Carrier 30RB Series Manual
Also see for AQUASnap 30RB: Installation, operation & maintenance instructionsOperation and maintenance instructionsInstallation instructionsInstallation, operation and maintenance instructionsControls and Troubleshooting
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30RB/30RQGB - 15E N G L I S HTroubleshootingA list of possible faults, as well as the probable cause and suggestedsolutions is shown as follows.In the event of a unit malfunction it is recommended to disconnect thepower supply and ascertain the cause.Symptoms Cause REMEDYUnit does not start:- No power supply;CONNECT POWER SUPPLY.- Main switch open;CLOSE SWITCH.- Low line voltage;CHECK VOLTAGE AND REMEDY THE DEFICIENCY.- A protection has tripped;RESET.- Contactor stuck open;CHECK AND IF NECESSARY REPLACE CONTACTOR.- Seized compressor;CHECK AND IF NECESSARY REPLACE COMPRESSOR.- Loose electrical connections;CHECK CONNECTIONS.Unit runs continuously or starts and stops frequently:- Defective compressor contactor;- CHECK AND IF NECESSARY REPLACE CONTACTOR.- Defective compressor;CHECK AND IF NECESSARY REPLACE COMPRESSOR.- Refrigerant losses;CHECK AND ADD THE NECESSARY QUANTITY.- Total water flow too lowCHECK FOR PRESSURE DROP IN THE HYDRAULIC CIRCUIT.- Static pressure in the hydraulic circuit too low;CHECK IT ON THE PRESSURE GAUGE AND RESTORE IT IF NECESSARY.Unit continuously cuts out at low pressure:- Refrigerant losses;CHECK AND ADD THE NECESSARY QUANTITY.- Low water flow in the exchanger;CHECK WATER PUMP.- Unit start-up delay;WAIT UNTIL THE SYSTEM HAS STABILISED.Unit continuously cuts out at high pressure:- Defective high pressurestat;CHECK AND IF NECESSARY REPLACE PRESSURESTAT.- Blocked expansion valve;CHECK AND REPLACE IF NECESSARY.- Blocked filter drier;CHECK AND IF NECESSARY REPLACE FILTER.- The outdoor fan/s does/do not work;CHECK THE CONDITION OF THE FAN MOTOR /S AND ITS /THEIR ELECTRICAL CONNECTIONS.- Obstructed or dirty battery;REMOVE THE OBSTRUCTION OR CLEAN THE BATTERY.Abnormal system noise:- Piping vibration;SUPPORT PIPING.- Noisy compressor;CHECK AND CHANGE IF NECESSARY.- Hissing expansion valve;CHECK AND ADD REFRIGERANT IF NECESSARY.- Badly fitting panels;INSTALL CORRECTLY.Compressor loses oil:- Leaking refrigeration circuit;REPAIR LEAK .Water loss:- Defective entering or leaving connections;CHECK AND TIGHTEN IF NECESSARY.The unit does not defrost(only for 30RQ units):- Four-way reversing valve faulty;CHECK AND REPLACE THE VALVE IF NECESSARY.- Defrost sensor broken;CHECK AND REPLACE THE SENSOR IF NECESSARY. |
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