SERVICE MANUAL
Contents
1. Insufficient cooling Check if the voltage of home Connect to power supply power supply is normal Adjust temperature settin If the thermostat grade or temperature Adjust temperature setting setting 1s reasonable If the opening door is frequently and the Decrease the frequency opening door ambient temperature is too high Guide user note that Don t put too much food into the YES freezer once and inner compartment should keep some Whether user has put much food in the freezer gap so that the air flow Hot food should be cooled prior to being stored Whether the freezer near heat source or there Guide user note that Don t put freezer near hot source or is cumulate goods around it sunshiny place Other objects around it should be maintained 10 20cm distance so that the air flows Cu Ors zari KOD Adjust or replace door sealing gasket between the door and cabinet Temperature rise 1s very small although Refrigerant leakage compressor running all along Test and repair Whether the volume of evaporator Refrigerant leakage or cooling system then frosting evenly normal cooling system blocked recharge refrigerant Whether the thermostat is normal Adjust or replace thermostat Check if compressor accessories and compressor 1s normal Change compressor accessories or Compressor SERVICE MANUAL TSV Rev Ref0911S006VO Model HRFZ 250DAA e 8 4 Nois2. Equipment or accessones lt 7 Product dimensions S Netweight Ko HRFZ 250DAA SERVICE MANUAL Issue 2012 4 9 Model HRFZ 250DAA 8 Packing dimensions Packing dimensions H W D mm 1473 575 605 Gross weight Kg 50 2 2 External views TS rel LL D Top Cover Wire Shelf Thermostat and Lamp assembly amp Door Switch cA Glass Shelves Crisper Cover Crisper fd Adjustable Front Feet 8 Door Balconies Gr Fridge Door Gasket i Freezer Door Function schedule 1 Application of low noise technology The compressor low noise technology is applied for integration of noise reduction and super freezing 2 Energy efficiency SERVICE MANUAL Issue 2012 4 9 Rev Ref0911S006VO Model HRFZ 250DAA e Thick heat insulation is used to minimize temperature gain and to optimize the cooling system for the most efficient cooling result 3 Crisper with adjustable moisture Moisture in the crisper can be adjusted for satisfaction of vegetables and fruit storage Chapter 3 Disassembly f the power when we demount and install the refrigerator 3 1 Thermostat disassembly Use the screwdriver to take down the screw on the control cover Take down the thermostat knob and remove the nut on the control cover 3 Take down the terminals on the thermostat SERVICE MANUAL Issue 2012 4 9 Rev R Model HRFZ 250DAA
3. Quick check 8 1 No cooling Whether the freezer can start NO Test according to the process of the freezer can not start p YES Whether the temperature knob on off position Exchange the thermostat NO For the normal operating current Check whether the working current of compressor is higher than 120 of the noise of compressor is loud normal operating current Check whether the working current of If compressor can run naturally and temperature compressor is lower than 80 of normal raising of condenser is very low operating current YES The working sound of compressor is small Cooling system or drier filter 1s blocked To evacuate and pour the cooling system and YES recharge refrigerant again YES If the temperature raising of condenser Refrigerant leak check and and drier filter is very low repair charge refrigerant again Both high pressure pipe and low pressure pipe temperature are same as the ambient temperature YES Compressor defect and change it SERVICE MANUAL u Rev Ref0911S006VO Model HRFZ 250DAA e 8 2 Compressor no start Compressor no working Check if the home power Connect the power is connecter Adjust thermostat setting position Check if thermostat is set Ambient temperature gt 225 C MIN NORMAL Grade at 0 Ambient temperature lt 25 C NORMAL MAX Grade Test if the thermostat is normal under power on status Method 1 Sett
