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SERVICE MANUAL

Model:HRF-660S

22

Issue 201001

Rev.

Ref1001S008V0

Chapter 6 System flow principle

6-1. Refrigeration flow scenograph

The product adopts an air-cooled refrigeration system to ensure accurate refrigeration in freezer

compartment and refrigeration compartment.

ķ

Compressor

ĸ

Condenser

Ĺ

Hot connector pipe for freezer

ĺ

Hot connector pipe for fridge

Ļ

Drier filter

ļ

Capillary tube

Ľ

Evaporator

ľ

Suction pipe

Ŀ

Compressor DC fan motor

ŀ

Freezer DC fan motor

System flow scenograph

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Summary of Contents for HRF-660S

Page 1: ...echnicians only and is not designed for use by the general public It dose not contain warnings and cautions to advice non technical individuals of potential dangers in attempting to service a product Product powered by electricity should by serviced or repaired only by experienced professional technicians Any attempt to service or repair the product or products dealt with in this service informati...

Page 2: ...tive moulding 9 3 3 Adjustable foot 10 4 Disassembly 11 4 1 Doors 11 4 2 Bulb 12 5 Control principle and display system 13 5 1 Control and display panel 13 5 2 Function adjustment and work principle 13 6 System flow principle 22 6 1 Refrigeration flow scenograph 22 7 Circuit diagram 23 7 1 Brief principle diagram 23 7 2 Main control PCB diagram 24 8 Trouble shooting 25 8 1 Normal phenomena 25 8 2 ...

Page 3: ...sue 201001 Rev Ref1001S008V0 8 3 2 No Refrigerating 31 8 3 3 Sudden stops 33 8 3 4 Compressor could not be start 35 8 3 5 Problem with ice making 36 8 3 6 Electric leakage of refrigerator 37 8 3 7 Stronger vibration and loader noise 38 ...

Page 4: ...rm the rated current voltage and capacity before testing with any kinds of instruments 5 Watch if the upper door is open when you check something at a lower position 6 Take out every part in the cabinet before moving the machine especially things like panels e g glass shelf 7 Please wear intact cotton gloves when repair any parts of the evaporator so that scratches by the sharp fins can be avoided...

Page 5: ...event damage to the compressor caused by continuous restart Photo used in this manual The illustration and photos used in this Manual may not base on the final design of products which may differ from your products in some way 1 3 How to read this Service Manual 1 3 1 Using Icons The meaning of each icon is described in the table below Note A note provides information that is not indispensable Cau...

Page 6: ...rosting H manual A automatic Fridge Freezer A Defrost water outlet Yes Air circulating ventilator Yes Kind of coolant R134a R600a R600a Foaming components CP IP 3 Technical data Voltage frequency V Hz 220 240 V 50 Input power mains fuse minimum W A 200 2 2 Length of cable incl plug cm 200 Temperature range from to Fridge Freeze C 10 26 4 Aesthetics Colours see L Silver Top cover Silver Cabinet Sil...

Page 7: ...ontrol lamps green yellow red blue Over temperature ALARM LED acoustic acoustic Adjustable thermostat Yes Fast freeze switch Yes Interior light W 2 Adjustable feet front rear n front Castors front rear front rear 6 Product dimensions Unit dimensions H W D cm 176 8 66 5 77 Depth with open door cm 110 Net weight kg 110 7 Packing dimensions load ability Packing dimensions H W D cm 189 4 96 77 Gross w...

Page 8: ...HRF 660S 8 Issue 201001 Rev Ref1001S008V0 2 2 External views Freezer Light Shelves Bottle rack Freezer drawers Refrigerator compartment Veggie drawer cover Note Shelves Bottle cover Light Bottle rack Veggie drawer Ice tray ...

Page 9: ...aded hole in the door part1 there are two screws per door Next press part3 with its larger opening onto part2 Finally pull part3 down in order to attach it firmly to the door 3 2 Below decorative moulding Open the refrigerator and freezer doors remove the moulding from the refrigerator compartment and then affix it as shown in the illustration Part 1 Part 2 Part 3 ...

Page 10: ...r compartment insert the wrench in the groove of the left screw and turn it in the direction of the arrow until both doors are the same height If the freezer compartment door is lower than that of the refrigerator compartment insert the wrench in the groove of the left screw and turn it in the direction of the arrow until both doors are the same height ...

Page 11: ...ing from the refrigerator 2 Remove the freezer compartment door 1 Unscrew the hinge covers Disconnect all wires except for the grounding wire 2 Remove the screws from the upper hinge following the direction as indicated by Arrow 1 Then remove the upper hinge following the direction as indicated by Arrow 2 3 Lift the freezer compartment door to remove it ...

