SERVICE MANUAL - Appliance Factory Parts
Contents
1. 11 5 Sensor and Error code 12 6 TROUBLESHOOTING 13 30 6 1 Common Troubles in Refrigerators and Remedies 13 24 6 2 Instruction of replacing mullion heater and sensor 25 30 7 Other Icemaker and defrost details 31 PRODUCT CODE and SERIES INTRODUCTION Model Designations Bottom Mount 21 25 cu ft Refrigerator Freezer Details BFS21EDAW White S Stainless B Black V Virtual Stainless A Production Series D Dispenser and Icemaker I Icemaker E Elite S Supreme T Plus 21 Capacity S Spill proof shelving F Four doors B Bottom Mount Freezer P Phoenix series Standard series PARTS IDENTIFICATIONS Chill cold storage floodlight Freezer A S GED hole eT eS storage rackod box Se pl as f 1 bottled seat es food box CE Ice making drawer _ p MM Deepfreeze refrigeration big drawer Ice maker fridge Ice spoon Ice meeting drawer Dra2. 1 2 temp sensor 3 main water 4 light switch 6 damper htr 10 Damper mtr 4 ice maker water valve 5 dispenser water valve LM LL mim Fil a ic 6 neutral N 11 PRCS25 also line to 1 line to pwr AM compressor 2 line fresh food lamps 4 tz Bo BEC 54 CN 2 To top 3 neutral to power board 1 TU E a ES 5 display 4 neutral fresh food lamps CN 8 1 freezer lamp xn Not used CN 4 Freezer 1 2 temp sensor 2 auger motor 3 ice crusher solenoid 3 4 dfrst sensor 5 6 light switch 7 9 cond fan mtr 5 defrost heater fuse 10 12 evap fan n ar P 5 motor 6 neutral CN9 Dispenser CN 5 1 neutral 1 2 disp door htr 3 6 to door display 2 lce dispenser TS Mi UR T UM 41 x eo door solenoid B DUM JE lE D 3 dispenser heater 1 M 8 ambient Mg temp sensor 4 dispenser lamp 5 dispenser arm switch e C 22 9 10 light switch 1 2 ice mkr sensor 7 8 temp sensor 7 10 ice maker motor 3 6 damper motor 1 2 damper heater SENSOR AND ERROR CODE EA Fl REF sensor Right side wall of Fresh food compartment tly we e b T 4 ail i Centigrade REF sensor Ambient sensor KQ FRZ sensor Icemaker _ sensor Defrost ERES I m _ 18 9 eh 4 951 3 887 3 07
3. Reduce the thermal load pay attention to the variation in voltage of the power supply c Abnormal thermal protection Analysis of Trouble The compressor current is within its normal range but the thermal protector actuates repeatedly Remedy Replace the thermal protector with a new one 3 Sudden stoppage due to other causes Normal Stoppage A 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 trouble care should be taken to differentiate it from other real troubles in servicing D Compressor won t start In case the compressor cannot be started you must find out the origins of this trouble through checkup step by step because probably there are many causes including those electrical and mechanical 1 Inspect the power supply to see whether it is connected to the compressor circuit Analysis of Trouble In case the compressor cannot be started this will generally exhibit in the power supply circuit for instance power failure poor contact of switch and blown fuse Make a comprehensive analysis of these phenomena find out its real cause and take correct measures to remove this trouble Remedy a Check the input power circuit to see whether where is voltage of the power supplies namely the circuit which is connected to the knife switch This c
4. capacity under the condition that the refrigerant in the system is unchanged This phenomenon occurs mostly when the compressor has been used for quite a long time its moving parts have worn to a considerable degree fit clearance between various parts have increased and sealing property of its gas valve has deteriorated resulting in an decrease in its actual gas discharge capacity Methods of Judgment Measure the high and low pressures with pressure gauges to see whether they are normal If an abnormal sound comes from the compressor or the temperature of its causing is too high cut the discharge port open and operate the compressor feel it if there is pressure at the discharge port with your finger For a normal compressor its discharge port is difficult to be blocked with your finger if you just apply a little effort 5 Refrigerating oil left in evaporator tubing Analysis of Trouble During the process of refrigerating cycles a little refrigerating oil may remain in the evaporator tubing and after a longer time of operation if there is considerable refrigerating oil left in the evaporator the heat conduction effect will be severely affected thus causing a poor refrigerating effect Remedy It is quite difficult to determine whether this trouble is caused by the refrigerating oil left in the evaporator tubing because this kind of phenomenon and other several trouble are tends to be confused Generally speaking you can make a
5. cold storage temperature adjusting button L Chill cold storage quick deepfreeze fridge le Water filter reset button N Water filter indicating lamp CONTROL AND DISPLAY SYSTEM 1 Lock and Unlock just for PBFS21 PRFS25 Series D A B C Press Button C after the first sound of the buzzer fix the indicating lamp to be lighted and the clock setting of the door body vision cannot be operated and the function of taking out cold drinks is locked press Button C again after the first sound of the buzzer fix the indicating lamp to be out and the clock setting of the door body vision operation is recovered 2 Chill cold storage temperature adjustment Only apply for the models without the function of taking out cold drinks Press Button J or Button K the chill cold storage temperature vision area will flicker and when the chill cold storage temperature is set the range of the chill cold storage temperature is 34 degrees to 46 degrees and each time you press Button K the chill cold storage temperature will increase a level till the highest Level Seven is reached each time you press Button J the chill cold storage temperature will decrease a level till the lowest Level One is reached CONTROL AND DISPLAY SYSTEM 3 Deepfreeze fridge temperature adjustment EN m m merc 00 Only apply for the models without the function
