Haier RF-8888-279 Service Manual Download Page 13 | Manualshive

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Circuit Diagram

1 Schematic Circuit Diagram

2 Brief Description of Control Principle
HSP03WNAWW is a direct cooling single-system refrigerator; a mechanical type of control is

generally adopted. The thermostat directly controls the start and stop of compressor, and
hence the refrigerator temperature.

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Summary of Contents for RF-8888-279

Page 1: ...1 HAIER REFRIGERATOR Service Manual PART RF 8888 279 HAIER AMERICA TRADING LLC www haieramerica com ...

Page 2: ...roduct Code Explanation And Series Introduction 4 Specifications 5 Safety Precaution 6 Parts And Functions 10 Function Schedule 11 System Flow Chart 12 Circuit Diagram 13 Maintenance Service And Troubleshooting 14 Troubleshooting And Repairs 16 ...

Page 3: ...3 Features Flat Back Design Freezer Compartment With Ice Cube Tray ...

Page 4: ...4 Product code Explanation and Series Introduction ...

Page 5: ...ly V Hz 115V 60Hz Rated Input Power W 161 Power Consumption kW h year 307 Net Weight lbs 61 7 Gross Weight lbs 70 5 Unit Dimension WXDXH inches 19 23 32 X19 23 32 X26 5 16 Packing Dimension DXHXW inches 20 1 4 X23 1 2 X27 Container Quantity 40 331 Container Quantity 40 HC 331 ...

Page 6: ...grounding outlet Power cable is filed with three core grounding plugs complying with three core grounding outlet In no case should the third plug pin grounding of the power cable be removed WARNING Do not damage power cable Be sure not to unplug unit by power cable Hold plug firmly to unplug Do not let the body of the unit have contact or press power cable Take care of power cables to avoid damage...

Page 7: ...ations 1 Unplug unit prior to cleaning or repairing 2 Unplug unit before replacing damaged lamp to prevent electrical shock WARNING It is not advisable or prohibited to keep hazardous inflammable or explosive items like acid or alkali into refrigerators WARNING Do not keep medicine vaccines or chemical reagents in refrigerator This refrigerator is for household use and cannot store items with stri...

Page 8: ...ectric appliance except the one the manufacturer has stated inside the refrigerator WARNING Do not play with the door to avoid damage WARNING Do not keep heavy objects on Refrigerator WARNING Do not touch refrigerator with your wet hands when it is in operation to avoid your hand form getting stuck to the freezer WARNING Do not spray water onto the unit or install Unit at a wet place to avoid inte...

Page 9: ...ator gets damaged WARNING Do not keep bottled items in the freezer compartment to avoid frost crack WARNING Unplug power supply when carrying out cleaning Switch power on 5 minutes after to prevent any damage WARNING Dismantle door and door gasket before disposing off a refrigerator to avoid damage to unsuspecting persons or children ...

Page 10: ...10 Parts and Functions ...

Page 11: ...11 Function Schedule Flat Back Design Freezer Compartment With Ice Cube Tray ...

Page 12: ... of System Flow Chart 2 Brief Description of System Flow Chart HSP03WNAWW is a direct cooling single system refrigerator which has a freezer compartment When the refrigerator is just powered on the refrigerant flows in the sequence 1 2 3 4 5 ...

Page 13: ...Brief Description of Control Principle HSP03WNAWW is a direct cooling single system refrigerator a mechanical type of control is generally adopted The thermostat directly controls the start and stop of compressor and hence the refrigerator temperature ...

Page 14: ...14 Maintenance Service and Troubleshooting 1 When the refrigerator does not get cold at all ...

Page 15: ...15 2 The refrigerator is not sufficiently cold ...

Page 16: ...ature of a current dead weight start relay when the compressor is started The compressor motor makes a clicking sound while it is running This sound is faint in the daytime but becomes louder at night Hot Refrigerator Parts The compressor consists of an electric motor and a compressing apparatus During its normal operation the temperature of the motor s starter core and windings will range between...

