Related Manuals for Haier RF-8888-46
Summary of Contents for Haier RF-8888-46
- Page 1 HAIER REFRIGERATOR SERVICE MANUAL PART # RF-8888-46 HAIER AMERICA TRADING, LLC www.haieramerica.com...
- Page 2 TABLE OF CONTENT Content Product Code Explanation And Series Introduction Specification Safety Precaution Parts And Functions System Flow Chart Circuit Diagram Maintenance Service And Troubleshooting...
- Page 3 PRODUCT CODE EXPLANATION AND SERIES INTRODUCTION...
- Page 4 SPECIFICATION...
- Page 5 SAFETY PRECAUTIONS WARNING! WARNING! This appliances uses 115V~/60Hz AC for It is advisable to use a separate, dedicated power supply. and secured grounding outlet. Voltage has excessive variations, which can cause the Power cable is filed with three core appliance not to start or cause malfunctions like (grounding) plugs complying with three core abnormal noise by processor.
- Page 6 WARNING! WARNING In the case of the leakage of an Unplug power in these situations inflammable gas 1. Unplug unit prior to cleaning or repairing. 1. Access leaking area. 2. Unplug unit before replacing damaged 2. Open door and windows. Lamp to prevent electrical shock.
- Page 7 Do not place any electrical plugs, regulators or Do not store or use gasoline or other microwaves on top of the refrigerator. Do not use any flammable substances in the vicinity of the other electric appliance (except the one the refrigerator to avoid fire outbreak.
- Page 8 WARNING! Do not temper with refrigerator when you do not WARNING! have any technical know how. Seek professional Do not keep bottled items in the freezer advice in case of the refrigerator gets damaged. Compartment to avoid frost crack. WARNING! WARNING! Unplug power supply when carrying out cleaning.
- Page 9 Parts and Functions 3-1. Description of Components 1. Ice-making ware 7. Humidity adjusting slide 2. Ice-storage box 8. Door rack 3. Wire shelf 9. Egg tray 4. Refrigerator lamp 10. Bottle rack 5. Snack ware 11. Tall bottle rack 6. Cantilever shelf 12. Humidity maintaining box FUNCTION SCHEDULE ●...
- Page 10 SYSTEM FLOW CHART 1. SCHEMATIC DIAGRAM OF SYSTEM FLOW CHART...
- Page 11 2. FLOW OF COLD AIR...
- Page 12 Circuit Diagram 1. Schematic Circuit Diagram Brief Description of Control Principle HTE18 is the forced air-cooling refrigerator with two doors. A mechanical type of all the control is generally adopted. The thermostat directly controls the start and stop of compressor, and hence the refrigerator temperature.
- Page 13 MAINTAINANCE SERVICE AND TROUBLESHOOTING 1. Refrigerator does not chill CHECK POINT INDICATION CAUSE OF PROBLEM DIAGNOSIS Does refrigerator room illuminate Check power source and when refrigerator power cord door is closed? Is power Check for continuity supplied to Does Freezer compressor compressor Thermostat...
- Page 14 MAINTENANCE SERVICE AND TROUBLESHOOTING NO DEFROSTING Operate? Freezer And Refrigerated Rooms Are Not Sufficiently Cold Check Point Indication Cause of Trouble Does the processor operate? Is refrigerator installation distant from direct heat? Is the condenser radiating efficiently? Is there any hot foodstuff in refrigerator? Excessive foodstuff stored or interference with cold air circulation Is temperature control knob in suitable position?
- Page 15 Check for continuity Does the fan for Faulty door between terminal 3 and 4 circulating cold switch and by pressing the door air operate? switch (F, R) lever Pressing of the door Does the fan motor rotate switch on the door when pressing the door with panel is in faulty switch? Lever?
- Page 16 TROUBLESHOOTING AND REPAIRS 1. NORMAL REFRIGERATOR FUNCTIONS A domestic refrigerator is comprised of an electric control system and a refrigerating system. Since both systems work together, it is difficult to tell whether the refrigerating system is in good working condition. If any part of the refrigerating system or electric control does not work properly, the refrigerator’s efficiency will decline, operating properties will destabilize, and in worst cases, it will not function at all.
