Haier HR-176A Service Manual
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Haier HR-176A Service Manual

Haier HR-176A Service Manual

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Refrigerator
SERVICE MANUAL
Features:
1.Optimized condensing system.
2.Direct cooling single-system refrigerator.
.
CAUTION
READ THIS MANUAL CAREFULLY TO
DIAGNOSE TROUBLE CORRECTLY
BEFORE OFFERING SERVICE .
MODEL: HR-176A
Haier Group

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Summary of Contents for Haier HR-176A

  • Page 1 CAUTION READ THIS MANUAL CAREFULLY TO DIAGNOSE TROUBLE CORRECTLY BEFORE OFFERING SERVICE . Refrigerator SERVICE MANUAL MODEL: HR-176A Features: 1.Optimized condensing system. 2.Direct cooling single-system refrigerator. Haier Group...

  • Page 2: Part1.Specifications

    Part1.Specifications Product identification photo Family type Europe style Type of appliance = free standing, BI = built-in) Supplier own brand Haier Suppliers bar code Basic features Energy efficiency class Climate class (SN=10~32°C, SN/N/ST N=16~32°C, ST=18~38°C, T=18~43°C) Freezer compartment star rating...
  • Page 3 Defrosting Fridge / Freezer (M=manual A=automatic) Control system (E = Electronic / M = Mechanical) Fuzzy logic FROST 　 (Fridge/Freezer) Ventilated (Fridge only) Antibacteria system Control panel External control display Temperature range (from>to) °C 0°C ~10°C Super Cooling (Fridge) Super Freezing 　...
  • Page 4 adjustable) Type (gr=grill / g=glass / p=plastic) Colour (w=white /t=transparent.) Bottle holder / bottle(s) Chiller compartment / drawer Crisper(s): Number / colour = transparent, w = white Shelf (on salad crisper) (g=glass / p=plastic) Door: Storage rack(s) (Total) Butter cheese compartment Type of rack(s) g=glass...
  • Page 5 eggs Adjustable feet (front / rear) n° / n° 2 / 0 Castors n° / n° 0 / 0 (front / rear) Wall spacer grid or distance holder Flush back Length of cable/inch. plug Packing dimensions & loadability Packing dimensions (H / W / 525*579*865 Gross weight...

  • Page 6: Part2.Refrigerating Principle

    Part2.Refrigerating Principle 2.1 Schematic Diagram of Refrigerating Principle 2.2 Brief Description of System Flow Chart HR-153A/176A series is a direct cooling single-system refrigerator which has a freezer compartment. When the refrigerator is just powered on, the refrigerant flows in the sequence: 1->2->3->4->5.

  • Page 7: Part4.Maintenance Service And Trouble Shooting

    Part4.Maintenance Service and Trouble Shooting 4.1 When the refrigerator does not get cold at all No cooling If compressor Check and repair according to can run after it stop to the section of "the compessor run five minutes and doesn't work". give power.
  • Page 8 4.2 The refrigerator is not sufficiently cold Com pressor doesn’ t start W hether lighting and display system is Trouble of lighting and display system normal W hether the grade of therm ostat is Adjust the grade according to fact on 0 W hether the Compressor is open circuit or short...

  • Page 9: Normal Phenomena-Not Troubles For Refrigerators

    4.3. Normal Phenomena—Not Troubles for Refrigerators In a domestic refrigerator, there is not only a complicated electric control system, but also a refrigerating system that is difficult to discern whether it is in a good working condition. Both the systems are related and affect each other. If a certain part of a refrigerator works abnormally .Its refrigerating efficiency will decrease ,operation properties will become unstable ,or even it cannot be used normally for those serious cases.

  • Page 10: Common Troubles In Refrigerators And Their Remedies

    4.4. Common Troubles in Refrigerators and Their Remedies Causes for troubles occurring in refrigerators are closely related to the quality of components and workmanship in assembling by manufacturers as whether refrigerators are properly used and maintained .The parameters generally used to express the working conditions of a refrigerator include the temperature inside the refrigerator ,operation rate ,electric power consumption ,noise level ,and other functional indexes .If any one of these parameters is beyond its permissible range ,this indicates that there is a fault or...
  • Page 11 compressor ,a slight and uniform hum sound due to undulation of electric current can be heard generally ,this is a normal phenomenon .However ,if it sounds like “tong ,tong …”,i.e., an impact sound inside the compressor ,this means that a large quantity of wet vapour of refrigerant or refrigerating oil has come into the compressor cylinder ;if it sounds like “dang ,dang…”, a striking sound of metal parts inside the compressor ,this means that some moving parts have loosened (note to differentiate this...
  • Page 12 common abnormal phenomenon ,and two or more abnormal phenomena may occur simultaneously due to a certain trouble .With this method ,you can reject some suspicious troubles and finally make a correct judgment .

  • Page 13: Analysis Of Troubles And Troubleshooting

    4.5. 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...
  • Page 14 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 .
  • Page 15 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 .
  • Page 16 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 open after shutdown .
  • Page 17 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.
  • Page 18 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.
  • Page 19 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 Start and stop of the compressor is generally controlled by a thermostat . When the temperature in the refrigerator reaches its desired value, the thermostat will shut down the compressor automatically.
  • Page 20 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 setting is not properly set or temperature sensing agent has leaked out of the temperature sensor.
  • Page 21 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;...
  • Page 22 When the heat-insulation layer inside the case body deteriorates or the door seal is not closely touches the door frame, 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.
  • Page 23 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 .
  • Page 24 Part5.Exploded View HR-153A/176A...

  • Page 25: List Of Parts

    Part6. List Of Parts List of Parts Model: HR-176A Refrigerator Model:HR-176A Product code:BA07Y0E0200 related No. In the Spare parts Failure proportion of technical exploded Spare parts description in English Model Remark number rate the spare bulletin ID view part stock...
  • Page 26 Spare parts description in English Model Remark number rate the spare bulletin ID view part stock number 0060164231 compressor bracket HR-176A 0.00% 0.00% 0064082608 screw HR-176A 0.00% 0.00% 0060504729 manual HR-176A 0.00% 0.00% 0060100574 spanner HR-176A 0.00%...

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