipulate any of the internal elements. In the event thatinspection and repair work is required, it should be left to aspecialized technician.All recommendations concerning unit installation are intended tobe orientative.The installing firm should do the job according to thecharacteristics of the project, and in all events comply with theofficial rulling for air conditioning and refrigeration installations.IMPORTANT:The manufacturer declines all responsability for malfunctionresulting from abuse.

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