- Page 17 2. COMMON PROBLEMS OF A REFRIGERATOR AND THEIR SOLUTIONS Refrigerator problems are closely related to the quality of components, level of workmanship, and owner maintenance. The parameters generally used to determine the working conditions of a refrigerator include the temperature inside the refrigerator, the operating rate, electrical power consumption, noise level, and other functional indices.
- Page 18 Listen a) Listen to the noises made while the compressor is running. During the normal operation of compressor, a slight and uniform humming sound due to undulation of electric currents will be heard. The sounds listed below indicate a malfunction. i.
- Page 19 should be no frost or condensation on the gas suction tube. However, frost and condensation may appear for a very short time period when immediately after starting the machine. Do not use only one of the indicators from the checklist above to decipher the state of your refrigerating system.
- Page 20 bottom of compressor. If the condition is severe, foams will cover the inside the compressor housing and be sucked by the piston, causing damage to the components of compressor. Remedy According to the operating procedures, it is mandatory to turn the machine off. After several minutes, open the refrigerant charging tube and let the refrigerant escape from it, replace the dry filter, refill the refrigerant after evacuating, and then seal the charging port.
- Page 21 Remedy Turn the refrigerator off and prepare for defrosting. Open the refrigerator’s door 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.
- Page 22 1) The entire refrigerant has leaked Analysis of Trouble Leak points in the refrigerating system have not been found and repaired timely, allowing refrigerant to leak completely. There are two kinds of leaks: slow leaks and fast leaks. Symptoms of total leakage of refrigerant are: i.
- Page 23 Remedy If there is too much moisture in the refrigerating system, release the refrigerant, purge the tubing with nitrogen, and then refill the system with the filtered refrigerant. Another method is to connect a filter with moisture absorbers, such as silica gel or anhydrous calcium chloride, to the refrigerating system.
- Page 24 with pressure gauges. If the gas suction valve block is broken, the suction pressure gauge pointer will swing violently and the suction pressure will be very high. Whereas when the gas discharge valve block is broken, the discharge pressure gauge pointer will swing drastically and the discharge pressure will be very high.
- Page 25 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 troubles Thermostat is out of control due to electric troubles Analysis of Trouble In case the thermostat does not work in its good order or its temperature sensor has not been installed...
- Page 26 Thermostat generally controls start and stop of the compressor. When the temperature in the refrigerator reaches its desired value, the thermostat will shut down the compressor automatically. Never take this normal operation as a problem; care should be taken to differentiate it from other real problems in servicing.
- Page 27 c) Check the thermal relay to see whether its contacts are closed. Analysis of Trouble The contacts of thermal relay sometimes may be open due to the leakage of temperature sensing agent from the temperature sensor. Remedy Remove the relay cover to check up its contacts. If they are open, this means that the original setting is not properly set or temperature-sensing agent has leaked out of the temperature sensor.
- Page 28 Remedy Replace the old one with a new one. iv) Check the terminals for loose connection and electric circuits for other abnormal phenomena. Mechanical faults of compressor i) Seizure of shaft This is normally caused by poor lubrication, insufficient quantity of lubricant, clogging in the lubricant oil’s line, or intermittent lubricant oil supply.
- Page 29 b) Thermostat is malfunctioning and makes the compressor running continuously Analysis of Trouble When the thermostat does not work normally, it will make the compressor run continuously, and hence very low temperature will be achieved in the refrigerator. The fault is generally because the contacts of the thermostat cannot be released.
- Page 30 Electric leakage of refrigerator Slight electric leakage Electric insulation has deteriorated due to being affected with damp, thus resulting in slight electric leakage. Serious electric leakage Refrigerator case 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.
- Page 31 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 becomes weaker or vanishes. If the refrigerator has not been levelly placed, put a level meter on its top table and adjust the leveling screws on its legs.