6. in the refrigerator is too much there be the following two situations 1 the refrigerator very low this means that the control system is probably out of order ii the control system works normally and there are troubles in the refrigerating system or other parts 1 Temperature is set improperly a The temperature control knob is set to the coldest position This position is to be used for fast freezing or continuous running its temperature for power off is too low therefore the compressor won t stop and the temperature in the refrigerator becomes lower and lowers b Inspection method check the temperature control knob to see whether it is set in the position coldest 2 Thermostat is 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 totally out of functioning replace it with a new one 3 evaporation temperature is too high in refrigerating system resulting in lower refrigerating capacity and hence continuous running of compressor Analysis of Trouble Leakage of refrigerant and clogging in a refrigerating system will directly affect its refrigerating capac
7. 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 case no other troubles have been found To clear off refrigerating oil left in the evaporator dismantle the evaporator purge it thoroughly and then dry it In case it is difficult to dismantle it charge refrigerant from the evaporator inlet to wash it several times then purge and dry it with nitrogen 6 Flowing obstructed in refrigerating system Analysis of Trouble Because the refrigerating system was originally not purged thoroughly some of the filter screen meshes have been clogged by dirt accumulated in the filter after using it for a certain time of period thus resulting in a decrease in flow rate and hence a poorer refrigerating effect The abnormal phenomena caused by this kind of slight clogging in the system are as follows the gas discharge pressure is lower the temperature of discharged gas drops down the position clogged has a temperature lower than that in normal conditions and for a severe clogging even dew condensation as frosting may appear Remedy Purge the tubing and after replacing the dry filter with a new one or clearing it thoroughly recharge the system with refrigerant and seal the charging port B No Refrigerating The phenomen
8. of taking out cold drinks Press Button G or Button H the deepfreeze fridge temperature vision area H will flicker and when the deepfreeze fridge temperature is set the range of the deepfreeze fridge temperature is degrees to 8 degrees and each time you press Button the deepfreeze fridge temperature will increase a level till the highest Level Seven is reached each time you press Button F the deepfreeze fridge temperature will decrease a level till the lowest Level One is reached 4 Door body vision time adjustment just for PBFS21 PRFS25 series C When pressing Button A and Button B at the same time for three seconds the time sign D will begin to flicker after the first sound of the buzzer Press Button A to adjust the hours each time you press Button A one hour will be increased till 23 hours is reached then press Button A again 00 will be shown Press Button B to adjust the minutes each time you press Button B one minute will be increased till 59 minutes is reached then press Button B again 00 will be shown CONTROL AND DISPLAY SYSTEM 9 Refrigerant quick deepfreeze refrigeration setting The function of quick deepfreeze refrigeration is to refrigerate the food completely in the shortest time Press Button E the refrigerant quick deepfreeze refrigeration button indicating lamp will be lighted and the refrigerator will be in the refrigerant quick deepfreeze refrigerat
9. some abnormal sound coming from the compressor sometimes the broken pieces of valve block may strike against the cylinder and feel the compressor casing with your hand to ascertain whether it is too hot this is also helpful to the troubleshooting secondly measure the pressures at the high and low pressure ports of the compressor with pressure gauges if the gas suction valve block is broken the suction pressure gauge pointer will swing violently and the suction pressure is very high whereas when the gas discharge valve block is broken the discharge pressure gauge pointer Will swing drastically and the discharge pressure is very high In the both cases stop the compressor at once and if technique is available open the cylinder cover and check up the valve block repair it or replace it with a new one C Sudden stop of Compressor during Its Running The cause of sudden stop of a compressor during its running is mostly that the gas suction pressure and or discharge pressure exceed their respective prescribed ranges thus making a pressure operated protective relay 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 effe
