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SERVICE MANUAL

Model: HB21FSSAA, HB21FG*

28

Issue 2010-12

Rev.

Ref1012S008V0

Chapter 6 Cooling System Principle

6-1.Cooling system flow scenograph

6-2.Cooling system flow chart

(1) Compressor
(2) Connector pipe
(3) Condenser
(4) Anti-dew tube
(5) Drier filter
(6) Capillary
(7) Evaporator
(8) Suction pipe
(9) Connector pipe
(10) Condenser cooling fan
(11) Freezing fan
(12) Defrost heater

(1) Compressor
(2) Condenser
(3) Drier filter
(4) Capillary
(5) Evaporator
(6) Freezing fan

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Summary of Contents for HB21FGBAA

Page 1: ...enced repair technicians only and is not designed for use by the general public It does 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 ser...

Page 2: ...isassemble the air duct of fridge chamber 11 3 3 Disassemble the fridge door 12 3 3 1 Disassemble the fridge door 12 3 3 2 Disassemble the automatic door closers of fridge door 13 3 4 Disassemble the freezing door 13 3 5 Disassemble the display panel of left fridge door 17 3 6 Assemble the handle 18 3 7 Defrosting system disassembly and inspection 18 4 Control and Display System 22 4 1 Control and...

Page 3: ...Overview 26 5 2 Fridge electric air damper control 26 5 3 Fan control 26 5 4 Vertical girder hater control 27 5 5 Defrost control 27 6 Cooling System Principle 28 6 1 Cooling system flow scenograph 28 6 2 Cooling system flow chart 28 7 Circuit Diagram 29 7 1 Main control PCB diagram diagram 29 7 2 Brief principle diagram 30 8 Sensor Error Code and Self test Function 31 8 1 Sensor position 31 8 2 E...

Page 4: ... 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 220V with a frequency of 50 60Hz 10 A big fluctuation of voltage exceed the range 187 242V ...

Page 5: ...vice Manual 1 3 1 Using Icons The meaning of each icon is described in the table below Note A note provides information that is not indispensable Caution A caution is used when there is danger 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 A ref...

Page 6: ...L 149L 149L Freezing capacity 10kg 10kg 10kg 10kg Energy consumption year 432kWh 432kWh 432kWh 432kWh Max storage time at breakdown Freezer 720Min 720Min 720Min 720Min Defrosting M manual A automatic A A A A Frost free system yes yes yes yes Defrost water outlet yes yes yes yes Air circulating ventilator yes yes yes yes Kind of coolant R134a R600a R600a 75g R600a 75g R600a 75g R600a 75g 3 Technica...

Page 7: ...g green t t t t Crisper Chiller Meat salad crisper transparent white Chiller t Chiller t Chiller t Chiller t Vegetable crisper s transparent white t t t t 5 Equipment accessories Control panel Interior exterior Exterior Exterior Exterior Exterior Thermometer interior exterior Interior Interior Interior Interior Display type LCD LCD LCD LCD Control lamps green yellow white W W W W Over temperature ...

Page 8: ...gerator can be automatically adjusted to the best refrigerating condition according to the chamber temperature and ambient temperature without human intervention 4 Super large and super luxurious design The refrigerator has super large capacity super large refrigerating and freezing chamber as well as super luxurious inter design 5 Fluoride free frostless complete air cooling refrigeration deep co...

Page 9: ...SERVICE MANUAL Model HB21FSSAA HB21FG 9 Issue 2010 12 Rev Ref1012S008V0 2 3 External views ...

Page 10: ...p lamp cover 2 Remove the top lamp cover 3 Disconnect the connecting terminal then remove the four fixing crews of lamp panel 4 During installation carry out the operation in the reverse order B Replace the back lamp of fridge chamber 1 Remove the top lamp cover firstly then remove the back lamp cover back light cover is mounted on the back by clip hook structure 2 Remove the lamp panels There are...

Page 11: ...ps 2 Remove the four fixing screws of lamp panel support then remove the lamp panel support 3 After the top lamp panel support is removed Detach two screws fixing back air duct of fridge chamber 4 Pull out the air duct assembly of fridge chamber 5 Disconnect the lower wire terminals of the air duct then detach the fridge air duct 6 During installation carry out the operation in the reverse order ...

