PRODIS NT Series - PART V - TROUBLESHOOTING; Troubleshooting Common Issues

6
NT100818UM Rev 1.1
PART V
SYMPTOM POSSIBLE CAUSE SUGGESTED SOLUTION
UNIT WILL NOT SWITCH ON
UNIT IS NOT CONNECTED
TO MAINS ELECTRICITY
CORRECTLY
• CHECK POWER IS ON AT THE SOCKET
• CHECK CABLE IS CORRECTLY PLUGGED IN
MACHINE IS SWITCHED OFF • PRESS POWER ON/OFF BUTTON (WHERE FITTED)
FUSE BLOWN OR CIRCUIT
BREAKER TRIPPED
• CHECK FUSE IN MAIN 13AMP PLUG
• CHECK FUSE OR CIRCUIT BREAKER AT MAIN DISTRIBUTION BOARD
POWER CABLE IS DAMAGED
• CHECK FOR DAMAGE ON POWER CABLE, USE A QUALIFIED ENGINEER TO
REPLACE IF NECESSARY
LOOSE CONNECTION OR
FAULTY CONTROLLER
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
COMPRESSOR IS RUNNING BUT
REFRIGERATOR IS NOT COOLING
REFRIGERANT LEAK
• CHECK FOR REFRIGERANT LEAK AND REPAIR, RECHARGE SYSTEM AS PER
THE DATA PLATE
SET POINT TOO HIGH • CHECK SET POINT OF THE CABINET, CHANGE IF NECESSARY
BLOCKAGE IN SYSTEM
• CLEAR BLOCKAGE, REPLACE FILTER DRIER AND RECHARGE SYSTEM AS PER
THE DATA PLATE
COMPRESSOR WIRING LOOSE
OR DEFECTIVE
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
LOOSE CONNECTION OR
FAULTY CONTROLLER
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
REFRIGERATOR IS NOISY
UNIT IS NOT PROPERLY LEVEL • ENSURE UNIT IS INSTALLED ON A LEVEL AND SUITABLE FLOOR
CABINET IS TOUCHING
ANOTHER CABINET OR A WALL
• CHECK CORRECT VENTILATION GAP HAS BEEN ADHERED TO - 200MM AT
THE REAR
OBJECT IS FOULING
EVAPORATOR FAN
• CHECK FOR CORRECT LOADING OF PRODUCT AND ENSURE NOTHING IS
IN CONTACT WITH THE EVAPORATOR FAN OR FAN GUARD
REFRIGERATOR IS NOT GETTING COLD
ENOUGH
CONDENSER DIRTY • CLEAN CONDENSER AS NECESSARY
INADEQUATE AIR FLOW
AROUND REFRIGERATOR
• CHECK CORRECT VENTILATION GAP HAS BEEN ADHERED TO - 200MM AT
THE REAR
CONDENSER FAN NOT
WORKING
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
EVAPORATOR FAN NOT
WORKING
• CHECK FOR LOOSE CONNECTION, REPLACE IF NECESSARY
HIGH AMBIENT TEMPERATURE • WAIT UNTIL AMBIENT TEMPERATURE DROPS BELOW 30°C
FROST IS FORMING INSIDE THE UNIT
HUMIDITY ABOVE 55% • LOWER HUMIDITY OF THE ENVIRONMENT
DOOR OPENED TOO OFTEN • KEEP DOOR OPENINGS TO A MINIMUM
DOOR HAS BEEN LEFT OPEN • INITIATE MANUAL DEFROST AS LAID OUT IN THIS MANUAL
DOOR GASKET NOT SEALING
CORRECTLY
• CHECK FOR DAMAGE/CRACKS, REPLACE IF NECESSARY
DEFROST NOT COMPLETING
CORRECTLY
• CHECK CONTROLLER PARAMETERS FOR DEFROST, ADJUST IF NECESSARY
(WHERE AVAILABLE)
WATER IS LEAKING FROM THE UNIT
CABINET IS NOT LEVEL • CHECK CABINET WITH SPIRIT LEVEL, ADJUST FEET AS NECESSARY
DEFROST WATER DRAIN HOLE
IS BLOCK
• CLEAR DRAIN HOLE AT THE REAR OF THE CABINET WITH A PIPE CLEANER
OR SIMILAR IMPLEMENT
TROUBLESHOOTING
WARNING
ALL MAINTENANCE AND SERVICE WORK
MUST BE UNDERTAKEN BY A QUALIFIED
REFRIGERATION ENGINEER OR AN
AUTHORISED SERVICE PARTNER.