Page 12: ...ations 220 240V 25W Socket E27 Do not use a replacement bulb of more than 25W Replacing the bulb Install the bulb Unplug the power cord Remove the screws under the cover Lift the cover indirection 1 and then pull it out indirection 2 Twist the bulb anticlockwise and then remove it Install a new bulb of equal specifications Re install the cover ...

Page 13: ... 2 For initial power on if the temperature of refrigerator compartment falls within the range of temperature corresponding to starts and stops of compressor the compressor won t start until the temperature rises to the starting point if the temperature of freezer compartment is higher than the shutdown point the compressor is started 1 3 After the first power on the previous state will be displaye...

Page 14: ...nds the refrigeration function is resumed and its temperature setting display is on When the refrigeration function is suspended the refrigeration load is canceled in correspondence to 2 2 2 Displays 1 Press freeze or cold storage key once to obtain the next higher setting until the highest setting is reached Press again to return to the lowest setting 2 Room Temperature Sensor RT SNR The startup ...

Page 15: ...C F SNR Refrigerator compartment NOTCH 1 5 C NOTCH 1 5 C R1 SNR Name Code Position Freezer sensor F SNR middle of freezer compartment 1efrigerator sensor1 R1 SNR Control box refrigerator air damper assembly Refrigerator sensor2 R2 SNR Right wall of refrigerator compartment RT SNR RT SNR Below freezer hinge box Defrosting sensor D SNR Above freezer evaporator k F D R1 R2 RT Item Compressor ON or ai...

Page 16: ...rced state 2 3 3 Freezer fan control DC fan is adopted for the control of freezer fan DC fan is adopted for the control of freezer fan 1 ON OFF conditions of freezer fan ON OFF 1 Powered on for the first time or after defrosting F SNR is higher than shutdown point 2 F SNR reaches startup point 3 In fast freeze state 4 Refrigerator load in correspondence with condition 2 5 TEST MODE1 PULL DOWN Ǆ 1 ...

Page 17: ...losed as per condition 1 4 Force the air damper to be opened and closed once if it cannot be opened within 1 hour After that decide whether open or close it according to R1 SNR 5 Heating elements of air damper and ice outlet are heated synchronously continuous heating 6 If the temperature still rises or drops within 10 minutes after opening or closing of air damper open or close it again 7 Heating...

Page 18: ... hours whatever the actual temperature is in freezer or refrigerator compartment 2 5 Defrosting 2 5 1 Normal defrosting automatic defrosting 1 The compressor operates 7 hours accumulatively before defrosting is activated when defrosting SNR reaches above 7 C defrosting is ended 2 The compressor stops and air damper is closed during defrosting 3 The compressor operates 4 hours accumulatively upon i...

Page 19: ...n control panel to start forced defrosting 2 With the door closed the heating element is forced open the defrosting will stops after 4 minutes or defrosting SNR reaches 7 C The temperature settings of freezer and refrigerator compartment return to the state before forced defrosting If F SNR is higher than the shutdown point 7 minutes after the compressor and fan are off the compressor will operate...

Page 20: ...t mode If there is fault detected in TEST it can be displayed after the reset of control panel 7 67 QWHU E SUHVVLQJ 7 67 NH RQH WLPH FRROLQJ FDSDFLW 02 203 21 1 KLJK VSHHG 21 1 ORZ VSHHG 21 5 75 2 DLU GDPSHUV DUH RSHQHG LWK 7 67 7 67 PRGH LV PDLQWDLQHG XQWLO PDQXDOO HQGHG 7 67 QWHU E SUHVVLQJ 7 67 NH RQFH PRUH LQ 7 67 02 IRUFHG GHIURVWLQJ 02 203 2 1 2 75 21 DLU GDPSHUV DUH FORVHG 3UHVV H LW NH WR ...

Page 21: ... 3 RT SNR is defective normal F3 RT SNR short circuit or broken circuit 4 R1 SNR is defective normal F1 R1 SNR short circuit or broken circuit 5 R2 SNR is defective normal F2 R2 SNR short circuit or broken circuit 6 D SNR is defective normal F6 D SNR short circuit or broken circuit 7 Freezer fan motor failure normal E1 more than 30 seconds without signal 8 Condenser fan motor failure normal E2 mor...

Page 22: ...pts an air cooled refrigeration system to ensure accurate refrigeration in freezer compartment and refrigeration compartment ķ Compressor ĸ Condenser Ĺ Hot connector pipe for freezer ĺ Hot connector pipe for fridge Ļ Drier filter ļ Capillary tube Ľ Evaporator ľ Suction pipe Ŀ Compressor DC fan motor ŀ Freezer DC fan motor System flow scenograph ...

Page 23: ...23 Issue 201001 Rev Ref1001S008V0 Chapter 7 Circuit diagram 7 1 Brief principle diagram HRF 660S is the forced air cooling refrigerator with two doors side by side The control panel directly controls the start and stop of compressor ...

