Daewoo Fra 280wp Service Manual
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Refrigerator July . 2\ 005 4 Caution : In this Manual, some parts can be changed for improving, their performance without notice in the parts list. So, if you need the latest parts information,please refer to PPL(Parts Price List) in Service Information Center
2PARTS INENTIFICATION 1. Ice tray 2. Wire tray in freezer 3. Temperature regulator 4. Storage shelves 5. Crisper cover 6. Crisper 7. Door shelves(eggs tray inside the upper shelf)
4The guide for Disassembly Common parts of Refrigera tor The instruction of replacing Lamp. The picture shows the location of the lamp Remove the lamp cover and take out the lamp. The instruction of replacing thermostat. Remove the screws and take out the Controller Unplug the connecting wire Remove the Temperature control knob and loose the the fixing nut of the thermostat
5And then ,you can replace the thermostat The instruction of replacing Door switch. You can easy to use a screwdriver to take down the door switch like the right picture. The appearance of the door switch. The instruction of replacing PTC Starting relay and Overload protector. You can easy to use a screwdriver to take down Spring tap and Cover. Unplug the connecting wire of the PTC Starting relay and Overload protector. The instruction of replaceing PTC Starting relay an d Overload protector.
6You can easy to use a screwdriver to take down Spring tap and Cover. Unplug the connecting wire of the PTC Starting relay and Overload protector. Then you can replace the new one now TROUBLESHOOTING ■ Common default tests method. Check the problem by observing Request detail a) C hecking the temperature of the using condition is according with the specification or not. temperature between 18-43 degrees b) Good ventilation, with at least enough room for heat dissipation around the refrigerator. The appropriate space for running unit will be belo w: Refrigerator back ≧ 10MM Refrigerator two sides ≧ 20MM Refrigerator top side ≧ 30MM C) Whether the voltage range meet the requirement of the nameplate On normal conditions, voltage fluctuation is allowe d to be between 10% of rated voltage, whilst if it exceeds a lot or sometimes high sometimes low, the compressor would be effected and even burned down. When voltage is too high, the motor coil will be bu rnt down, whilst
7if it is too low, the compressor would be difficult to start and the frequent starting will lead to burning down the motor. Check if the refrigerator’s appearance and internal parts are in good condition. a)check the gasket Through switching the refrigerator door to see whet her the gasket is tight and if there’s gap between the cabinet and seal. b)check the door switch If the lamp is in good condition but it doesn’t wor k when opening the door, we should check the door switch. c)Check the thermostat knob Checking the location of thermostat knob is directl y connected with the refrigerator’s cooling. Observe all parts of the refrigerator a)Check the cooling speed To check the cooling speed of freezing cabinet with electronic thermometers so as to check if the refrigerator is able to lock the cooling and in good cooling condition. b)Check the outside tube Checking the refrigerator’ s pipeline system mainly exists in checking whether there is leakage: for example,as t he seal of Process tube, the suction pipe, the exhaust pipe we lding and the connection of drying filter are prone to leak, we s hould carefully examine. The checking method is to wipe the connect ion of the tube with a piece of white cloth and see if there’s oil, if does, there’s leakage. Discriminate default by temperature a)To check the default b y measuring compressor’ s temperature When the compressor is in normal operation and it w ill obviously hot. b)To check the default b y measuring dry filter’ s temperature When the dry filter is in normal condition and it w ill obviously a little hot. c)To check the default b y measuring suction tube’ s temperature When the suction tube is in normal condition and an d it will obviously cool. d)To check the default b y measuring discharge tube’ s temperature When the discharge tube is in normal condition and it will obviously a little warm. e)To check the default b y measuring condenser’s temperature When the condenser is in normal operation and by te sting its temperature, we can assure that the temperature fro m the entrance to the exit is regressive (the entrance is hotter t han the exit). f)To check the default b y touching evaporator’ s frosting When in normal operation and we touching the evapor ator’ s frosting, it shall not easy to erase. Discriminate default by running noises a)Checeking the compressor’s noise When compressor is running,it shall go with rhythmi c low-frequency sound; b)Checking the refrigerator flow’noise If there’s “sisi” sound between capillary and evapo rator’s transition, the refrigerator works normally
8■ The common problem judgement method Problem Cause Refrigerator can’t start 1.1 Is the power cord connecting well? 1.2 Is the power voltage too low? 1.3 Is the thermostat irrational setting? 1.4 Is the ambient temperature too low? 1.5 Is the circuit on power? 1.6 Is there some default in compressor 1.7 Is the refrigeration system blocked by ice or d irty ,please stop the unit and restart after 10 minutes to see if the co mpressor can start. Weak cooling effects 2.1 Is there any heat source around the refrigerat or? 2.2 Is there enough space around the refrigerator f or rejection o f heat? 2.3 Is the setting of the thermostat appropriate? 2.4 Is there too much food or overheating food in i t? 2.5 Does there open the door frequently? 2.6 Is the door completely closed? 2.7 Does the gasket destroyed or distort? 2.8 Does the refrgeration leak? The unit can not stop running 3.1 Is there any heat source around the refrigerat or? 3.2 Is there enough space around the refrigerator for rejection of heat? 3.3 Is the setting of the thermostat appropriate? 3.4 Is there too much food or overheating food in i t? 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 refrgeration leak? Ice up in the freezing chamber 4.1 Is the setting of the thermostat appropriate? 4.2 Is there multi-moisture food and too close to t he back wall of the refrigerator? 4.3 Is the ambient temperature too low? 4.4 Is the electric parts on good condition, specia lly the thermostat wich will cause the unit non-stopping. Abnormal noise 5.1 Is the refrigerator stably placed? 5.2 Does the refrigerator bump other objects? 5.3 Whether the internal accessory of the refrigera tor is in the right place. 5.4 Whether the water plate of compressor is fall f rom the unit. 5.5 Does the tube of the refrigeration system bump each other? 5.6 The noise sound likes Water flow inside the ref rigerator ,in fact,it is normal, which is caused both when refrigerator s tart and shut-down ; in addition, frost-dissolving causes this sound, t oo, which is a normal phenomenon. 5.7 There will be a cracking sound in the cabinet,w hen the cabinet or cabinet accessory contracting or expand ing, this sound will be made, which is normal.