10. the refrigerating system Leak points appear mostly in those low temperature parts or assemblies because the evaporation temperature is lower for such low temperature devices especially at the low pressure end it is easier for the air goes 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 2 Stoppage due to electric troubles a Thermostat is out of control Analysis of Trouble In case the thermostat does not work in its good order or its temperature sensor has not been installed properly frequent stoppage is also likely to occur Remedy Try to adjust the temperature sensor s position until the compressor can be started and stopped normally If this 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 supply voltage drops considerably the current flowing through the motor will increase drastically making the thermal protector actuate and the fuse blown and hence the motor stops running If the motor is still running continuously in such a case its windings will be burned out Remedy
11. work adjust them ESI At the same time press the two buttons of FRZ temperature adjustment and The compressor and fan motor will start under this compressor start hold on for 3 seconds there will be T1T1 display panel which means mode Check the compressor can work normally not If mode mandatory start mode so skip steps 5 to 9 if not skip steps 3 4 Check temperature of FRZ Check the FRZ temperature meet the START temperature or not thermometer Emperaire CONAN meet the START compartment temperature compressor will not start Check the resistance of FRZ sensor accord with the actual FRZ temperatur If the resistance does not accord with the or not thermometer multimeter temperature compressor will not start because the senso Notice Please check the resistance and the temperature data above passes low temperature parameter to main control PCB Check the FRZ sensor 5 TQ Check those connectors of main control PCB display PCB Inverter PCB and j the compressor terminal Make sure that connection of signal input terminal on Inverter PCB is right Notice right of signal input terminal is while the left is Check connection on multimeter If it s wrong connection reconnect them of and black wire on right side is Measure the voltage of two black wires and the red wire signal control wire If th
12. 3 2 446 1 96 1 58 1 281 1 046 5 051 3 965 3 134 2 493 1 977 1 609 1 304 1 064 Fi i 5 Y j af 1 TROUBLESHOOTING 1 Analysis of Troubles and Troubleshooting A Poor Refrigerating Effect The so called poor refrigerating effect refers to the fact that the refrigerator can operate and refrigerator normally but the temperature in the refrigerator cannot drop to the prescribed value under the stipulated working conditions In view of there are many causes for this phenomenon we are going to discuss and analyze it in the following 7 aspects 1 Leakage of refrigerant Analysis of Trouble The leakage of refrigerant in the system will result in an insufficient refrigerating capacity the resulting phenomena are its lower gas suction pressure and exhaust pressure as well as higher exhaust gas temperature The exhaust tube feels rather hot and a continuous gas flowing sound louder than usual can be heard at the outlet of the 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 from where it leaks welding points and parts Afte
13. 6 Too high ambient temperature poorer ventilation and heat dissipation makes the compressor running without stop F Electric leakage of refrigerator 1 Slight electric leakage Electric insulation has deteriorated due to being affected with damp thus resulting in slight electric leakage 2 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 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 the first thing you need to do is to determine whether the grounding is perfect If the grounding is no problem turn off the refrigerator immediately then check the insulation of electric circuits with an avometer b Serious electric leakage Never touch the case body of the refrigerator its door handle or other metal parts with your hand Test the refrigerator with a test pencil it will light up intensively measure the resistance between the power cord plug and the case body with an avometer the reading will be zero 0Q in the worst case the fuse will be blown Check the 3 prong outlet to see whether the live wire and the null line are inversely connected this makes the ground protection lead
14. CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE Haier Refrigerator SERVICE MANUAL MODEL PBFS21EDAW B P S E RBFS21TIAW B P S E RBFS21SIAW B P S E PRFS25EDAP S E O Features 1 Chill drawer for delicatessen 2 Slide out shelf for easy food access 3 Optimized condensing system 4 Pre cooling for defrosting for freshness storage o Automatic problem detecting and warning system door cooling warning system 6 Vitamin C technology for fresh food storage 7 1 making 8 Intelligent operation for automatic operation 9 Dispenser for cold drinks Haier Group 5 CONTENTS PAGE 1 PARTS IDENTIFICATIONS 1 2 DISASSEMBLY of 2 3 CONTROL AND DISPLAY SYSTEM 3 8 Control and display panel 3 8 4 REFRIGERATION PRINCIPLE 9 System flow chart 9 4 CIRCUIT DIAGRAM 10 11 4 1 Schematic 10 4 2 Connect diagram
15. N10 C 2 REFL itch 54 amp switch 54 FRZ sensor Defrost sensor LL FRZ lamp switch 1A T Door display PCB REF E damper E damper heater 12V 1W 144 100 E damper motor 12V GND TX Cooling motor Freeze motor OGBK BKWT BU VL RD ETE INR UH BHEEDHHUH allsa efas fojni CON CON2 CON4 CONS Main control PCB CONT 115V 250W R 52 9 3Q REF lamp left 115V 25W 0 5A REF lamp right 115V 25W 0 5 VI ATI SAA JojeM pyew SH ee p i UJ Horizontal Mullion heater H R 529 350 1uadSIq RDIT BU PL Ambient temperature sensor CONG 9 co Le E Dispenser swtich 115V 1A Icemaker sensor GY Vs WT GND Icemaker Humidity sensor Mother Board Wiring Connections z j Tm i n gos 4 Bes HOT del KI CE ii d 2 ICN to dispenser t y TETTA display panel neutral T 19 P q CN 10 i al re di E 1 drawer lamp BoB ric kr a a RRCS25 line to compressor NE Er dE x 5 CN 1 Fresh Food PRCS25 not used diac m ayia LA t 2