Page 17: ... stain will be seen Check the suction and the exhaust pressure valves high pressure and low pressure of compressor to see whether they are normal Check the conditions of the frost attached to its evaporator and gas return tube It is abnormal if frost has formed on part of the evaporator or there is no frost attached to it Pay attention to the rate at which the temperature decreases in both the ref...

Page 18: ... If the condenser is hot for only a few minutes and then cools down the filter and capillary are clogged If hot air is blown out of the forced air cooling condenser the system is out of order Feel the filter s temperature Normally the temperature on the filter s surface should be a little higher than the ambient temperature If the filter is lower than the ambient temperature then the meshes of its...

Page 19: ...pressor rises frost forms on the evaporator and gas return tube and the refrigerator temperature drops slowly If excessive refrigerant has been charged the liquid refrigerant that cannot evaporate in the evaporator will return to the compressor This will cause liquid striking The liquid refrigerant evaporates and effervesces as soon as it flows into the refrigerating oil at the bottom of compresso...

Page 20: ... to let air inside or use a fan to speed up air moving into the refrigerator to quicken the defrosting process Never strike the frost layer with any iron tools or wooden stick in order not to damage the evaporator tubing 6 Refrigerating oil in evaporator tubing Analysis of Trouble During the refrigerating cycles small amounts of refrigerating oil may remain in the evaporator tubing However if ther...

Page 21: ... liable to leak After leak points have been found repair them or replace them with new parts according to specific circumstances Then evacuate the system and finally charge refrigerant 2 Refrigerating system is clogged with ice Analysis of Trouble This is typically a result of a poor dryness treatment improper air purging or substandard water content The symptoms of this condition are Irregular re...

Page 22: ...refrigerant If the valve block is broken the refrigerant cannot be discharged This prevents refrigeration Remedy It is quite difficult to differentiate this trouble from others because they have similar symptoms When repairing listen attentively for abnormal sounds coming from the compressor Oftentimes broken pieces of valve block strike against the cylinder Check to see if the compressor casing i...

Page 23: ...Leak points appear in low temperature parts or assemblies This is because the evaporation temperature is lower for such low temperature devices especially at the low pressure end it is easier for the air to go into the system Once it has been ascertained that air does exist in the system you have to open the tubing re evacuate it and then charge it with refrigerant Stoppage due to electrical troub...

Page 24: ... contact of switch and blown fuse Make a comprehensive analysis of these phenomena find out its real cause and take corrective measures to resolve the problem Remedy Check the input power circuit to see whether there is voltage in the power supply note the circuit that is connected to the knife switch This can be determined with a voltmeter or a test pencil If a blown fuse is found ascertain and r...

Page 25: ... are damaged or there is a short circuited between turns Analysis of Trouble When motor windings are damaged or there the occurrence of a short circuit between turns the fuse will be blown repeatedly and the blowout particularly occurs at that instance where you close the knife switch Remedy Check the terminals and the outer casing to see whether they are short circuited and measure the resistance...

Page 26: ...un without end If the food placed in the refrigerator is not too much there may be the following two situations I Control system is probably out of order ii The control system works normally but there are problems in the refrigerating system or other parts a Temperature is set improperly The temperature control knob is set to the coldest position This position is to be used for fast freezing or co...

Page 27: ...e temperature in the refrigerator will rise and makes the compressor run continuously Remedy Check the heat insulation layer for damaged parts Repair it if damaged to improve its heat insulation property If the door has deformed or the door seal is not tightly sealed against the case body repair them e Too much food is placed in the refrigerator or is placed too densely resulting in poor ventilati...

Page 28: ...vibration and noise during its operation b Leveling screws not properly adjusted If the leveling screws on refrigerator legs have not been adjusted properly vibration and noise will still occur even if the refrigerator has been placed on a level ground 2 Abnormal noise from compressor Three suspended spring inside the compressor case are out of balance and strike against the case moreover the wear...

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