95.8 The motor operation sound in the compressor is appears to be louder at night or begin starting , which is a normal phen omenon; also the uneven placing would lead to too much running noise. There is a peculiar smell in the units 6.1 Is the food with special smell sealed tight? 6.2 Does it have long time storing food or degenera ted food? 6.3 Whether the internal cabinet needs cleaning. the forefront or the middle cabinet heats 7.1 As fridge Anti-condensation tube is placed here and caused the above phenomenon, which is normal. Refrigerator’s two sides or the back heat 8.1 As condensation tube is placed here and caused the above phenomenon, which is normal. the cabinet surface condensation 9.1 Air humidity is too large. ■ The solution for the common problem. 1.Cooling is not enough good (Many reasons might cause that cooling not enough g ood, as blow:) Reason analysis resolvent 1) Leakage of Gas If some Gas leaked unit will work not well. Phenomenon of failure: a, lower pressure of liquid cycle system b, high temperature of copper tube of discharging gas, hand feels very hot. C, much noise, sounds like “ZZZZZ”, comes from outlet of capillary. d, there is no or less ice on the evaporator. Solutions: First find out the point of leaking on tube, and then sealed it, vacuuming it, finally recharge with Gas. Attention please on that below: If you find oil on somewhere, it is possible that leakage point is there. 2) The quantity of Gas is too much If too much Gas was charged into the cycle system, the extra Gas will occupy some space of evaporator, so that the area of heat exchange becomes less, unit will work not well. Phenomenon of failure: a, higher pressure of liquid cycle system than norm. b, higher temperature of condenser. c, larger electric current of compressor d, there is less ice on evaporator, but there is ice on the absorbing tube. e, when Gas is too much, some Gas liquid might goes back into compressor, compressor will be damaged by liquid. Solutions: First stop unit for several minutes, and then open charging tube, discharge all of Gas. Change a new filter, and then recharge Gas, finally sealed the system. 3) There is air in the liquid cycle system The air in system will cause lower efficiency of cooling. Phenomenon of failure: a, higher pressure of liquid cycle system Solutions: First stop unit for several minutes, and then open charging tube, discharge all of Gas.
10 than norm, but the pressure is not over the limit. b, higher temperature of discharging tube. C, much noise Change a new filter, and then recharge Gas, finally sealed the system. 4)Low working efficiency of compressor General when a compressor works for many years, some parts of compressor were wear, so that compressor discharge less gas out, unit does not work strongly. Phenomenon of failure: a, lower pressure of discharging, check the pressure of system with pressure meter to see if it is normal. b, higher temperature of compressor surface. C, cut off the discharging tube, to see if you can block the gas coming out of the tube when compressor is working. Solutions: Change a new compressor. 5) There is thick ice on the evaporator For defrost refrigerator you need to defrost ice termly Solutions: Turn off the unit and working, open doors for defrosting 6) There is something that blocked the liquid cycle system Some time there is something blocked the filter of liquid cycle system, so that unit is not cold Phenomenon of failure: a, lower pressure of discharging b, lower temperature of discharging. Solutions: Change a new filter 2.NO COOL (Popular failure reasons are below): Reason analysis resolvent 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. Solution: First find out the point of leaking on tube, and then sealed it, vacuuming it, finally recharge with Gas. Attention please on that below: If you find oil on somewhere, it is possible that leakage point is there. 2)There is some thing that blocked the liquid cycle system A,Ice blocking Sometime because unknown reason water comes into liquid cycle system, the capillary will be blocked by water after unit runs for period of time. Phenomenon of failure: The unit works well in the inception, after period of time Solution: First stop unit for several minutes, and then open charging tube, discharge all of Gas. Blow the cycle system with gas of nitrogen, and then recharge Gas, finally sealed the system.