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38

6.4 Fan motor

Rated voltage:6-15V

Rated input power:2.5W

6.4.1 Basic parameters

6.4.2 Checking method

6.Circuit and checking

1.Check the connecting wiring of fan motor is well or not,repair if it is
broken.The fan motor corresponding pin No.7~15 on CN7 connector
of mainboard,as the drawing below.

2.Pin No.8,No.11 and N0.14 connect 12V power and pin No.15
connect GND,if the fan motor works normally,change the mainboard;
If not,change the fan motor.

Summary of Contents for HRF3603F

Page 1: ...Model HRF3603F Refrigerator Service Manual ...

Page 2: ... 5 Dew in refrigerator compartment 6 Circuit and checking 6 1 Circuit diagram 6 4 Fan motor 7 Cooling system repairing 7 2 Summary of repair 7 3 Regulation of repair 7 4 Practical work of repair 2 3 Evaporator structure 4 1 Display controls 4 2 Defrost mode 4 3 Compulsory defrost mode 6 5 Damper 6 6 Light 6 7 Door switch 6 8 Temperature fuse 4 4 Error display 5 6 Low temperature of vegetable vase ...

Page 3: ...ectrical 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 was confirmed 10 Do...

Page 4: ...re 2 Appearance and structure Note Due to unceasing modification of our products your refrigerator may be slightly differant from this Services Manual but its functions and using methods remain the same 2 1 View of the appliance ...

Page 5: ...ind channel structure 4 2 Appearance and structure Refrigerator compartment Freezer compartment Variable temperature compartment Freezer fan Refrigerator fan Damper Refrigerator evaporator Freezer evaporator ...

Page 6: ...2 2 Wind channel structure 5 2 Appearance and structure 冷 冻 室 风 道 循 环 Refrigerator compartment Freezer compartment ...

Page 7: ...2 3 Evaporator structure 6 2 Appearance and structure Fuse Sensor Heater Evaporator ...

Page 8: ...7 2 4 Compressor room structure 2 Appearance and structure Ground wire Compressor Dry filter Bottom fan Evaporation dish Bottom condenser ...

Page 9: ...t capacity freezer compartment L 107 Energy efficiency class A Climate class SN 10 32 C N 16 32 C ST 16 38 C T 16 43 C SN N ST S Refigerator room temperature C 2 8 Freezer room temperature C 24 14 Freezer compartment star rating 4 Star Energy consumption 24 hours kWh 24h 1 301 Freezing capacity 24 hours kg 24 h 10 Max noise level dB A 43 Kind of coolant Charge R134a R600a grammes R g R600a 68 3 Ba...

Page 10: ...9 4 Operation and functions 4 1 Display controls 4 Operation and functions ...

Page 11: ...10 4 Operation and functions 4 1 Display controls ...

Page 12: ...11 4 Operation and functions 4 1 Display controls ...

Page 13: ...perature it will enter defrost mode automatically 4 2 2 Defrost flow Compressor stops Evaporator fan stops Damper stops Defrost heater and damper heater work Evaporator temperature reach the setting point exit defrost mode Compressor starts several minutes delay Evaporator fan starts several minutes delay Damper starts Start Defrost heater and damper heater stop ...

Page 14: ...until evaporator temperature reach the setting point Defrost heater and damper heater stop Compressor starts several minutes delay Evaporator fan starts several minutes delay Damper starts Start 4 3 2 Compulsory defrost flow Keep the refrigerator door closed press the Fridge button and My Fresh Choice button for more than 3 seconds in 10 minutes after power on then it will enter compulsory defrost...

Page 15: ...14 4 4 Error display 4 Operation and functions 4 4 1 Error code ...

Page 16: ... functions 4 4 2 Checking method Start Change the mainboard Is the sensor connecting wiring broken Repair the wiring Is the sensor OK Change the sensor Is the sensor connector plug well Plug the terminal well 4 4 2 1 Humidity sensor error ...

Page 17: ...sponding pin No 13 No 6 and No 4 on CN5 connector of mainboard 2 Use a multimeter to check the voltage of pin No 4 and No 6 is 5V or not and the voltage of pin No 13 is 1 2 3 5V or not the value will change along with the change of environment temperature and humidity If the result is abnormal it means the humidity sensor is broken ...

Page 18: ... 4 4 2 Checking method 4 4 2 2 Other sensor error Start Change the mainboard Is the sensor connecting wiring open circuit or short circuit Repair the wiring Is the sensor OK Change the sensor Is the sensor connector plug well Plug the terminal well ...

Page 19: ...he freezer sensor corresponding pin No 9 and No 5 on CN5 connector of mainboard 4 The defrost sensor corresponding pin No 10 and No 6 on CN5 connector of mainboard 5 The environment sensor corresponding pin No 7 and No 5 on CN5 connector of mainboard 6 The my fresh choice temperature sensor corresponding pin No 11 and No 5 on CN5 connector of mainboard 7 Use a multimeter to measure the resistance ...