Page 12: ...e operated in the reverse order 1 Remove the fixing screws of upper hinge cover then remove the upper hinge cover 2 Disconnect cable connectors a b and humidity sensor terminal c 3 Detach the fixing screws for upper hinge 4 Detach the U type fixing part for upper hinge 5 Open the fridge door to 90 angle now the door is vertical to the cabinet then pull the door out in the arrow direction 6 When th...

Page 13: ... horizontally on the protective pad 8 Take off the anti friction ring the white ring in following picture 9 Please note to put all parts in order and ensure not lost any part especially the white anti friction ring 3 3 2 Disassemble the automatic door closers of fridge door 1 Take off fridge door according to above operation steps take down bottle holders and upper hinge from then fridge door then...

Page 14: ...Keep the flat surface of shaft green line in vertical direction with the red line shown in the following picture The fridge door will can t be reinstall in right position if not comply with any one of above operation requirement 3 Put the fridge door horizontally slightly in order to prevent damaging the automatic door closer which under the bottom of door 4 When install the fridge door to middle ...

Page 15: ...the door in 90 angle with the cabinet The door the anti friction ring and middle hinge are not fitted rightly there is gap between them that cause the door is not installed in position wholly 5 After finishing door installation check the following items a Power on the refrigerator it can be start b Can open and close fridge door smoothly c Check if the left fridge door and the right fridge door ar...

Page 16: ...ter above adjustment check again to ensure door can be opened and closed normally 3 4 Disassemble the freezing door Take the operation of big freezing drawer door for example Disassemble the small freezing door can refer to the following similar operation 1 Pull out the big freezing drawer door lift the plastic drawer front part gently a meanwhile passes forward the plastic drawer b makes an effor...

Page 17: ...idge door Operation for HB21FSAA Use sucker to suck the display board at location 1 and 2 to remove it from fridge door Operation for HB21FGRAA HB21FGBAA HB21FGWAA 1 Use screwdriver to detach the screws at location 1 and 2 Then remove the cover 3 2 Use screwdriver to detach the screws at location 4 and 5 3 Pull out the panel bracket 6 upward then can take down the display panel 4 During installati...

Page 18: ...se steps 2 Assemble the freezing door handle Firstly insert the handle connectors into the hole of freezing door Fig 3 Then take out the freezing handle align the hole of handle head to the connector install the handle to the connector Use inner hexagon to fix the side fixing screws on the handle head tightly Fig 4 The handle can be dismantled by reverse steps Fig 3 Fig 4 3 7 Defrosting system dis...

Page 19: ...d defrost heater sensor and fuse after take down the cover of freezer air passage STEP 2 Disconnect the 2 connectors of heater A B and connector C of defrost sensor STEP 3 Test the resistance of connector A and B the normal value is 194Ω if the heater if failed please change a new one ...

Page 20: ...p the evaporator to take the fixing clips out Attention Don t break the pipes of evaporator and avoid being hurt by evaporator Disconnect fixing clips to take down the defrost heater STEP 5 After changing new heater fix the heater onto evaporator by clips then fix evaporator onto cabinet ...

Page 21: ...ly the fixing clip of defrost sensor then push the sensor according to the marked direction to take down the sensor Cut the fixing clip of fuse and check whether the fuse is well if it is failed please change a new one STEP 7 After examination first connect the fan connector then push the cover of air passage to fix it well ...

Page 22: ...till in blinking press down the Function Confirmation Button B the Holiday Icon will be off and the Holiday function is exited Caution 1 Before activating the Holiday function should empty the refrigerating chamber to avoid food spoilage 2 In the Holiday status fuzzy and super cooling the refrigerating temperature control is not available 4 3 Fuzzy function In Fuzzy status refrigerator will adjust...

Page 23: ...od inside the freezing chamber it will completely freeze the food in a short time In the unlocked status press Function Select Button A select the Super Freezing function at this time the Super Freezing Icon K is blinking press down the Function Confirmation Button B the Super Freezing icon K displays and enter the Super Freezing function If you want to exit the Super Freezing function press the F...

Page 24: ...e unlocked status press Fridge Temperature Control Button D the original freezing chamber setting temperature start to blink Enter fridge chamber temperature setting status since then for each single press of this button the fridge chamber setting temperature is displayed in cyclic form by 09 08 07 06 05 04 03 02 01 if no button pressing operation is initialed over 5 seconds the blinking will stop...

