Carrier AQUASNAP 30RA/RH Operation & Maintenance Instructions Manual

Carrier AQUASNAP 30RA/RH Operation & Maintenance Instructions Manual Manual pdf 35 page image

35ALARMCODE123567910111213141516171821222324ALARM NAMECompressor A1 failureCompressor A2 failureCompressor A3 failureCompressor B1 failureCompressor B2 failureCompressor B3 failureHeat exchanger leaving fluidthermistor failureHeat exchanger entering fluidthermistor failureCHWS fluid thermistor failure(master/slave)Defrost sensor fault, circuit ADefrost sensor fault, circuit BOAT sensor failureDischarge pressure transducerfailure, Circuit ADischarge pressure transducerfailure, Circuit BSuction pressure transducerfailure, Circuit ASuction pressure transducerfailure, Circuit BCCN/clock board failureLoss of communication withslave boardLoss of communication withcompressor slave boardLoss of communication with PD-4 x DO slave boardALARM DESCRIPTIONMotor safety input has opened due tocompressor overtemperature protection.As aboveAs aboveAs aboveAs aboveAs aboveThermistor outside rangeAs aboveAs aboveAs aboveAs aboveAs aboveVoltage delivered by the sensor is incorrectValue read by the sensor is outside rangeVoltage delivered by the sensor is incorrectValue read by the sensor is outside rangeThe clock board is no longer detectedCommunication has been lost with the slaveboard (circuit B control)Communication has been lost with thecompressor A3 + B3 control boardCommunication has been lost with theelectric heating stage control boardACTION TAKEN BYTHE CONTROLCompressor is shutdownAs aboveAs aboveAs aboveAs aboveAs aboveUnit shut downAs aboveAs aboveCircuit shut down, if unitis in heating modeAs aboveAs aboveCircuit A shut downCircuit B shut downCircuit A shut downCircuit B shut downUnit shut downCircuit B shut downCompressors A3 + B3shut downElectric heating stagesshut downRESET TYPEManualAs aboveAs aboveAs aboveAs aboveAs aboveAutomatic, if temp. measured by sensorreturns to permitted range of valuesAs aboveAs aboveAs aboveAs aboveAs aboveAutomatic if the voltage delivered by thesensor returns to normalAs aboveAs aboveAs aboveAutomatic if board is detected againAutomatic if communication is re-establishedAs aboveAs abovePROBABLE CAUSECompressor overheatAs aboveAs aboveAs aboveAs aboveAs aboveFaulty thermistor, wiring error ordisconnectionAs aboveAs aboveAs aboveAs aboveAs aboveDefective transducer, wiring faultAs aboveAs aboveAs aboveDefective CCN/clock boardBus wiring fault, wrong software in slaveboard or defective slave boardAs aboveAs aboveALARM CODE DESCRIPTIONS6 - DIAGNOSTICS - TROUBLESHOOTING6.1 - GeneralThe PRO-DIALOG control system has many fault tracing aidfunctions. The local interface and its various menus give accessto all unit operating conditions. The test function makes itpossible to run a quick test of all devices on the unit. If anoperating fault is detected, an alarm is activated and an alarmcode is stored in the Alarm menu.6.2 - Displaying alarmsThe alarm LEDs on the summary interface (see section 4.1)give a quick display of the status of each circuit and the unit asa whole.- A flashing LED shows that the circuit is operating butthere is an alarm.- A steady LED shows that the circuit has been shut downdue to a fault.The Alarm menu on the main interface displays up to 5 faultcodes that are active on the unit.6.3 - Resetting alarmsWhen the cause of the alarm has been corrected the alarm canbe reset, depending on the type, either automatically on returnto normal, or manually when action has been taken on the unit.Alarms can be reset even if the unit is running.RESET OF ACTIVE ALARMSOPERATION ITEM NUMBER ITEM VALUE PRESS MENU2-DIGIT DISPLAY 4-DIGIT DISPLAY BUTTON LEDHold down the MENUbutton until the LED foralarms lights. The 4-digit display shows thenumber of activealarms (2 in thisexample).Press the Enter buttonuntil "rESEt ALARrM" isshown in the 4-digitdisplay.Press the Enter buttonagain to validate thereset. "Good" isdisplayed for 2 secondsthen, "2 ALArM" andthen, "no ALArM".00 2 ALArM0 rESEt ALArM0 Goodthen, 2 ALthen, no ALArMThis means that an alarm can be reset without stopping themachine. In the event of a power supply interrupt, the unitrestarts automatically without the need for an external com-mand. However, any faults active when the supply is inter-rupted are saved and may in certain cases prevent a circuit or aunit from restarting.A manual reset must be run from the main interface using thefollowing procedure:6.4 - Alarm codesThe following list gives a complete description of each alarm code and its possible cause.

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