Haier BD-429GAA Service Manual Download Page 12 | Manualshive

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SERVICE MANUAL

Model: BD-429GAA

12

Issue 2009-03-09

Rev.

Ref0903S021V0

Chapter 6 System flow principle

6-1. Refrigeration flow chart

The refrigeration system of direct cooling single-system cooler belongs to the category

of a single-temperature and single-control refrigerating system with one evaporators and is

controlled by a single temperature control.

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Summary of Contents for BD-429GAA

Page 1: ...chnicians 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 informatio...

Page 2: ...g and draining 7 3 3 Cleaning your freezer 8 4 Disassembly 9 4 1 Door assembly Door hinge hinge cover 9 4 2 Compartment Grill assembly 9 4 3 Control panel assembly Panel cover board knob indicator light 10 4 4 Thermostat assembly 10 5 Control and display system 11 5 1 Control and display panel 11 5 2 Starting the Freezer 11 6 System flow principle 12 6 1 Refrigeration flow chart 12 6 2 Refrigerati...

Page 3: ... 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 you 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 ...

Page 4: ... caused by continuous restart 1 2 2 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 your products in some way 1 3 How to read this Service 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 but may nevertheless be val...

Page 5: ...zer star rating 2 Key features Gross capacity l 435 Total net capacity l 429 Freezing capacity kg 24h kg 24h 28 Energy consumption year kWh year 333 Max storage time at breakdown h 35 Defrosting Manual Automatic Manual Kind of coolant R134a R600a R600a Foaming components R141b C P C P 3 Technical data Voltage frequency V Hz 220 240 50 Input power currency W A 200 2 0 Length of cable incl plug cm 1...

Page 6: ...d Aluminum Insulation Lid thickness cm 7 8 Walls thickness cm 7 Baskets number n 2 metal Defrost drain Interior light Adjustable thermostat Fast freeze lamp yellow On light green Breakdown light red Fast freeze switch 6 Product net dimensions Unit dimensions H W D cm 85 5 141 74 5 Net weight kg 67 7 Packing dimensions load ability Packing dimensions H W D cm 89 5 147 77 5 Gross weight kg 76 40 Hig...

Page 7: ...efficiently do not permit more than 1 2 13 mm of frost to accumulate on the shelves To remove frost scrape with a plastic or wood spatula or scraper Do not use an ice pick or sharp edged instrument as it may damage or scratch the freezer Do not use any electrical device in defrosting your freezer For Complete Defrosting 1 Turn the temperature control to the OFF position and unplug the freezer 2 Re...

Page 8: ...h wax or mild liquid dishwashing detergent Dry and polish with a clean soft cloth Do not wipe the freezer with a soiled dishwashing cloth or wet towel Do not use scouring pads powdered cleaners bleach or cleaners containing bleach Inside Clean the inside of your freezer at least once a year We recommend that the freezer be unplugged before cleaning If this is not practical wring excess moisture ou...

Page 9: ...oor assembly Door hinge hinge cover Disassemble the hinge assembly and the hinge cover the hinge cover take away the cover then screw off the eight screws on the bottom hinge so the whole hinge could be moved 4 2 Compartment Grill assembly Unscrew the two screw of grill we can take away the grill ...

Page 10: ... pull panel outside then take away it Take away the knob with a sharp edged tool Press the cover board and take away it Press two claws on indicator light side and push it from back to front 4 4 Thermostat assembly First take off the knob refer 4 3 Use turnbuckle spanner or acutilingual plier unscrew the turnbuckle then thermostat can be moved from back of panel Note When assembly thermostat you s...

Page 11: ... colder or warmer temperatures adjust the control one step at a time Allow several hours after each one step adjustment for the freezer temperature to stabilize 5 2 Starting the Freezer 1 Clean the inside of the freezer with a mild solution of baking soda and water 2 Connect cord to power outlet 3 Make sure the temperature control is set at 4 4 Allow freezer to operate for at least four hours befo...

Page 12: ...r 6 System flow principle 6 1 Refrigeration flow chart The refrigeration system of direct cooling single system cooler belongs to the category of a single temperature and single control refrigerating system with one evaporators and is controlled by a single temperature control ...

Page 13: ...SERVICE MANUAL Model BD 429GAA 13 Issue 2009 03 09 Rev Ref0903S021V0 6 2 Refrigeration flow scenograph Chapter 7 Circuit diagram 7 1 Brief principle diagram ...

