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My hobart daf1 freezer stopped working on me which I realized was because of the exhaust fan vent clogged with dust. I cleaned it out really well and it started cooling again but it makes a high pitched humming noise and won't freeze. The temperature stays in the green for refrigeration but doesn't go into the blue for freeze.

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6 Suggested Answers

6ya6ya
  • 2 Answers

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Posted on Jan 02, 2017

  • 641 Answers

SOURCE: High-pitched noise

Could you specify if noise is coming from : - The freezer - The outside back of the refrigerator - The bottom of the refrigerator

Posted on Jun 13, 2006

HVACRH20
  • 237 Answers

SOURCE: Our refrigerator/freezer will stop working (not cool or freeze) then days later will begin to work again.

It's either the start device on the compressor or you have a bad compressor. You'll have to pull it away from the wall and take the bottom back panel off to check the compressor. It will likely be real hot to the touch from what you described happening. If there is a little white colored box on the left side take that off and remove the wires, etc. and shake it... if it rattles and debris falls out then that's the problem. It's fairly common and they make a kit to replace it with a better designed part that's real easy to install yourself. If your compressor has a label on it with a blue indian head symbol, then you're out of luck as that brand pretty much sucks and is destroyed by heat. It would mean a new compressor and then you'd be lucky if the new one even worked from the factory. Avoid those Tecumseh compressors at all cost.

Posted on Jan 08, 2007

  • 116 Answers

SOURCE: Amana French Door Refrigerator "on" but no cooling; freezer still works

There are 2 possible problems. One is the defrost cycle is not working properly this is usually indicated by a large amount of frost on the back freezer panel. If so, the circuit will have to be repaired and the evaperator thawed to remove the ice build up. The other is the fresh food damper is not working properly this is behind the "lump" in the back of the fridge compartment above the top shelf, remove the louver panel to see if it is open or closed. closed will be warm open should be cold. The water dispenser reservoir is probably frozen due to poor air circulation.

Posted on Mar 11, 2007

  • 1462 Answers

SOURCE: Refrigerator not cooling.

compressor has failed. not a diy job

Posted on Apr 25, 2007

  • 400 Answers

SOURCE: Maytag Performa Bottom Freezer refrigerator making weird noises

This can be due to low supply voltage, causing the compressor thermal overload to trip out. Therefore when this happens the compressor gets hot and it keeps trying to start but fails. It can also be a faulty starter relay, which is located in the conncetion box of the compressor and is very simple to replace.

Posted on Mar 20, 2009

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Overheating amilo


Overheating When the CPU overheats then it will shut down (i.e. thermal overload) and won't boot up again until it has cooled down. If this is the problem is not fixed then the CPU will eventually fail.
A faulty fan causes the problem or the fan and heat sink assembly are clogged with dust.
Check the CPU fan to see if it spins freely, if not replace the fan.
If the fan and heat sink is clogged with dust the remove the dust and make sure the vents are clear and dust free. Use a small brush and can of compressed air to do this.

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OverheatingWhen the CPU overheats then it will shut down (i.e. thermaloverload) and won't boot up again until it has cooled down. If this is theproblem is not fixed then the CPU will eventually fail.
A faulty fan causes the problem or the fan and heat sink assembly are cloggedwith dust.
Check the CPU fan to see if it spins freely, if not replace the fan.
If the fan and heat sink is clogged with dust the remove the dust and make surethe vents are clear and dust free. Use a small brush and can of compressed airto do this.

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After about 5 mins my laptop shuts off and the fan is working and the area where the hard drive gets really hot


You have a clogged heatsink and fan, This can be accessed by removing the thermal door hatch on the base of the laptop, cleaning is a matter of getting a small paintbrush and vacuum and dusting out the debris which will have collected around the intake and exhaust vents.

This is a link to the manual, choose the green download at the bottom of the page as this is the free download

https://rs307l35.rapidshare.com/#!download'307tg'99018275'SG_AS5680_5630_3690_TM4280_4230_2490_BOOK.pdf'7860'R~0

IF you choose to remove the fan assembly for cleaning, then make sure you apply fresh thermal grease to the cpu before re-assembling it

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Refrigerator Has stopped chilling/ keeping things cool and freezer has stopped freezing.We Have Cleaned all the Vents of Dust and Hair And Checked Coils Foe Freezing. What Else should be done To Ensure Itz...


Check fan in freezer. Put your ear inside and listen and feel vents for air circulation

Also you might need a hardstart relay installed on compressor.
Check with local parts dealer for the part (ERP410) Instructions are on the kit. Easier than you think to install.

If this was helpful please rate me.
IMUFO2

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1 Answer

The fan motor works, but is not venting the room


It might take some work, but you should be able to get at the exhaust vent by removing the grill, light fixture and fan. Might be best to try and find where it is vented to, hopefully an outside area. If you can, there are some small over the counter type of things you can use to try and clean the vent. One is a window brush that is on a long pole, found in the window cleaning area of the Home Depot. This is a soft brush that will not damage (famous last words) the exhaust vent. There is also a flapper door of sorts that closes at the fan when the fan is not running. Might be that the flapper is stuck in the closed position. Good luck!!