Page 20: ...Start Change the mainboard Is the connecting wiring between display panel and mainboard broken Repair the wiring Is the display panel OK Change the display panel 4 4 2 3 Communication error Note Communication sensor corresponding pin No 1 4 on CN5 connector of mainboard ...

Page 21: ...20 5 Troubleshooting 5 1 Common problem and checking ...

Page 22: ...21 5 Troubleshooting ...

Page 23: ...to the power outlet Are mainboard terminals plugged well Is the compressor OK Plug the power cord well Change the mainboard Change the compressor Start 5 Troubleshooting Is mainboard output power OK Plug the terminals well Check connectors and sensors ...

Page 24: ...sket Reassemble the door Is the door hanged down Is food palced too close to the sensor or cold air spout Explain not to place food too close to sensor or cold air spout Start Refer to 4 4 Error dispaly chapter Does compressor work Check lead wire 5 3 1 Freezer compartment Is the compressor OK Change the compressor Is the PTC starter or overload protector OK Check the mainboard Change the PTC star...

Page 25: ... evaporator Do doors open frequently Explain not to open doors frequently Counsel to use colder temperature setting 24 5 Troubleshooting Change the defrost heater Check ice formation on Eva And if refrigerant leak is found repair it 5 3 Refrigeration failure 5 3 1 Freezer compartment ...

Page 26: ...the door gasket Is the door hanged down Reassemble the door Explain not to place food too close to sensor or cold air spout Explain not to open doors too frequently Is food palced too close to sensor or cold air spout Do doors open frequently Use colder temperature setting Start Solve error code problems Check the wiring Gap between refrigerator door and cabinet Gap between gasket and door 5 3 Ref...

Page 27: ...to heat sources Is watery or hot food stored in the cabinet Wipe out dew on the louver surface and run the refrigerator again 26 5 Troubleshooting 5 4 Thick frost in freezer compartment Start Reassemble the door Explain not to open doors too frequently Make enough distance between heat sources and appliance Gap between gasket and cabinet ...

Page 28: ...Does the door open too frequently Is the appliance too close to heat sources Is watery or hot food stored in the cabinet Advise to cool down hot food and seal watery food well before storing Make enough distance between the appliance and heat sources Explain not to open doors too frequently Start Gap between gasket and cabinet Reassemble the door ...

Page 29: ...se Is the damper OK Change the damper Is the sensor OK Change the sensor Check the sensor connection and repair Counsel to use warmer temperature setting Start Is refrigerator temperature setting too cold Is the mainboard output power OK Check the mainboard ...

Page 30: ...29 5 Troubleshooting Is the light disconnected or broken Is the door switch OK Change the door switch Check the door switch connection and repair 5 7 Breaking of light Start Change the light ...

Page 31: ...Is the appliance leveled Level the appliance by adjusting the bottom feet Are the adjustable bottom feet broken Change the adjustable bottom feet Is the noise from compressor itself Add a rubber absorber to reduce the vibration Start Change the compressor ...

Page 32: ...en comp starts stops Sound from freezer compartment when compressor s running Fasten the evaporator Start Water flowing or hiss sound from the appliance Attache a gum absorber on the capillary tube Attach a gum absorber on the accumulator Explain to customer that it is normal sound of the running appliance ...

Page 33: ... fan itself or vibration when working Change the fan motor Is the fan damaged or transformed Is the fan touching surround Set the fan right avoid to touch surround Start Is the fan moving or shaking Change the fan Explain to the customer that it is normal sound of the running appliance ...

Page 34: ...self shaking strongly Are pipes touching in the compressor room Separate the touching pipes Attach a gum absorber on top of the compressor Start Move or change the points of vibration absorber on pipes to reduce shaking Explain to the customer that it is normal sound of the running compressor Set the pipe right to avoid touching the evaporation dish ...

Page 35: ...34 6 Circuit and checking 6 Circuit and checking 6 1 Circuit diagram 6 1 1 Appliance with ion generator 6 1 2 Appliance without ion generator ...

Page 36: ...ing method 6 2 2 Removing the mainboard 1 Unplug the appliance 2 Remove the screws of electric box cover by screwdriver as picture 1 3 Remove the electric box cover as picture 2 4 Unplug the terminals on the mainboard as picture 3 5 Pry up the mainboard by fingers and take it out as picture 4 Picture1 Picture2 Picture3 Picture4 ...

Page 37: ...x cover and check 2 Check the connecting wiring between compressor and mainboard and repair if it is broken 3 Use a multimeter to measure the voltage between lable N and lable COMP on CN2 connector of mainboard and measure frequency between pin No 10 and N0 11 on CN6 connector If the voltage is equal to electric supply power and there is stable output frequency it means the compressor is broken ch...

Page 38: ...cking 1 Unplug the appliance 2 Remove the screws of protector box by screwdriver as picture 1 3 Pry up the protector box from top by screwdriver as picture 2 4 Unplug the overload protector as picture 3 5 Unplug the PTC starter as picture 4 Picture1 Picture2 Picture3 Picture4 ...

