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Haier HTE21W, Руководство по обслуживанию

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22

v.  The temperature of the gas discharge tube drops  

 

vi.  There is no sound of gas eruption from the liquid in the evaporator, and  

 

vii.  No gas gushes out of the process tube when cut 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 Is Clogged With Ice

 

 

Analysis of Problem 

This is typically a result of a poor dryness treatment, improper air purging, or 
substandard water content. The symptoms of this condition are:  

 
- Irregular refrigeration, extreme frosting at the clogged area, 

 

- Evaporation temperature drops below 0°C or 32°F,  

 

- Water accumulates and gradually clogs the narrow part of the capillary,  

 

- Frost to melt at the evaporator, there is no sound of gas flowing,  

 

- The gas suction pressure becomes a vacuum.  

 

Note that these phenomena will appear intermittently. In order to know 
whether the system is clogged with ice, heat the parts that are suspected with 

hot water. If the sound of gas flowing is heard and the gas suction pressure 
rises, the trouble is that the system is clogged by ice. 

 

Remedy 

If there is too much moisture in the refrigerating system, release the 

refrigerant, purge the tubing with nitrogen, and then refill the system with the 

filtered refrigerant. Another method is to connect a filter with moisture 
absorbers, such as silica gel or anhydrous calcium chloride, to the refrigerating 
system. Next, replace the filter, evacuate it again, and fill the system with 

refrigerant.

 

 

3) 

Refrigerating System Is Clogged With Dirt 

  

 

Analysis of Problem

 

Coarse-grained dirt and refrigerant oil in the system tend to settle and clog 

the capillary inlet. Flow of refrigerant stops when the filter screen is completely 
clogged by dirt. This condition has the same symptoms as when the refrigerating 
system is clogged by ice. However, when you heat the clogged area with a hot 

towel, there is no reaction. After rejecting the possibility of ice clogging, it can be 
concluded that the clogging is due to dirt. 

 

Содержание HTE21W

Страница 1: ...HAIER REFRIGERATOR Service Manual PART RF 8888 38 HAIER AMERICA TRADING LLC www haieramerica com ...

Страница 2: ...ts Contents 2 Product Code Explanation And Series Introduction 3 Specification 4 Safety Precautions 5 Parts And Functions 9 Function Schedule 10 System Flow Chart 11 Circuit Diagram 12 Maintenance And Troubleshooting 13 ...

Страница 3: ...3 Product Code Explanation And Series Introduction ...

Страница 4: ... QQ biscuit SS stainless steel Power Supply V Hz 115 60 115 60 Rated Input Power W Power Consumption kW h 24h 1 40 1 40 Net Weight lbs 247 247 Gross Weight lbs 265 265 Unit Dimension D W H inch 33 x 31 x 65 7 8 33 x 31 x 65 7 8 Packing Dimension inch D W H 35 x 34 7 16 x 66 7 32 35 x 34 7 16 x 66 7 32 Container Quantity 40 HC PCS 42 42 ...

Страница 5: ... grounding outlet Power cable is filed with three core grounding plugs complying with three core grounding outlet In no case should the third plug pin grounding of the power cable be removed WARNING Do not damage power cable Be sure not to unplug unit by power cable Hold plug firmly to unplug Do not let the body of the unit have contact or press power cable Take care of power cables to avoid damag...

Страница 6: ...ons 1 Unplug unit prior to cleaning or repairing 2 Unplug unit before replacing damaged Lamp to prevent electrical shock WARNING It is not advisable or prohibited to keep hazardous inflammable or explosive items like acid or alkali into refrigerators WARNING Do not keep medicine vaccines or chemical reagents in refrigerator This refrigerator is household use and cannot store items with strict temp...

Страница 7: ...her flammable substances in the vicinity of the refrigerator to avoid fire outbreak WARNING Do not play with the door to avoid damage WARNING Do not keep heavy objects on refrigerator WARNING Do not touch refrigerator with your wet hands when it is in operation to avoid your hand form getting stuck to the freezer WARNING Do not spray water onto the unit or install unit at a wet place to avoid inte...

Страница 8: ...rator gets damaged WARNING Do not keep bottled items in the freezer compartment to avoid frost crack WARNING Unplug power supply when carrying out cleaning Switch power on 5 minutes after to prevent any damage WARNING Dismantle door and door gasket before disposing off a refrigerator to avoid damag unsuspecting persons or children ...

Страница 9: ...ption of Components 1 Ice Making Ware 2 Ice Storage Box 3 Wire Shelf 4 Refrigerator Lamp 5 Snack Ware 6 Cantilever Shelf 7 Humidity Adjusting Slide 8 Door Rack 9 Egg Tray 10 Bottle Rack 11 Tall Bottle Rack 12 Humidity Maintaining Box ...

Страница 10: ...tic defrosting 2 Round door design and fashion handles 3 Energy saving 4 Adjustable humidity crisper 5 Isolated food shelf 6 Crisper with adjustable moisture Moisture in the crisper can be adjusted for satisfaction of vegetables and fruits storage ...

Страница 11: ...11 System Flow Chart 1 Schematic Diagram Of System Flow Chart 1 Compressor 2 Condenser 3 Dry Filter 4 Capillary Tube 5 Evaporator 6 Air Fan 2 Cold Air Flow ...

Страница 12: ...frigerators with two doors A mechanical type of all the control is generally adopted The thermostat directly controls the start and stop of compressor and hence the refrigerator temperature Low Temperature Compensation in the above schematic diagram When the ambient is below the set temperature the switch will be closed and the heating will work thus ensuring the normal start and operation of refr...