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My dell latitude d530 gets really hot after some time using it, and sometimes, the fan stops working


sounds like the fan may be failing. Things you can do:
  1. Clean the intake and exhaust vents with canned compressed air
  2. Replace the cooling fan
  3. Replace the heatsink and/or use heat transfer compound like Arctic Silver and ensure heatsink is not clogged with debris

Dec 30, 2009 | Dell Latitude D530 PC Notebook

1 Answer

The compressor on my Hobart DAF1 starts buzzing after an hour of being on


this may just be vibration. the compressor has 3-4 rubber feet between the compressor and the frame on the freezer. check for dry rot or any direct contact between the 2 components

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2 Answers

Auto shut down due over heat


Very Very Carefully disassemble the laptop, and clean out the processor fan, and any other "vent" looking things. Lots of times hair (especially pet), dust and other pollutants will clog these, or they may stop working all together, and need replaced.

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1 Answer

Freezer not freezing/ fridge not cooling


HI, you will need to inspect the compressor to make sure it is cycling in intervals. if the compressor is not cycling, this will confirm compressor failure. The evaporator fan blows cold air into the freezer and from there it vents into the refrigerator. Occasionally the vents between the freezer and refrigerator can become clogged with ice, food or other debris. In most refrigerators the cold control for the refrigerator opens and closes these vents. That mechanism may become inoperative resulting in the vents becoming stuck open or closed.

Inspect the vents to determine what is preventing the free flow of air. An overcrowded refrigerator or freezer may be the cause. In other cases the vents may need to be cleaned or ice melted away. To remove a build up of ice, use a hair dryer set to "low". Using a higher setting may damage the freezer. CAUTION: Do not let melting ice drip onto the hair dryer. In some models, the vent is located under the temperature control console. The housing either snaps into place or is held in place with screws. Remove the screws, or gently depress the retaining clips with a small screwdriver. Allow the housing to hang by its wiring. A freezer vent control may also have to be removed to access the vent. In some freezer-on-top models, it may be necessary to remove the floor of the freezer to inspect for obstructions.

The condenser coils dissipate heat. If dust and debris accumulate around the coils, your refrigerator may not be able to cool properly, it may run continuously or it may stop completely as a result of an overheated compressor. You should clean rear-mounted coils once a year. Unplug the refrigerator before cleaning. Refrigerators are heavy, never tip one forward or backward. Never attempt to move a refrigerator without an assistant. Vacuum or brush the coils. If coils have a filmy build-up, use warm soapy water to clean them. Take care not to spill or drip water onto the components of the refrigerator.You should clean floor level coils at least twice a year. Unplug the refrigerator before cleaning. Vacuum or brush the coils. Remove the grill from the front of the refrigerator and use a vacuum with a wand attachment to remove any dust and debris. The grill should snap off and on. Pull firmly toward you and possibly upward to remove the grill. If it does not come off with a modest effort, check for screws or retaining clips that may hold it in place.

Another inspection point will be the door seals. This is a easy way for the cold air to escape from your unit as well. thsi will cause the temperature to rise. The seal should make smooth continuous contact with the refrigerator case. When the seal does not seal completely, warm air enters the appliance. This results in more frequently compressor operation and possibly the inability of the appliance to maintain proper temperature. To test the seal, use the dollar bill test. Place a a dollar bill or a piece of paper between the seal and the refrigerator and close the door. Now pull the paper out. You should feel tension as you pull. Retest along the entire door seal. Replace the seal if the test was unsuccessful.

Next will be the door switch. The interior light in most refrigerators, and the fan in some, is controlled by a door switch. When the door is closed, the switch is depressed and the interior light goes off and the fan resumes normal operation. If the door is misaligned or the switch malfunctions, the refrigerator may become warm as a result of the non-operation of the evaporator fan and the heat generated by the interior light. Test the switch for continuity using a multimeter. Set the multimeter to the ohms setting X1. Place a probe on each terminal. The multimeter should change from a reading of infinity to zero when the probes touch the terminals. With the probes still touching the terminals depress the switch, the reading should change back to infinity. If it does not pass both of these tests, the switch should be replaced.

Be sure to confirm evaporator fan function as well. if the fan is defective, it will prevent proper cooling as well.

This will conclude the most common issue with a under preforming unit. I would advise to check all the above and, if the unit continues to not cool after all the above adjustments are made, i will recommend replacing the cold control device and thermostat.

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This issue is normally caused by the CPU heat sink vents becoming clogged with dust and debris. To clean the heat exchanger, use a can of compressed air to blow in the air intake and exhaust vents to try and dislodge the dust and dirt. You need to alternate blowing in the intake then the exhaust multiple times until no more dust is evident (May take 10 or 15 times) then blow the vents out about once a month.

Also, avoid using the system on any soft surface, always use a hard flat surface. If used on a rug, bed, quilt, sofa, lap etc, the vents can be blocked restricting airflow, again causing the fan to race all the time.

If this fails to resolve, then the heatsink and/or the fan may need to be replaced

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