Page 14: ... door lid openings Temperature control set too cold See About the operation of your freezer Inadequate air circulation space around cabinet See Preparing to install the freezer Fast Freeze switch is in the ON position on some models See About the operation of your freezer Noisy operation or cabinet vibrates Floor may be weak causing freezer to vibrate when compressor is on Placing 2 X 4s 51 mm X 1...

Page 15: ...er Moisture forms on outside of cabinet Not unusual during periods of high humidity Wipe surface Interior light does not work on some models No power at outlet Replace fuse or reset the breaker Freezer is unplugged Push the plug completely into the outlet Light bulb burned out Replace bulb Door lid wont fully close by itself Package holding door lid open Slow starting time after being off Built in...

Page 16: ...da glass is broken or there are conductive materials such as water dirt etc adhered to terminals If electricity leakage occurs outside the compressor please use tetra chloromethane or alcohol to clean it If the leakage occurs in the inner of compressor it needs to be changed 3 3 Leakage of temperature controller Because of too long a period of service or too high temperature or too much dirt or to...

Page 17: ... is similar to room temperature Its temperature is relative to environment temperature The temperature in winter is low and the condenser s temperature is low too and only a small part is warm In summer the temperature is high and the temperature of condenser cover is high too and the whole condenser is warm 2 2 The temperature of high pressure exhaust pipe is high when touching with your hand in ...

Page 18: ...iation of condenser and refrigeration ability will be reduced 3 3 Check if there is too much drink stored in the cabinet Too full of drink is not good for cold air circulation 4 4 Check if the cabinet door has been closed well If the door seal bar is too dirty and the door cannot be sealed well remove dirt and put on a little talcum powder 5 5 Frequent opening and extended opening of cabinet door ...

Page 19: ... rises to rated value or attach a stabilizer 4 4 Rotate the knob to wanted position for suitable temperature 5 5 Change the controller 6 6 Change starting relay or thermal protection unit 7 7 Measure using R 1 position of avometer if there is wire broken change compressor 8 8 Change compressor 9 9 Change compressor Compressor starts too frequent operation time too long but temperature drop in cabi...

Page 20: ...ked please change After short time of operation over load protection unit cuts off 1 1 The voltage is too high 2 2 Over load protection unit is not good it jumps earlier 3 3 Starter contacting point is adhered 4 4 There is short circuit in compressor 5 5 There is mechanical problem in the compressor 6 6 Temperature around compressor is too high 1 1 Supplement a stabilizer and adjust its value to r...

Page 21: ...or 3 3 Check carefully step by step if insulation is seriously damaged please change remove wet parts and put them into drying box to make them dry Electricity leakage of temperature controller 1 1 The service time is too long 2 2 The environment is too dirty 3 3 Humidity is too high 1 1 Change temperature controller 2 2 Use brush to remove dust 3 3 Make the temperature dry and control the environ...

Page 22: ...8 2 11 Operation of cabinet is not normal Cabinet starts when power is switched on but after a few seconds or 1 2 minutes it stops automatically and will start again in several minutes It stops again within a very short time period after starting If it runs like this Continuity and cannot work normally there are several reasons for this matter 1 1 Big fluctuation of voltage The voltage required fo...

Page 23: ...ral minutes later it starts again and stops automatically again With in cycles like this and the motor or starter and thermal protection unit will burn up after a long time The main reason is the motor coil is shorted at some parts Second the cabinet operates a certain time after starting but it will stop automatically before the temperature reduces before the desired temperature is reached After ...

Page 24: ...SERVICE MANUAL Model BD 429GAA 24 Issue 2009 03 09 Rev Ref0903S021V0 8 2 12 Poor cooling ...

Page 25: ...ntact is good Whether input and output voltage of main control board is normal Whether each contact of main control board is normal Tighten each contact and test machine again Y Trouble of lighting and display system Adjust the grade according to fact Compressor is open circuit or short circuit Inner trouble of compressor If it is infinite or 0 then the starter is out of work Heat protector is out...

Page 26: ...SERVICE MANUAL Model BD 429GAA 26 Issue 2009 03 09 Rev Ref0903S021V0 Sincere forever Haier Group Haier Industrial Park No 1 Haier Road 266101 Qingdao China http www haier com ...

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