Page 25: ...e power outage Caution The Lock function is not memorable The refrigerator is at unlocked status after power recovery 4 12 Demo mode Under locked status press the function confirmation button OK B and freezer temperature control button FRZ TEMP C at the same time for 3 seconds to active demo mode Demo mode can be used for demonstrating refrigerator in market or showroom Under demo mode compressor ...

Page 26: ...g to fixed cycle ON 10 minutes then OFF 15 minutes Operation can be used in check air damper Press refrigerator temperature setting button for 3 seconds under lock status then the fridge room is closed and temperature and setting display board go out fridge air damper is closed 5 3 Fan control Control principal of the freezer fan motor 1 When a fridge food door is opened the freezer fan motor will...

Page 27: ... vertical girder heater work 25 seconds per minute 5 5 Defrost control The refrigerator control the defrost start based on different compressor accumulated working time and door open times When the defrost sensor reaches 7ºC refrigerator stop defrost If the defrost heater working time has reach 120 minutes but defrost sensor failing to reach 7 refrigerator will stop defrost and error code ED will ...

Page 28: ...system flow scenograph 6 2 Cooling system flow chart 1 Compressor 2 Connector pipe 3 Condenser 4 Anti dew tube 5 Drier filter 6 Capillary 7 Evaporator 8 Suction pipe 9 Connector pipe 10 Condenser cooling fan 11 Freezing fan 12 Defrost heater 1 Compressor 2 Condenser 3 Drier filter 4 Capillary 5 Evaporator 6 Freezing fan ...

Page 29: ...SERV Model Chapt 7 1 Ma RVICE M HB21FSSA ter 7 C ain contro MANU AA HB21F Circuit D ol PCB d UAL FG Diagram diagram m Is R ssue 2010 1 Rev Ref1012 12 2S008V0 29 ...

Page 30: ...p switch 1 SW2 Fridge lamp switch 2 SW3 Freezer lamp switch 1 SW4 Freezer lamp switch 2 SNR1 Fridge sensor SNR2 Freezer sensor SNR3 Defrost sensor SNR4 Ambient sensor SNR5 Humidity sensor L1 Fridge lamp 1 L2 Fridge lamp 2 L3 Fridge lamp 3 L4 Freezer lamp 1 L5 Freezer lamp 2 F Inverter board G Compressor I Fuse 1 J Control board K Fuse 2 H1 Vertical girder heater H2 Defrost heater ...

Page 31: ...idge sensor failure F3 R SNR short circuit or open circuit 3 F SNR Freezer sensor failure F4 F SNR short circuit or open circuit 4 D SNR Defrost sensor failure F6 D SNR short circuit or open circuit 5 H SNR Humidity sensor failure Eh H SNR short circuit or open circuit 6 Poor communication E0 2 minute communication disconnection 7 Freezing fan E1 Freezing fan is unavailable 8 Cooling fan E2 Coolin...

Page 32: ...ain to exit the error code display 8 4 Self test function 1 Under LOCK status finish the following operation within 5 seconds press four keys one by one Function A REF TEMP D OK B FRZ TEMP C and then press key Function A to enter Test1 mode the products will enter compulsive starting mode 2 Press key Function A under Test1 mode for 3 seconds to enter Test2 mode then the product will enter forced d...

Page 33: ...3 defrost heater start working 4 vertical girder heater shutdown 5 air damper and it s heater shutdown 6 freezer refrigerator setting display T2 T2 at display board When temperature around defrost sensor above 7 degree appliance will exit Forced defrosting model TEST3 For testing assistant heater Press key Function A under Test2 mode for 3 seconds to enter Test3 mode then the product will enter as...

Page 34: ...ition The fridge storage compartment does not work The air door cable is not connected properly The fan does not work The fridge storage compartment is turned off Check if the air door cable is not connected properly and install it correctly if not so Verify that the air door acts normally with the Fridge ON OFF key on the display panel The fan does not work while the refrigeration air door is ope...

Page 35: ...kes 24 hours for the temperature of the refrigerator to become stable The temperature in the fridge storage compartment is too high while the temperature in the freezer storage compartment is OK The temperature is set too high Set the fridge temperature lower It takes 24 hours for the temperature of the refrigerator to become stable Bad odors in the refrigerator The inside of the refrigerator is d...

Page 36: ...Sincere forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com ...

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