16. an be determined with an avometer or a test pencil If a blown fuse is found ascertain and remove its cause then replace it with a new one of the same specifications b Check the compressor accessories including its thermal protector and relay In case the thermal protector is damaged the compressor cannot be powered on If the relay is out of 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 it is normal Analysis of trouble If the circuit voltage is obviously lower than its rated value it will be difficult to start the motor and a hum sound can be heard from it Remedy Measures the voltage with a voltmeter if it is really too low give directions to the user for buying a stabilizer so as to step up the voltage thus normal operation can be achieved 3 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 settin
17. ct may occur if excessive refrigerant has been charged into the system Superfluous refrigerant will occupy a certain space of the evaporator thus reduce its heat dissipating area and the phenomenon of liquid striking may occur too Meanwhile dew or frost condensation may occur on the gas return tube and the gas discharge pressure will obviously rise when it reaches the threshold value the protective relay will actuate and shut off the power supply to the compressor Remedy Open the tubing re evacuate and then charge the system with a proper quantity of refrigerant b Air left in the system Analysis of Trouble The residual air in the system will circulate together with the refrigerant in the system The major symptoms caused by this residual air is higher gas discharge pressure higher discharged gas temperature the gas discharge tubing is considerably hot when you feel it with your hand and poorer refrigerating effect Furthermore the gas discharge pressure will exceed its normal value when the compressor has run for a period not too long thus making the protective relay actuate and bring to a stoppage Remedy Check up how the air has been left in the refrigerating system Generally there are two possibilities one is that the air has been sucked into the system when repairing due to carelessness or it has not been purged out totally when evacuating the system the other is that there are leak points at the low pressure end of
18. d refrigerant evaporates and effervesces as soon as it flows into the refrigerating oil at the bottom of compressor If the condition is severe foams will fill all over 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 and several minutes later open the refrigerant charging tube and let the refrigerant escape from it replace the dry filter recharge refrigerant after evacuating and then seal the charging port 3 There is air left in the refrigerating system Analysis of Trouble Residual air in the refrigerating system will reduce its refrigerating efficiency The prominent phenomena are the increase in its gas suction and exhaust pressures however the gas exhaust pressure will not exceed its rated value obvious 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 compressor Analysis of Trouble Low efficiency of a refrigerating compressor refers to the actual reduction of gas discharge capacity and hence the corresponding reduction of refrigerating
19. en 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 evacuate the system and finally charge refrigerant 2 Refrigerating system has been clogged a Clogged with Ice Analysis of Trouble The dryness treatment for the major parts in the refrigerating system has been performed improperly the effect of air purging for the whole system is not good or the water content in the refrigerant is out of standard all these will cause the expansion valve to be clogged with ice The symptom for this trouble are as follows the refrigerator sometimes can refrigerate and sometimes cannot the refrigerator compartment works normally at the beginning but after working for a certain period of time frosting begins at the clogged position evaporation temperature reaches below 0 C water will accumulate at the narrow part of the capillary and clog it gradually then frost begins to melt at the evaporator no gas flowing sound can be heard and the gas suction pressure assumes a state of vacuum Note that these phenomena will appear intermittently sometimes refrigerator works well and sometimes not well order to determine whether it is clogged with ice heat the suspicious points with hot water to make ice melt and after a while if a gas flowing sound resulting from an abrup
20. ere is no voltage the signal wire or main control PCB Test the output of i of Inverter PCB is bad if the voltage is too high the main control is 9 multimeter must be on DC generally speaking the voltage is bad if the voltage is normal check power input of inverter main control PCB 2 BV PCB Check the inverter the voltage is normal the inverter PCB or compressor is bad Then If the compressor couldn t start after replacing inverter Inverter PCB new inverter PCB and check the compressor start or not PCB the compressor is bad 1 The resistance is abnormally 2 Measure resistance of two terminals between the three ones if the reading is infinity there is open circuit if the reading is zero there is short circuit 3 Connect one pole of the multimeter with one terminal while the other pole is connecting with earth wire if the resistance is less than 2MQ there is electricity leakage of compressor 1 Adjust the resistance dial of multimeter to zero measure the resistance the three terminals of compressor If the voltage is normal the compressor doesn t run but there is sound of wengweng the compressor is short circuit multimeter pan 2 If the voltage is normal the compressor doesn t run and there isn t sound screwdriver cross of wengweng the compressor is open circuit screwdriver 3 Put the measure pen on shell of compressor if the lamp of measure pen