Page 24: ...SERVICE MANUAL Model HRF 660S 24 Issue 201001 Rev Ref1001S008V0 7 2 Main control PCB diagram ...

Page 25: ...or tubing Because the pressure difference is still greater after the compressor has just stopped running the refrigerant will flow for a certain time therefore this sound is a normal phenomenon 2 A click sound can often be heard from the refrigerator This is a normal sound produced by the pull in or release of the armature of a current deadweight start relay when starting the compressor The compre...

Page 26: ...y locate them and take reasonable remedy measures based on their comprehensive analysis of trouble characteristics as well as operating conditions for various kinds of refrigerators Three Essentials for Checkup 1 Look a Check the tubing of refrigerating system for cracks and various welding points for leaks if leakage occurs an oil stain can be seen definitely b Check the suction and exhaust press...

Page 27: ...10 minutes touch and feel the condenser the temperature of its upper part should be higher than that of its lower part or its right part is hotter than its left part depending on the type of condenser coil this indicates that the refrigerant is circulating If the condenser is not hot this means the leakage of refrigerant In case the condenser radiates heat for only several minutes and then cools d...

Page 28: ...e capillary and no frost or a smaller quantity of loose frost appears on the evaporator After shut down the balance pressure in the system is usually lower than the saturation pressure corresponding to the same ambient temperature Remedy In case there is leakage of refrigerant from the system do not hurry to recharge it with refrigerant manage to find out leak points immediately and make a note of...

Page 29: ...ous increase in temperature in the segment from the compressor outlet to the condenser inlet Because there is air in the system both the gas exhaust pressure and temperature will rise and moreover the gas flowing sound is intermittent and obviously louder Remedy After shut down for several minutes open the tubing evacuate it and then recharge the system with refrigerant 4 Low efficiency of compres...

Page 30: ...e and Trouble Shooting phenomenon and other several trouble are tends to be confused Generally speaking you can make a judgment based on the frost formed on the evaporator If the frost does not cover the evaporator and moreover it is loosely formed you can make a judgment that the deterioration of refrigerating effect is due to the accumulation of refrigerating oil left in the evaporator tubing in...

Page 31: ... lower the gas discharge tube feels rather cold no sound of gas eruption from the liquid in the evaporator can be heard and no will gush out of the process tube if you cut it open after shutdown Remedy Check the whole machine particularly those locations which are liable to leak After leak points have been found repair them or replace them with new parts according to specific circumstances then ev...

Page 32: ...clogged point generally in the capillary or the connection joint of the filter may cause the refrigerant to flow through partially resulting in some corresponding change whereas in that case if you heat it with a hot towel no reaction will happen no flowing sound can be heard moreover there is no periodic change After rejecting the possibility of ice clogging it can be generally considered as the ...

Page 33: ...lay shut off the power to the compressor and stop it In the following we discuss mainly the reasons for causing excessively high gas discharge pressure and low suction pressure 1 Stoppage due to excessively high gas discharge pressure a Too much refrigerant charged into the system Analysis of Trouble The phenomenon such as loose frosting and poor refrigerating effect may occur if excessive refrige...

Page 34: ...his cannot be achieved and the stoppage still occurs repeatedly it is most likely that the mechanical parts or contacts are out of order disassemble the thermostat make a thorough checkup and repair it b Overload of electric motor Analysis of Trouble Probably too many things have been put into the refrigerator and hence the thermal load exceeds its refrigerating capacity or in case the power suppl...

Page 35: ...order the motor will not run and hum sound can be heard from it after the compressor is turned on in that case shut it down immediately otherwise the motor windings will be burned out in case this condition lasts longer c Check the relay contacts and plugs to see if they are perfect and work reliably Poor contact may cause the motor not running or humming 2 Check the circuit voltage to see whether...

Page 36: ... malfunctioning and makes the compressor running continuously Analysis of Trouble When the thermostat doesn t work normally it will make the compressor run continuously and hence very low temperature will be achieved in the refrigerator The fault is generally due to the fact that the contacts of the thermostat cannot be released Remedy Dismantle the thermostat and make a through checkup if it is t...

Page 37: ... has become live due to faults occurred in some electric devices or the erroneous wiring in installing power cord plug or outlet by the user This is very dangerous 3 Electric leakage test a Slight electric leakage A tingle sense will be experienced as soon as you touch the metal parts of the refrigerator with your hand When you test them with a test pencil its neon lamp will come on In that case t...

Page 38: ...trike against the case moreover the wear of compressor parts may cause noise sometimes 3 Resonance of tubing and loosening of parts Improper and compact laying of tubes or the loosening of parts may cause vibration and noise 4 Inspection method To find the sources of noise press the vibration spot with your hand while the refrigerator is in operation and listen attentively whether the vibration be...

Page 39: ...SERVICE MANUAL Model HRF 660S 39 Issue 201001 Rev Ref1001S008V0 Sincere forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com ...

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