4. 0 4 1 Adjust the adjustable feet 10 4 2 Adjus the thermostat ss session se 10 NASA ek ajs N N N IN 11 Chapter 5 TlOWCN rt ss o noise 12 5 1 Refrigeration flow chart 12 5 2 Refrigeration flow scenography aaa 13 Chapter 6 CIICUN araoraMmi o ais ne ces seen des naa ee 14 6 1 Brief principle diagram AAA mc 14 Chabpier IFOUDIESNOCUNG a ao 15 7 1 phenomena and solving eee aaa 15 1 2 COMPrT SSON p f li l ja aa sads sami 18 f 3 lermostat parameter s aca do os 18 Chapter 8 Quick CHECK resi sare S N a a rene 19 INO COO AR A S aan e EE E ce de 19 0 2 COM 8 eto 6 S I DD 20 6 3 FOOT COON RR S ES 22 GANO a i N I 23 SERVICE MANUAL Issue 2012 4 9 Rev Ref0911S006VO Model HRFZ 250DAA e Chapter 1 General Information 1 1 General Guidelines When servicing observe the original lead dress If a short circuit is found replace all parts which have been overheated or damaged by the short circuit After servicing see to it that all the protective devices such as insulation barriers insulation papers shields are properly installed After servicing make the following leakage current checks to prevent the customer from being exposed to shock hazards 1 Leakage Current Cold Check 2 Leakage Current Hot Check 3 Prevention of Electro Static Discharge ESD to Electrostatic Sensitive 1 2 Insurance Test 1 Check if there is any leak of current 2 Cut out the power supply before the
5. Haier SERVICE MANUAL Order NO Ref0911S006V0 Refrigerator MODEL HRFZ 250DAA A WARNING This service information is designed for experienced repair technicians 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 information by anyone else could result in serious injury or death 2012 HAIER ELECTRICAL APPLIANCES COR LTD All right reserved Unauthorized copying and distribution is a violation of law SERVICE MANUAL Haier Group Contents 2 Tape OPCE ONENIS en en GS I NOD DE O K N A 2 Chapter 1 General Information sies s d s 3 i ZBRKE al k EE oE E e E 3 iz WAS ANAC IESK odtok no tako edoid e ido 3 1 3 How to read this Service Manual kakaa aka aka aka kaaa kakaa kakaa 4 Chapter 2 Product Feature sasn anna dj 5 le SDECINCANONS O N ppm an ee 5 au EXENA MINS ni N N I V ee EJ IN 6 Chapter 3 BISASS NDIV as A S N I ES 7 3 1 Thermostat disassembly ccccccecceccseeceeceeeceeceecaeeseeseeseesuesaeeseesaeseuesensaeesass T 3 2 The door right left change 9 Chapter 4 Adjustments and maintenance 1
6. ef0911S006V0 4 Take down the thermostat We assemble it according to the reverse order Note connect the thermostat connection terminal must accord to the order of photo 4 SERVICE MANUAL Issue 2012 4 9 Rev Ref0911 Model HRFZ 250DAA ef0911S006V0 3 2 The door right left change Reversing the door Before you reverse the refrigerator doors you should ensure the refrigerator is unplugged and empty It is recommended to use a crosshead screwdriver and a spanner both not supplied Remove the two screws on the rear of top cover Remove the three screws and the top hinge then then remove the top cover remove the upper door Support the lower door and remove the central hinge by removing the two screws Remove the lower door from the lower hinge pin Tilt the fridge backwards and rest it on a firm Surface f _ Ear 1 is m d Remove the lower hinge by removing the screws Refit the adjustable foot from left to right side Remove the lower hinge pin using a spanner Turn the hinge over and replace the hinge pin in the same hole Replace the lower hinge on the other side and then stand the fridge upright SERVICE MANUAL Chapter 4 Adjustments and maintenance 4 1 Adjust the adjustable feet 4 2 Adjus the thermostat Our fridge freezer temperature is controlled by means of an adjustable thermostat located at the right hand side wall of the refrigerator compartment The the
7. g to different compressor model SERVICE MANUAL Model HRFZ 250DAA Chapter 7 Trouble shooting 7 1 phenomena and solving Compressor cant started be Compressor starts freguently too 1 The fuse is broken 2 Cable broken The contact of plug socket and cable is broken 3 The voltage is too low and lower than the rated voltage 220V The voltage is between 187V and 242V 4 The knob of the thermostat is at MIN position When ambient temperature is higher than 30 degree centigrade set the knob to 1 3 position When ambient temperature is between 16 30 degree centigrade set the knob to the 3 5 position and when it is lower than 16 degree centigrade set the knob to the 5 7 position 5 The thermostat is out of order 6 The start relay or thermal protection is out of order or broken 7 The wire of motor starting coil or operation coil is broken 1 The distance between protection and the heater is too close 2 The door gasket does not seal enough or the cabinet heat insulation is not good 3 The condenser heat dissipation effects is poor and lead to the compressor work overloaded 4 The setting of the thermostat knob is too low Issue 2012 4 9 Ref0911S006V0 1 Check if there is short circuit and solve it if not change capable fuse 2 Check and contact normally or else change damaged part 3 Use until the voltage rise