21. ff the heater and SSA M replace new one Then VAN B Install it according to the a Se steps above Instruction of replacing Horizontal Mullion heater 1 Remove the screws fixing horizontal mullion 2 Dismantle the horizontal mullion and 1 Use a tooth washer to fix the earth wire 2 Be careful the distortion of clip will cause gap between the airproof and horizontal mullion 3 Disconnect the 4 Remove the screw fixing earth wire of clip and mullion heater heater then tear off the heater o Install the horizontal mullion according to the above steps Instruction of removing FRZ sensor on 21 25 series 2 Remove the rear gasket of FRZ airpassage cover then you can see the FRZ sensor Place the sensor in middle of the clips 1 Remove the FRZ airpassage cover 3 Take off the sensor from the clip 4 FRZ sensor wire Install the FRZ sensor according to the above steps e TROUBLESHOOTING Instruction of replacing sensor Instruction of replacing sensor Step Tools Operation content Open up sensor cover nip 1 remove fault Scissors connection thread of which near to part Sensor root place Cut off insulation skin orderly till appearing two thread with length of 2 poke knives 10mm new sensor head also c
22. g is not properly set or temperature sensing agent has leaked out of the temperature sensor Try to turn the adjusting stem of this value in the direction of the lower temperature graduation then check the contacts to see whether they are closed If they are still not closed dismantle the temperature sensing disc and then immerse it into warm water to see whether the contacts actuate if not it can be preliminarily determine that temperature sensing agent has leaked out and it must be replaced with a new thermostat 4 Motor troubles and other electric faults a Motor windings have been burned or short circuited between turns Analysis of Trouble When motor windings have been burned or short circuited between turns the fuse will be blown repeatedly and the blowout occurs particularly at the instant when you close the knife switch Remedy Check the terminals and the outer casing to see whether they are short circuited and measure the resistance of each phase with an avometer If short circuit occurs or the resistance of a certain phase is low this means that short circuit does exist in the windings and or between turns and insulation layers have been burned or deteriorated A megametre can be used in this inspection too If the insulation resistance is lower than 2 this means that the insulation layer is already breakdown If the motor has been burned repair it or replaced it with a new one b Fault of control relay Analysi
23. ion state and the refrigerator will be out of the refrigerant quick deepfreeze refrigeration state after it enters the refrigerant quick deepfreeze refrigeration state for 4 hours if you want the refrigerator to be out of the refrigerant quick deepfreeze refrigeration state forcefully after it enters the refrigerant quick deepfreeze refrigeration state for three hours you can press Button E again and the refrigerant quick deepfreeze refrigeration button indicating lamp will be out and the refrigerator will be out of the refrigerant quick deepfreeze refrigeration state 6 Chill cold storage quick deepfreeze refrigeration setting Press Button L the chill cold storage quick deepfreeze refrigeration button indicating lamp will be lighted and the refrigerator will be in the chill cold storage chill cold storage quick deepfreeze refrigeration state and the refrigerator will be out of the chill cold storage quick deepfreeze refrigeration state if the chill cold storage temperature is 2 F lower than its designed temperature if you want the refrigerator to be out of the chill cold storage quick deepfreeze refrigeration state you can press Button L and the chill cold storage quick deepfreeze refrigeration button indicating lamp will be out and the refrigerator will be out of the chill cold storage quick deepfreeze refrigeration state A When the refrigerator is in the refrigerant quick deepfreeze refrigeration state and in the chill cold st
24. ion 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 clogging due to dirt Remedy Dismantle the system remove the dry filter from it purge the tubing with nitrogen install a new filter then evacuate it and finally charge it with refrigerant C Clogging in filter Analysis of Trouble Total clogging of a filter is rarely to occur The paste like matter formed from the substances filled into the system mostly causes this trouble or other dust after the refrigerator has been used for a longer time or by the dirt accumulated gradually inside the filter Sometimes tapping the filter nay cause a passage for flowing Touching it with your hand you will feel that it is cooler compared with its temperature in the normal state Remedy The same as described in the capillary clogging with dirt 3 Troubles of Compressor a Breakage of gas suction and discharge valve blocks Analysis of Trouble The compressor works by means of the opening and closing of gas suction valve and discharge valve to suck and discharge the refrigerant If the valve block is broken the refrigerant can not be discharged and hence no refrigerating can be achieved Method for making judgement It is quite difficult to differentiate this trouble from others because they often have similar symptoms In repairing firstly hear attentively if there is
