Hisense RD-31WC4S series, Service Manual

Page 1: ...Refrigerator Service manual NO FROST MODEL RD 31WC4S BCD 228W NOTE product specifications are subject to change ...

Page 2: ...The instruction of replacing refrigerator Light bulb 12 The instruction of replacing the timer 13 The instruction of of replacing fan motor 13 The instruction of replacing evaporator temperature temperature fuse and heater 15 The instruction of replacing Door switch 15 The instruction of replacing PTC Starting relay and Overload protector 16 Water Dispenser 17 Troubleshooting 19 The common problem...

Page 3: ...6 Use standard electrical components when replacing them 7 Make sure the hook is correctly engaged Remove dust and foreign materials from the housing and connecting parts 8 Do not fray damage machine heavily bend pull out or twist the power cord 9 Please check the evidence of moisture intrusion in the electrical components Replace the parts or mask it with insulation tapes if moisture intrusion wa...

Page 4: ...Parts Description Circuit diagrams and Basic parameters ...

Page 5: ...year 266 Energy consumption ISIRI 4853 2 per 24 h kWh 24 h 0 728 Freezing capacity 24 hours kg 24 h 4 Compressor W 220V 73 3W 115 PTC starter V Ω 220V 15 20 Ω Overload protector Turn off Turn on C 120 5 C 61 9 C Heater V W Ω 220V 150W 10 322Ω 10 Timer V W h 220V 0 5W 10min 12h Light bulb V W 220V 15W fan motor V W 220V 2W Max noise level dB A 42 Kind of coolant Charge R134a R600a grammes R g R600a...

Page 6: ...Cooling diagram Checking the Thermostat Use a multi meter to test the resistance between L C when the thermostat is at normal position ...

Page 7: ...shows anything have response then the thermostat is always at ON Position and the compressor will keep on working and will not stop ever Put the sensor pipe of the thermostat in the freezer compartment like the below pic shows Put the thermostat at Max 7 position and let it keep this position for 20 minutes Turn the knob from 7 to 1 slowly If you can feel a stop signal like kind of noise of da the...

Page 8: ...t means the inner coil has some problem and the compressor can not work properly Compressor Protector test Use a multi meter to test the resistance between the two end as the pic show If there show 000 or almost 0 then it is OK If there is no response then it is broken Compressor PTC starter test Use a multi meter to test the resistance between the two end as the pic show If there show the number ...

Page 9: ...ell as wires Measuring temperature fuse and heater resistance about 361Ω then it is OK Blue and Yellow Checking the timer Timer is an importance control component for air defrost refrigerator s defrost system The common problems as following bad cooling evaporator don t defrost or defrost incomplete It s working principle as following picture ...

Page 10: ... value of resistance is 0000 it means normal Because there is capacitance resistance in the timer s internal circuit so when you use the multimeter to measure the coil running port it will can t measure the value If you want to measure the coil running is normal or not you can power on 220V to foot 1 and 3 of timer then put the timer near to your ear if you can hear the running sound it means norm...

Page 11: ...ng defrost so that it can protect the parts The common problems are evaporator defrost incomplete Checking method as following Picture 1 Picture 2 As picture 1 it is the defrost fuse As picture 2 using the multimeter measure two foots of fuse if the value of resistance is 0000 it means normal Checking the defrost thermostat The thermostat is a low temperature protector of defrost system when it fe...

Page 12: ...you can put the defrost temperature sensor into a refrigerator s freezer The temperature is below 18 after 10 20 mins measuring two foots of defrost temperature sensor if the value of resistance is 0000 it means normal The guide for Disassembly Common parts of Refrigerator The instruction of replacing the thermostat 1 Use a screwdriver to remove the thermostat box screws 2 Take out the thermostat ...

Page 13: ...4 Remove the thermostat fixing nut 5 Take out the thermostat The instruction of replacing refrigerator Light bulb Light bulb data 220 240V max 15W Unplug the mains plug ...

Page 14: ...e the defective light bulb 4 Refit the light bulb cover and the screw 5 Put the refrigerator back into operation The instruction of replacing the timer 1 The location of the time 2 Remove the screws ofTimer cover 3 Take out timer and unplug the connecting wire The instruction of of replacing fan motor ...

Page 15: ...1 Remove the air duct cover plate screw 2 Remove the screw cover 3 Unscrew two screws of the wind channel part in freezer chamber 4 Removing wires 5 Remove the wind channel part in freezer chamber ...

Page 16: ...placing evaporator temperature temperature fuse and heater 1 Take out the evaporator temperature fuse 2 Take out the defrost temperature sensor 3 Take out the replacing heater The instruction of replacing Door switch 1 Use a screwdriver to pry snap ...

Page 17: ...uction of replacing PTC Starting relay and Overload protector 1 The location of the PTC Starting relay and Overload protector 2 Take down Spring Tap and Cover 3 Disconnect the connecting wire of the PTC Starting relay and Overload protector ...

Page 18: ...Water Dispenser ...

Page 19: ......

Page 20: ... Is the setting of the temperature appropriate 3 4 Is there too much food or overheating food in it 3 5 Does there open the door frequently 3 6 Is the door completely closed 3 7 Does the gasket destroyed or distort 3 8 Is the thermostat good operation 3 9 Does the gas leak Ice up in the freezing chamber 4 1 Is the setting of the temperature appropriate 4 2 Is there multi moisture food and too clos...

Page 21: ...and feels very hot C much noise sounds like ZZZZZ comes from outlet of capillary d the temperature fell down very slowly First find out the point of leaking on tube and then sealed it vacuuming it finally recharge with Gas Note If you find oil on somewhere it is possible that leakage point is there 2 The quantity ofGas is too much If too muchGas was charged into the cycle system the extra gas will...

Page 22: ...eason analysis Solutions 1 Leakage of gas Phenomenon of failure a leaking fast b leaking slowly c no voice of liquid flowing d cut off charging tube no gas goes out First find out the point of leaking on tube and then sealed it vacuuming it finally recharge with gas Note If you find oil on somewhere it is possible that leakage point is there 2 There is some thing that blocked the liquid cycle syst...

Page 23: ...ocking there is no change It must be offal blocking First stop unit for several minutes and then open charging tube discharge all of gas Blow the cycle system with gas of nitrogen Change a new capillary and filter and then recharge Gas finally sealed the system COMPRESSOR NEVER STOPS Reason Solutions 1 The setting temperature is not reasonable Readjust the temperature setting 2 the sensor is bad R...