Страница 13: ...5 whiles in an upright position Overload Protector Check for continuity between terminals 1 and 3 YES YES YES YES Starting Relay In upside an down position check for continuity between terminal 2 and 6 YES Electrolytic capacitor at 115V No continuity between terminals If normal resistance drops to 0 temporarily then rises to infinity YES NO NO NO NO NO Compressor Motor lock Inter lay short of moto...

Страница 14: ...mperature it should be closed Bimetal Thermostat Check for the continuity between BROWN and WHITE lead wires At room temperature it should be closed D Check for the continuity between RED and WHITE lead wires The Freezer And Refrigerator Rooms Are Not Sufficiently Cold Check Point Indication Cause Of Trouble Instruction Diagnosis Does the processor operate Is refrigerator installation distant from...

Страница 15: ...ll foreign material or frost Replace the motor Has the fan motor coil short circuited Replace the fan motor Is there heavy frost or ice accumulated to the evaporator Defrost Control is faulty Replace Defrost Timer Does evaporator get cold when the f thermostat is by passed F Thermostat is Faulty Replace the F Thermostat Is the evaporator cooled only partially after operating for more than 30 minut...

Страница 16: ...rtly after the compressor has stopped running This sound therefore does not constitute a problem b Clicking Noises Refrigerators often make clicking noises This is also normal It is the result of the intake or release of the armature of a current dead weight start relay when the compressor is started The compressor motor makes a clicking sound while it is running This sound is faint in the daytime...

Страница 17: ...g to their respective features Experience in servicing is very important for troubleshooting Well experienced service technicians can correctly identify and solve problems based on their comprehensive analysis of the characteristics of the particular problems as well as the operating conditions for various kinds of refrigerators Three Essential Things To Note During A Checkup Look a Check the tubi...

Страница 18: ...od b After the compressor has operated for 5 10 minutes feel the condenser The temperature of its upper part should be higher than that of its lower part or its right part is hotter than its left part depending on the type of condenser coil This indicates that the refrigerant is circulating properly If the condenser is not hot then the refrigerant is leaking If the condenser is hot for only a few ...

Страница 19: ...ems detecting the leak points charge the system with nitrogen to help identify leaks Drain the system of the nitrogen before refill with refrigerant 2 Too much refrigerant in the system Analysis of Problem a If amount of refrigerant in the system exceeds its nominal capacity the excess refrigerant will displace the evaporator This will reduce the heat dissipation area and decrease the refrigeratin...

Страница 20: ...een is use for a long time Remedy 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 Inspect to see if there is pressure at the discharge port with your finger In a normal compressor it is difficult block the dischar...

Страница 21: ...n meshes become clogged by dirt This results in a decrease in flow rate and a poor refrigerating effect The effects of clogged filters included decrease of gas discharge pressure the drop in the temperature of discharged gas and for severe cases condensation and frosting may appear Remedy Purge the tubing After replacing the dry filter or cleaning it thoroughly refill the system with refrigerant a...

Страница 22: ...omena will appear intermittently In order to know whether the system is clogged with ice heat the parts that are suspected with hot water If the sound of gas flowing is heard and the gas suction pressure rises the trouble is that the system is clogged by ice Remedy If there is too much moisture in the refrigerating system release the refrigerant purge the tubing with nitrogen and then refill the s...

Страница 23: ... for abnormal sounds coming from the compressor Oftentimes broken pieces of valve block strike against the cylinder Check to see if the compressor casing is too hot 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 will be ...

Страница 24: ...ly there are three possibilities First is that the air has been sucked into the system during repairs due to carelessness Secondly it has not been completely purged evacuating the system The third possibility is that there are leak points at the low pressure end of the refrigerating system Leak points appear in low temperature parts or assemblies This is because the evaporation temperature is lowe...

Страница 25: ...toppage due to other causes Normal Stoppage 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 problem care should be taken to differentiate it from other real problems in servicing Compressor won t start In case the compres...

Страница 26: ... 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 Measure the voltage with a voltmeter if it is really too low give directions to the user for buying a stabilizer to step up the voltage thus normal operation can be achieved C Check The Thermal Relay To See Whether Its Contacts Are Closed Analysis of Problem The cont...

Страница 27: ...e motor is damaged repair or replaced it with a new one ii Control Relay Is Faulty Analysis of Problem Overheating burns or wearing of control relay contacts will generally occur if this is true All these will cause poor contact in electricity Remedy Dismantle it for repairs or replace it with a new one iii Poor Electric Contractor In Thermostat Analysis of Problem Damaged contractor and leakage o...

Страница 28: ... check the temperature control knob to see whether it is set in the position coldest b Thermostat Is Malfunctioning And Makes The Compressor Running Continuously Analysis of Problem When the thermostat does not work normally it will make the compressor run continuously and hence very low temperature will be achieved in the refrigerator The fault is generally because the contacts of the thermostat ...

Страница 29: ...ture poorer ventilation and heat dissipation make the compressor run without stopping Electric Leakage Of Refrigerator a Slight Electric Leakage Electric insulation has deteriorated due to being affected with damp thus resulting in slight electric leakage b Serious Electric Leakage Refrigerator case has become live due to faults occurred in some electric devices or the erroneous wiring in installi...

Страница 30: ...l 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 lying of tubes or the loosening of parts may cause Vibration 4 Inspection Method To find the sources of noise press the vibration s...

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