Question about Parallax Power Supply Parallax 7300 Series Electronic Converter/Charger, 55A

1 Answer

Why does the cooling fan run all the time ?

When its plugged in to AC it runs all the time

Posted by Orlando Tatone on

  • mwredd Oct 14, 2014

    The cooling fan should not run all the time. The cooling fans in your converter are designed to come on when needed to cool the DC converter section or converter unit only. The fan circuit is controlled by a thermister and is triggered primarily by the amount of DC current the converter is supplying to the DC system while the converter is powered on.

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Troy Crowder

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I suggest you call Parallax Power Supply
100 W 11
th
St. Suite 100
Anderson, IN 46016
Ph: (800) 443-4859 Fax: 765-608-5235

Posted on Jul 02, 2014

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1 Answer

Why are my cooling fans for radiator running constantly?


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My 1994 Toyota Previa LE overheats when I put on AC. It overheats while on idle.


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Jul 10, 2013 | Cars & Trucks

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sounds normal, the fans were made to run continuous w/ ac running, but on sensor when ac is off. if car isn't overheating, the fans are probably running from time to time ,but your just not catching them running

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When I turn on my a/c the car starts to everheat


When ever the car overheats,it is always the best thing on your car,to check the cooling fans.When the ac is on,look to see if the cooling fans are running,and running fast,and smoothly.In your case,I am going to go out on a limb,and say they are not.First check for blown cooling fan fuse.Then,if the fuses are alright,check the cooling fan relays,most likely more than one.One prong,or spade coming out of the relay,is ground(where it plugs up).To make the relay energize,ground this terminal with a test light .Just like you are using the test light to check for 12 volts.When you touch the ground spade on the relay it will energize the relay to turn the fans on.Just pull the relay out of it`s spot,just enough to touch the spade.Do this with the ac on,and engine running.The clutch relay on most cars will energize the relay,but the ac compressor is working on your car,so it is either the fan relay,or the high side switch on the ac system that is bad.Try and see if the cooling fans,both of them,or one of them,will come on by them selves as the car warms up,with the ac off.The fan or fans should come on,and go off by themselves.Don`t let the engine overheat,keep a good eye out not to let that happen.If the fans never come on,then,the fan,or fans could be bad.You can test them by running wire from battery to the fan,and grounding to frame.Now the fuse,or relay being bad will also cause this.If a fuse is blown,then ,one or more of the fans are bad,and will have to be replaced.The fans cool the radiator for the engine and transmission cooling,and the condenser for the ac system.If the condenser is not cooled down,the ac freon will be to warm to cool the vehicle.If I can help,let me know.>>[email protected]

Aug 26, 2009 | 2000 Honda Civic

1 Answer

Mercedes benz airconditioning


You might check the cooling fans on the condenser to see if they are running when the ac is on.If they are not check for blown fuse,or bad cooling fan relay.Do you notice if the ac cools better when running constantly,and the ac is not so cool when in traffic,stopping and going,and running slow?If so the cooling fan,or fans are not working.If the fan fuse and the relays check out fine,then replace the fan,or fans.If I can help any more please [email protected]

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1 Answer

Kia over heats when air is on only


your AC cooling fan is not working properly, most vehicle has two fans, one for the radiator and another for AC, both work in sync with one another; if one cooling fan only working it does not produce enough cooling for both radiator and condenser at the same time; by running ac you producing more heat and its cant cool the engine fast enough with one fan so your engine is overheating when running AC. The temperature sensor could be faulty and need to be replace or your fan motor can also be faulty. Check the fuse first and the relay make sure they are not burn out. sensor cost about 30 bucks get it new, relay 35-40 new used 5 bucks at junk yard, fan get it from a junk yard for 25-30 bucks, new will run over 100 bucks. don't run the air and overheat your motor, it can damage your engine or may blow your radiator. if you do run ac watch the temp very closely, don't let temperature get into the red.

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1 Answer

Ac fan does run


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1 Answer

Cooling fans will only turn on if engine is off only


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