Page 39: ...ng 1 Check the connecting wiring of fan motor is well or not repair if it is broken The fan motor corresponding pin No 7 15 on CN7 connector of mainboard as the drawing below 2 Pin No 8 No 11 and N0 14 connect 12V power and pin No 15 connect GND if the fan motor works normally change the mainboard If not change the fan motor ...

Page 40: ...ard beam and remove it as picture 2 4 Remove the front clapboard part as picture 3 5 Pry up the back clapboard part at the buckles by screwdriver and then remove it as picture 4 6 Take out the freezer wind channel component as picture 5 7 Unplug the terminals of the wind channel component as picture 6 8 Separate the wind channel cover and foam as picture 7 9 Remove the screws of the fan by screwdr...

Page 41: ...d checking 1 Check the connecting wiring of damper is well or not repair if it is broken The damper corresponding pin No 1 6 on CN7 connector of mainboard as the drawing below 2 The damper will turn on and off for one time after power on if not change the mainboard first and change the damper if problem remains ...

Page 42: ... 5 3 Removing the damper 6 Circuit and checking Picture 1 Picture 2 1 After removing the freezer wind channel component seperate the wind channel cover and foam as picture 1 2 Remove the damper as picture 2 ...

Page 43: ...5 and No 9 freezer light corresponding pin No 6 and No 9 variable temperature light corresponding pin No 7 and No 9 as the drawing below 2 Check output voltage corresponding light of the mainboard if it is 12V it means the mainboard is OK change the light If not it means the mainboard is broken change it 6 6 2 Checking method 6 Circuit and checking Rated voltage DC12V Rated power Light Rated power...

Page 44: ...ance 2 Pry up the light cover from the buckles by screwdriver as picture 1 3 Remove the light cover as picture 2 4 Pry up the light from the buckles by screwdriver as picture 3 5 Take out the light and unplug the terminal as picture 4 Picture1 Picture2 Picture3 Picture4 ...

Page 45: ...of mainboard freezer door switch corresponding pin No 1 and No 3 and variable temperature door switch corresponding pin No 1 and No 4 as the drawing below 2 Check the magnet on the door is dropped out or not 3 Normally when the door is closed the two pins of door switch should be short circuit When the door is open the two pins should be open circuit If the result is abnormal change the door switc...

Page 46: ...perature 72 Load voltage AC250V Load current 10A 6 8 1 Basic parameters 6 8 2 Checking method 6 Circuit and checking Use a multimeter to measure resistance between the two terminals of the temperature fuse if it is open circuit change the fuse ...

Page 47: ...46 6 8 3 Removing the temperature fuse 6 Circuit and checking 1 After removing the freezer wind channel component unplug the terminal of the fuse as picture 1 2 Separate the fuse wire and then remove the fuse as picture 2 ...

Page 48: ...multimeter to measure voltage between label N and label DEF HT on CN2 connector of the mainboard if the voltage doesn t equal to electric supply power it means the heater is broken change it 2 Check the fuse is well or not refer to 6 8 Temperature fuse chapter 3 Use a multimeter to measure resistance of the heater if the value isn t 212Ω 5 it is broken change the heater ...

Page 49: ...oving the defrost heater 6 Circuit and checking 1 After removing the freezer wind channel component unplug the terminal of the heater as picture 1 2 Pry up the buckles that fastening the heater and then remove the heater as picture 2 ...

Page 50: ...ic valve and power on it the voltage is 187 220V then to fell if the electromagnetic valve has reversing action or hear if the electromagnetic valve has the sound of reversing action If yes meaning the electromagnetic valve is good Fault phenomenon 3 Reversing not reliable Detection method After power on the electromagnetic valve With the hand to touch the electromagnetic valve when fell the elect...

Page 51: ...l seal uses rubber material so when welding the electromagnetic valve the time should be not more than 5S Long time to weld will lead to high temperature and will be transfer to electromagnetic valve internal rubber causes the change of rubber and may lead to electromagnetic valve abnormal work when welding winding some wet cloth on pipe and drench it at the same time ...

Page 52: ...s back to compressor through air return pipe and becomes high temperature high pressure liquid after compressing Refrigerant enters anti condensation pipe and condenser one after another then becomes middle temperature high oressure liquid after condensation Refrigerant enters capillary through magnetic valve and pressure will be reduced Refrigerant enters evaporator and become low temperature low...

Page 53: ...eration system repair 7 1 Refrigeration system Dry filter Condenser Compressor Bottom condenser Anti condensation pipe Capillary Capillary Freezer evaporator Air return pipe Refrigerator evaporator Magnetic valve ...

Page 54: ...53 7 Refrigeration system repair 7 2 Summary of repair ...

Page 55: ...54 7 3 Regualation for repair 7 Refrigeration system repair ...

Page 56: ...55 7 4 Practical work for repair 7 Refrigeration system repair ...

Page 57: ...56 7 4 Practical work for repair 7 Refrigeration system repair ...

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