8. ing thermostat to coldest position 5 grade observe if the machine can be started If compressor still not start it means that the thermostat maybe failure Check if the thermostat 1s normal Method 2 Turn on the fast freeze switch and check if the compressor could start if it can start means the thermostat defective please exchange it and if it can not start it need to be next step check PTC Test if resistance of PTC starter is 6 8 20 20 If so it means it is normal and if it is ZERO or INFINITE means the starter is out of work For PTC starter when shake it it Check if the starter is should not have noise if it has means the starter Magnetic Disk burned normal Reverse180 of hammer type starter and if it does not conduct contact junction carbonized and check the coil burn YES 1 Measure whether two ends of overload protector is through usin Check if the overload p 9 g m 19 multi meter Ohm grade Not thorough means protector is defective protector is normal 2 Measure starting current and running current of compressor using Compressor clamp type tester If overload protector act when current is normal accessories means protector failure and should be replaced failure Before measurement remove the capacitor from circuit firstly and Check if the run capacitor is then connect two terminals for discharge normal 1 IF the finger of multimeter swings to O quickly and then swings back slow
9. is model the standard Refrigerant charge is R600a 41g Check the thermostat if the contact space is not right please adjust the thermostat high speed screw and if control contact is loose and press it tightly if it is no effect please change the thermostat Clean the condenser for this model the condenser is in the cabinet so should clean the dust on both side of the cabinet Check and repair the cabinet or the door gasket check if the door gasket flashed and repair it SERVICE MANUAL Model HRFZ 250DAA There is noise when the compressor running There is no frost on evaporator The thermostat is out of order No frosting No cooling 1 The fridge body is not stable and in level 2 When the compressor is running there is friction in tube and fridge that lead to syntony 3 Compressor fixed screw is too loose 4 The damping washer fixed too tight or loose or ageing 1 The refrigerant leakage 2 There is ice block or dirty block in the capillary or the system 1 The internal temperature feeling medium of the thermostat leakage 2 The temperature parameter drift 1 The door gasket flashed and lead to the cold air out of the fridge 2 The knob of thermostat is set too high 1 The refrigerant leakage 2 The knob of thermostat is set too low Issue 2012 4 9 Ref0911S006V0 1 Make the refrigerator stable adjust the feet 2 Move the tube and avoid the friction the di
10. lf noise damper glue SERVICE MANUAL 2012 4 9 V Ref0911S006V0 Model HRFZ 250DAA Sincere forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com
11. ly when measuring two poles of capacitor it means the run Compressor capacitor is normal accessories 2 Ifthe finger of multimeter does not swing it means the run failure capacitor is open circuit If the finger of mlimeter swings to 0 and stops means it is short circuit if it stops on any other position it means the capacitor leakage SERVICE MANUAL Issue 2012 4 9 Rev R 11 Model HRFZ 250DAA ef0911S006V0 Check if each connector of starter overload protector run capacitor are in good condition YES Check if the compressor normal YES Check if the starting current of compressor excess too much Check each connectors of the starter overload Compressor NOT NORMA protector and run