25. is on there is electricity leakage Check the compressor Other 7 Other Icemaker and defrost details 1 You can manually start a defrost cycle according to Pressing FRZ lt FRZ temp adjust keys and RESET or TEST for 3 seconds There will be T1 T1 on display panel 2 Generally speaking there will be a deforst cycle after hours working of compressor lf there is less door openings or the temperature is proper the defrost cycle will increase maybe 90 hours 3 And the humidity sensor does not matter with the defrost cycle 4 Center mullion heater will be function under certain time proportion if the humidity is heavy or more door openings 5 The Center mullion heater will stop working under proper humidity or less door openings 6 And it s 25W 529Q There are the technical datas in connect diagram in service manual 7 The icemaker will stop when drawer is opened even in harvest time 8 You can manually start the icemaker according to pressing FRZ and REF temp adjust keys for 3 seconds the icemaker will cycle one time 9 You can adjust the water lever according to controlling the time of water infusing Press the 2 time adjust keys for 3 seconds then the function of water infusing is available 10 When you adjust the water level you will see CC It means milliliter Sincere Forever Haier Group Tel 86 532 88938356 Web site http www haier com
26. ity Due to the reduction in its refrigerating capacity the refrigerator temperature cannot reach its rated value the thermostat won t work and thus the compressor runs continuously When the evaporation temperature in the system is too high the temperature sensing agent in the temperature sensor is also hotter therefore the thermostat is unable to cut off the power supply to the compressor and stop it Remedy If it has been found that the refrigerant in the system is insufficient in quantity recharge it with refrigerant In case clogging occurs disassemble the part where it is blocked If the evaporation temperature is too high settle this problem with an appropriate quantity of refrigerant 4 No stoppage of compressor due to damaged heat insulation layer inside case body and or door seal Analysis of Trouble When the heat insulation layer inside the case body deteriorates or the door seal is not closely touches the doorframe the temperature in the refrigerator will rise and makes the compressor running continuously Remedy Check the heat insulation layer for its damaged parts repair it 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 respectively 5 Too much food is placed in the refrigerator or is placed too densely resulting in poor ventilation or poor conditions for temperature sensing and hence no stoppage of the compressor
27. l tube heater iar CIRCUIT DIAGRAM 1 Schematic ew HOUSEHOLD REFRIGERATOR PRFS25 Energy m FREE STANDING INSTALLATION ONLY A POWER PLUG B FREEZER FAN MOTOR C ICE MAKER D REFRIGERATOR DAMPER E TOP DISPLAY PANEL F DOOR DISPLAY PANEL G1 REFRIGERATOR DOOR SWITCH1 G2 REFRIGERATOR DOOR SWITCH2 G3 REFRIGERATOR DOOR SWITCH3 G4 REFRIGERATOR DOOR SWITCH4 H CONTROL PANEL COOLING FAN MOTOR J1 DEFROST SENSOR J2 FREEZER SENSOR J3 REFRIGERATOR SENSOR J4 SENSOR ENVIRONMENT K1 FREEZERLAMP K2 REFRIGERATOR LAMP1 K3 REFRIGERATOR LAMP2 L1 BEAM HEATER L2 UPRIGHT BEAM HEATER L3 WATER TUBE HEATER M DISPENSER VALVE N DISPENSER SWITCH O1 THE FIRST WATER VALVE 02 ICE MAKER VALVE P DEFROST HEATER Q FUSE R INVERTER PANEL S COMPRESSOR T HUMIDITY SENSOR 2 Connect diagram for PRFS25ED A series Cabinet display board H3 4 5 6 7 8 Sti ile ET ER Power PCB JW Compressor 164 BN BU Inverter PCB INPUT 115V OUTPUT 220 240V CON ET 16V Pf wt 19 5 REF sensor CO
28. on that the compressor runs normally but no frost or only a little frost appears on the evaporator and the refrigerator temperature does not drop down is called refrigerating There are many causes for this trouble and it is relatively complicated too In servicing special attention to finding direct causes for this phenomenon Three main potential causes for this trouble are analyzed below 1 refrigerant in the system has leaked out Analysis of Trouble Leak points in the refrigerating system have not been found and repaired timely thus resulting in the total escape of refrigerant There are two kinds of leakage 1 slow leakage for instance when we want to use a refrigerator that has been put out of quite a long time we find the leakage of refrigerant or in the course of its operation we have found that the refrigerator is gradually becoming not so cold and finally no refrigerating cab be achieved ii fast leakage in that case all the refrigerant will escape swiftly due to abrupt rupture of system tubing Symptoms of total leakage of refrigerant are mainly as follows the compressor can be started easily if there is no damage to the compressor parts and its operating current becomes low its gas suction pressure is high and discharge pressure is 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 op
