Troubleshooting - PRODIS NT Series User Manual

SYMPTOM
UNIT WILL NOT SWITCH ON
COMPRESSOR IS RUNNING BUT
REFRIGERATOR IS NOT COOLING
REFRIGERATOR IS NOISY
REFRIGERATOR IS NOT GETTING COLD
ENOUGH
FROST IS FORMING INSIDE THE UNIT
WATER IS LEAKING FROM THE UNIT
WARNING
ALL MAINTENANCE
MUST BE UNDERTAKEN
REFRIGERATION
AUTHORISED SERVICE PARTNER.
NT100818UM Rev 1.1

TROUBLESHOOTING

POSSIBLE CAUSE
UNIT IS NOT CONNECTED
TO MAINS ELECTRICITY
CORRECTLY
MACHINE IS SWITCHED OFF
FUSE BLOWN OR CIRCUIT
BREAKER TRIPPED
POWER CABLE IS DAMAGED
LOOSE CONNECTION OR
FAULTY CONTROLLER
REFRIGERANT LEAK
SET POINT TOO HIGH
BLOCKAGE IN SYSTEM
COMPRESSOR WIRING LOOSE
OR DEFECTIVE
LOOSE CONNECTION OR
FAULTY CONTROLLER
UNIT IS NOT PROPERLY LEVEL
CABINET IS TOUCHING
ANOTHER CABINET OR A WALL
OBJECT IS FOULING
EVAPORATOR FAN
CONDENSER DIRTY
INADEQUATE AIR FLOW
AROUND REFRIGERATOR
CONDENSER FAN NOT
WORKING
EVAPORATOR FAN NOT
WORKING
HIGH AMBIENT TEMPERATURE
HUMIDITY ABOVE 55%
DOOR OPENED TOO OFTEN
DOOR HAS BEEN LEFT OPEN
DOOR GASKET NOT SEALING
CORRECTLY
DEFROST NOT COMPLETING
CORRECTLY
CABINET IS NOT LEVEL
DEFROST WATER DRAIN HOLE
IS BLOCK
AND SERVICE WORK
BY A QUALIFIED
ENGINEER OR
• CHECK POWER IS ON AT THE SOCKET
• CHECK CABLE IS CORRECTLY PLUGGED IN
• PRESS POWER ON/OFF BUTTON (WHERE FITTED)
• CHECK FUSE IN MAIN 13AMP PLUG
• CHECK FUSE OR CIRCUIT BREAKER AT MAIN DISTRIBUTION BOARD
• CHECK FOR DAMAGE ON POWER CABLE, USE A QUALIFIED ENGINEER TO
REPLACE IF NECESSARY
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
• CHECK FOR REFRIGERANT LEAK AND REPAIR, RECHARGE SYSTEM AS PER
THE DATA PLATE
• CHECK SET POINT OF THE CABINET, CHANGE IF NECESSARY
• CLEAR BLOCKAGE, REPLACE FILTER DRIER AND RECHARGE SYSTEM AS PER
THE DATA PLATE
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
• ENSURE UNIT IS INSTALLED ON A LEVEL AND SUITABLE FLOOR
• CHECK CORRECT VENTILATION GAP HAS BEEN ADHERED TO - 200MM AT
THE REAR
• CHECK FOR CORRECT LOADING OF PRODUCT AND ENSURE NOTHING IS
IN CONTACT WITH THE EVAPORATOR FAN OR FAN GUARD
• CLEAN CONDENSER AS NECESSARY
• CHECK CORRECT VENTILATION GAP HAS BEEN ADHERED TO - 200MM AT
THE REAR
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
• WAIT UNTIL AMBIENT TEMPERATURE DROPS BELOW 30°C
• LOWER HUMIDITY OF THE ENVIRONMENT
• KEEP DOOR OPENINGS TO A MINIMUM
• INITIATE MANUAL DEFROST AS LAID OUT IN THIS MANUAL
• CHECK FOR DAMAGE/CRACKS, REPLACE IF NECESSARY
• CHECK CONTROLLER PARAMETERS FOR DEFROST, ADJUST IF NECESSARY
(WHERE AVAILABLE)
• CHECK CABINET WITH SPIRIT LEVEL, ADJUST FEET AS NECESSARY
• CLEAR DRAIN HOLE AT THE REAR OF THE CABINET WITH A PIPE CLEANER
OR SIMILAR IMPLEMENT
AN
6
SUGGESTED SOLUTION
PART V