capacitor ensure each contact is in accessories good condition then power on and retest the failure machine Test the resistance parameter of the compressor if it is ZERO inner winding is short circuit if it is infinite inner winding 1s break circuit If all technical parameter of compressor and compressor accessories starter overload protector are normal after above test but compressor still can not be started and overload protector action the actual starting current excess too much This phenomenon usually caused by compressor inner mechanical failure cylinder block or axis hung problem SERVICE MANUAL Issue 2012 4 9 Model HRFZ 250DAA Ref0911S006V0 8 3 Poor cooling
12. repair to avoid an electrical shock hazard 3 Inthe case of a live line test insulating gloves should be worn to avoid potential electrical shock 4 Confirm the rated current voltage and capacity before testing with any kinds of instruments 5 Watch if the upper door is open when we 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 8 If there is a breakdown with the refrigeration system please surrender the machine to the service center else the leaked refrigerant may pollute the atmosphere 9 The refrigerator use AC of 220 240V with a frequency of 50Hz 10 A big fluctuation of voltage exceed the range 187 242V may cause a start failure of the refrigerator a burn out of the control panel and compressor or an abnormal sound from the compressor in operation 11 Take care not to damage the supply line Don t yank at the line pull the plug out gently from the SERVICE MANUAL Issue 2012 4 9 Rev Ref0911S006VO Model HRFZ 250DAA e receptacle Dont press the line under the cabinet or step on it Take care not to roll on or damage the supply line when moves the machine from the wall 12 In the case of leakage of inflammable gases like carbon monoxide open the door and windows Don t pull ou
13. rmostat may be positioned anywhere between 1 and 7 With 7 being coldest and 1 means turn off the fridge And generally we turn the position at 3 5 SERVICE MANUAL Model HRFZ 250DAA 4 3 Maintenance 1 Wash the shelf with tap water 2 Scrub away the dirty with soft cloth SERVICE MANUAL Model HRFZ 250DAA Chapter 5 Flow chart 5 1 Refrigeration flow chart 1 Compressor 2 Condenser 3 Heating tube 4 Condenser 5 Drier filter 6 Capillary tube 7 Evaporator Brief Description of System Flow Chart HRFZ 250DAA is a direct cooling single system refrigerator a mechanical type of control is generally adopted When the refrigerator is powered on and the refrigerant flows in the sequence 1 gt 2 gt 3 gt 4 gt 5 gt 6 gt SERVICE MANUAL Rev Model HRFZ 250DAA ef0911S006V0 5 2 Refrigeration flow scenography Transition tube Evaperator Accumulator Dew removal tube Gas return tube Left condenser Evaperator Right condenser Drier filiter Process tube Compressor SERVICE MANUAL Chapter 6 Circuit diagram 6 1 Brief principle diagram H 6 WL LG O 1C 4 r WH IP SS l GY D PI BN aa Fee YE GN NTERIOR MOTOR LAMP PROTECTOR PLUC STARTER L DOOR SW mi Z Tal N 0 YE GN YE GN COMPRESSOR Dee a a a m The capacitor is optional accordin
14. stance between tube and tube evaporating dish and side cabinet is more than 1cm 3 Fasten the screw 4 Adjust the fixed angle or change the damping washer 1 Check and find the leakage point let out the refrigerant then meld it and vacuumed and fill the refrigerant again 2 Clean the system with blowing nitrogen change the capillary and vacuum and fill the refrigerant again Change the thermostat 1 Use the blower to repair the door gasket The distance between the blower air out and the door gasket is more than 20cm Do not touch the door gasket with our hand And when blowing the door gasket pat the door lightly with our hands 2 Change the thermostat the method as up saying 1 Check and make sure whether there is leakage and find the leakage point let out the refrigerant then meld it and vacuumed and fill the refrigerant again 2 Adjust the thermostat SERVICE MANUAL 2012 4 9 Ref0911S006V0 Issue Rev Model HRFZ 250DAA 7 2 Compressor parameter Ambient temperature 25 C model Compressor Pew aP215 JPT 15 Max working Starter voltage 350 V M current hice k protector temperature nee 61 9 9 C temperature R CCC a capacity 7 3 Termostat parameter Technology parameter Model Cold point Middle point Capillary length f r WPF31S 102 m pa m pa 011WX C SERVICE MANUAL Issue 2012 4 9 Rev R Model HRFZ 250DAA ef0911S006V0 Chapter 8