29. orage quick deepfreeze refrigeration state within the set time the process of Note refrigerating remain constant without turning off the machine CONTROL AND DISPLAY SYSTEM 7 Turn or turn off the chill cold storage function When pressing chill cold storage adjustment Button J and chill cold storage adjustment Button at the same time for three seconds the chill cold storage sign will be out after the first sound of the buzzer an the chill cold storage function is turn off when pressing chill cold storage adjustment Button J and chill cold storage adjustment Button K at the same time for three seconds again the chill cold storage sign will be on after the first sound of the buzzer and the chill cold storage function is turn on again 8 Celsius Fahrenheit switching function Press Button F and Button G and Button J on the vision board at the same time for three seconds the Celsius will be used after the first sound of the buzzer Press Button F and Button G and Button J on the vision board at the same time for three seconds again the Fahrenheit Will be used after the first sound of the buzzer 9 The indicated meaning of the water filter BB Only apply for the models with the function of taking out cold drinks When the indicating light of the water filter is lighted it means the water filter should be changed And after the water filter is changed please press the water filter reset bu
30. out from the power cord plug being connected to the live wire Another possibility is that the live wire and null line of the outdoor e power supply circuit have been inversely connected accordingly this makes the null line become live wire G Stronger vibration and loader noise 1 Refrigerator placed improperly a Uneven ground Uneven ground will cause the refrigerator to be placed unsteadily causing stronger 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 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 Large noise of the fan a The fan motor is loose b Noise is produced by normal operation of the fan c The impellers are not tightly fixed or eccentrically assembled Remedy For reason a Fasten the fan motor For reason b or c Replace the fan motor or impellers 5 Inspection method To find the sources of noise press the vibration spot with your hand while the refrigerator is in operation and listen attentivel
31. r having them repaired recharge refrigerant There are so many joints and sealed surfaces in a refrigerator accordingly quite a lot potential leak points do exist in the system In troubleshooting pay attention to those parts that are liable to leak check main connection points for oil seepage and tubing for cracks If there is no severer leak point charge the system with nitrogen and detect leak points with the commonly adopted method repair them evacuate charge the system with refrigerant and then turn on the refrigerator to make a test run 2 Too much refrigerant charged into the system Analysis of Trouble a In case the amount of refrigerant charged into the system exceeds its nominal capacity the superfluous refrigerant will of course take some space of the evaporator thus reducing its heat dissipation area and hence the refrigerating efficiency of the system The abnormal phenomena caused by this reason are as follows the gas suction and exhaust pressures are generally higher than their respective normal values the temperature of its condenser is higher and the electric current of the compressor rises loose frost forms on the evaporator the refrigerator temperature drops slowly and frost appears on the gas return tube b In case excessive refrigerant has been charged the liquid refrigerant that can not evaporates in the evaporator will return to the compressor and thus a phenomenon of liquid striking will occur The liqui
32. ry Filter 4 condenser 5 Mullion Heater 6 Evaporator f Capillary tube SYSTEM FLOW SCENOGRAPH 1 Compressor J Hot Connector pipe DQ Nonanr 5 LONG gt O reezer anti sweat ar TTA rier filter Capillary Evaporator 8 Suction 3 Connector pipe 10 Compressor DC 1 Freezer DC fon Defrost stee
33. s of Trouble Overheat burnout or wear of control relay contacts may occur generally All these will cause poor contact in electricity Remedy Dismantle it to repair or replace it with a new one c Poor electric contractor in thermostat Analysis of Trouble Burnout of contractor and leakage of temperature sensing agent may occur generally Remedy Replace the old with a new one d Check the terminals for loose connection and electric circuits for other abnormal phenomena 5 Mechanical faults of compressor a Seizing of shaft This phenomenon is caused mostly by poor lubrication such as insufficient quantity of lubricant clogging in the lubricant oil line or intermittent lubricant oil supply Dirt and other impurities in the lubricant oil will increase its viscosity and cause the shaft to be seized Copper plating may also result in seizing of shaft b Seizing of piston This is caused by too small fit clearance between the piston and cylinder or expansion due to heat Judgement of seizing shaft and piston After the refrigerator has been powered on the compressor will not start and run but a slight hum sound can be heard and several seconds later thermal protective relay will actuate and make the contacts open this process will occur repeatedly but the compressor cannot be started E Compressor won t stop Sometimes the compressor will run continuously for several hours or run without end If the food placed
34. t gush is heard and the gas suction pressure rises as well it can be confirmed that the trouble is caused by ice clogging Remedy If there is too much moisture in the refrigerating system it is advisable to release the refrigerant purge the tubing with nitrogen and then charge the system with the filtered refrigerant However the commonly adopted method is to connect a filter with moisture absorbers such as silica gel anhydrous calcium chloride to the refrigerating system so as to filter out the moisture from the system then replace the filter evacuate it again and finally charge the system with refrigerant b Clogged with dirt in capillary Analysis of Trouble The capillary inlet is a place where coarse grained dirt or refrigerant oil in the system will tend to settle down and clog it In case considerable dirt accumulates there the whole filter screen may be blocked totally making the refrigerant unable to go through Clogging with dirt exhibits the same symptoms as that with ice namely higher gas suction pressure lower temperature of discharged gas and no gas flowing sound from the evaporator The difference between the both is as follows if the clogging is caused by dirt tapping the suspicious 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 react