15. t or insert the plugs of the appliance 13 Dont touch the refrigeration surface of the freezing compartment when the refrigerator is in operation especially when our hand is wet else we may be glued to the surface 14 Pull out the plug of power supply during clearance or power outage Wait at least five minutes to resume the power supply in order to prevent damage to the compressor caused by continuous restart i 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 the products in some way 1 3 How to read this Service Manual 1 3 1 Using Icons Icons are used to attract the attention to specific information The meaning of each icon is described in the table below voe BB A note provides information that is not indispensable Caution A caution is used when there is danger that the reader through incorrect manipulation may damage equipment loose data get an unexpected result or has to restart part of a procedure Warning A warning is used when there is danger of personal injury Reference LL A reference guides to find additional information on a specific topic SERVICE MANUAL Issue 2012 4 9 Rev R 11 Model HRFZ 250DAA ef0911S006V0 Chapter 2 Product Feature 2 1 Specifications 1 Model S 2 capaoty J _3 Features o a Technica OOS O Aesthetics fF a ____ e
16. to the rated voltage or attach the voltage stabilizer 4 Set the knob of the thermostat to the suitable position 5 Change the thermostat 6 Change the start relay or the thermal protection 7 Measure using Rx1 position of meter if the wire is short circuit changes the compressor Adjust the overload adjustable screw and increase their distance Check and repair the cabinet or the door gasket check if the door gasket flashed and repair it Clean the condenser for this model the condenser is in the cabinet so we should clean the dust on both side of the cabinet Set the knob of the thermostat SERVICE MANUAL Model HRFZ 250DAA Compressor runs without stopping The refrigerant leakage or insufficient The refrigerant is superfluous The thermostat is not work The condenser heat dissipation effect is poor for the dust The refrigerator insulation layer is destroyed and the door gasket sealing is bad Issue 2012 4 9 Ref0911S006V0 to the suitable position When ambient temperature is higher than 30 degree centigrade set the knob to 1 3 position When ambient temperature is between 16 30 degree centigrade set the knob to the 3 5 position and when it lower than 16degree centigrade set the knob to the 5 7 position Check and find the leakage point let out the refrigerant then meld it and vacuumed and fill the refrigerant again Let out the suitable refrigerant For th
17. y Noisy Exterior factor and solution measure Whether has _ exterior 1 The adjustable foot is not level Explained the ground is uneven user can use spanner adjust refrigerator food locates the freezer in the horizontal position YES 2 The freezer and other goods bump or near to the Adjust appliance and influence factor explain to user wall The user may move the goods which bumps or adjust the distance between freezer and wall 10 20cm NO YES Whether the sound is normal Explain to user NO Noise tvpe Compressor noise Cooling system noise Is there collision between YES Adjust distance Wind blow Rumble Refrigerant Relay sound Compressor compressor pipe compressor i p PIP P to more than sound sound eruption 5mm support bracket drain pipes sound starter noise YES YES YES Whether the Is the NO pipeline rumble The capillary tube is not Replace smooth or starter does sound big resonate Whether the compressor YES Adjust and fix bolts or fixing clip has burr fixing clips or bolts are loose Is the freezing evaporator is NO Add shock damper glue YES fixed tightly or fix the evaporator Whether the damper block of yes Replace rubber tightly compressor is disabled or no damper cushion YES flexibility NO o Refilling Whether terminal box is Adjust and fix fixed tightly YES Adjust pipeline or add shock Compressor se
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