35. tton M and the indicating light of the water filter N is out CONTROL AND DISPLAY SYSTEM 10 The function of showing and controlling 30 seconds after Operating the refrigerator by pressing the button the vision screen is out automatically and if you press any button or open any door or take out the cold drink the vision screen will be shown to be on 11 Exceptions Indicating When exceptions on the main controlling function of the refrigerator happen the exceptions signs will appear on the vision areas of the chill cold storage or refrigerant temperature and the exceptions signs are F1 F2 F3 F5 F6 Ed ER EO EI E2 If this case really happens please consult the sold repairing department to have the refrigerator repaired in order to test the optimizing controlling of the refrigerator 12 Door opening alarm When any door body is opened for over 60 seconds the door opening alarming function of the refrigerator will be started and the refrigerator will produce buzzers at the intervals of 30 seconds which shows to the user that there is a door body is open 13 Power breaking memorizing function When the refrigerator is cut off the state of the refrigerator before the power breaking is memorized and then the refrigerator will be operating with the default values before power breaking REFRIGERATION PRINCIPLE SYSTEM FLOW CHART 1 Compressor 2 Mullion Heater 3 D
36. ut off insulation skin i 10 make sure connection thread 25mm around Cut off isolation skin about 2 3 3 repair knives of 10mm two thread and with connection electric mM u electric iron plating soldering tin 4 port Iron connection port electric Make pyrocondensation tube cover Iron pyr the two thread and with electric iron 4 connection oconde jointing two ports old sensor port nsation and new sensor port pay attention pipe to not causing burr After jointing together make pyrocondensation located electric connection jointing point middle iron part heat up pyrocondensation pipe 5 seal MEM seal in order to make it shrinkage and glue cover jointing point firmly and dripping seal glue in order to wet corrupt Install sensor to sensor cover then 6 install a ae fix it up Instruction of compressor check 1 Measure the voltage of power with a multimeter if it beyond standard scope adjust it to normal scope multimeter pan Too high or too low voltage of power bad connection of Check the power Notice measure the power with AC of the multimeter screwdriver cross power plug and socket will cause compressor and control 2 Check connection of power plug and socket if it s not good replace or screwdriver system couldn t
37. wer clapboard Deepfreeze fridge big drawer A For the application of this brochure to different models the characteristics of the refrigerator you are Y using may be different from the descriptions in this brochure ote DISASSEMBLY 1 Removing and replacing the right door of refrigerator compartment DUnscrew the upper right hinge cover by 2 Unscrew the upper right hinge by means of means of screwdriver and then remove hexagonal screwdriver and then remove the hinge the hinge cover Remove the door and place it in a proper 2 Remove the middle hinge if necessary position 2 Removing and replacing the left door of refrigerator compartment DUnscrew the upper left hinge cover by 2Unscrew the upper left hinge by means of means of screwdriver and then remove the hexagonal screwdriver and then remove the hinge cover hinge CONTROL AND DISPLAY SYSTEM The door body vision controlling screen just for PBFS21 PRFS25 series Button B Minute Button Lock Button D Time Area Function adjustment and control principle F L M N EISE FG H M N E Quick refrigerant button Deepfreeze fridge temperature adjusting button Has deepfreeze fridge temperature indicating area l Chill cold storage temperature indicating area I em chill
38. y 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 In case noise occurs from the compressor strike different locations on the side surface of its case using a rubber hammer or hand hammer with a wood block in between so as to determine whether the suspended springs are out of balance or being seized TROUBLESHOOTING Instruction of assembling Mullion on BM21 25 series 1 Install top axis of mullion through the heater 5 Fix the bottom cover on the mullion then fix the spring bottom axis foam airproof 2 Paste The blue wire is heater 115V and the heater the white wire is power oe wire 230V mullion the earth 6 Fix the top axis and top cover 4 Install the reinforce i metal and A foam on the HELL i bottom 7 the 5 screws Preinstall cover mullion is OK 25 Instruction of replacing Mullion heater on 21 25 series careful the distortion of clip will cause gap between the bottom cover and mullion 2 Disconnect the earth wire and connector 4 Remove the upper cover seal and bottom cover 2 After reassembly mullion run 5 10 minutes feel surface of the mullion If it s not warm check the connection and reconnect if 5 the screw fixing necessary earth wire 6 Tear o
Download Pdf Manuals
Related Search