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Koolomatic circuit breaker / fuse

September 26, 2015, 02:50:08 pm

My Kool o'matic has stopped working in the kitchen and before I start tearing it apart I was hoping one of you fine folks could tell me if there was a circuit breaker or fuse to check first. Thank you for help in advance.

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Re: Koolomatic circuit breaker / fuse

Reply #1 – September 26, 2015, 04:19:57 pm

Probably fuse is in front of bed on small 12volt panel behind metal door.

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Re: Koolomatic circuit breaker / fuse

Reply #2 – September 26, 2015, 04:26:12 pm

Ours works, but was Kool O' matic a problem and should I get ready to replace it with some other brand?

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Re: Koolomatic circuit breaker / fuse

Reply #3 – September 26, 2015, 04:56:05 pm

What works and what is broken?  K-O-M takes 12 volts to switch, which sends 12v to resistor located in fan air flow and then to motor.  K-O-M moves a lot of air in rain or sun.

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Re: Koolomatic circuit breaker / fuse

Reply #4 – September 26, 2015, 06:05:40 pm

Ours is fused by 15A at the foot of the bed panel in position 8. The Kool O'Matic really does move a good deal of air.  Glad to have them.

(Makes me proud to be a little Irish!) Great name!

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Re: Koolomatic circuit breaker / fuse

Reply #5 – September 26, 2015, 10:18:30 pm

Barry and Old Knucklehead,

Thank you for the quick response to my question. The fuse was good so I took off the inside grate. Right away I could see that the threeway Resistor Blower Fan Switch had failed. I search the part number on eBay and found one for 59.00. Ouch!! Searching on Google I was able to buy one from Nostalgic AC Parts for 19.99 plus shipping of 6.00.

Thanks to this forum for all you do!!

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Re: Koolomatic circuit breaker / fuse

Reply #6 – September 26, 2015, 10:31:06 pm

Awesome job Brother

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Re: Koolomatic circuit breaker / fuse

Reply #7 – October 02, 2015, 01:26:31 pm

Switch update:

I received my new switch from Nostalgic AC Parts in Ocala, Fl today. Looking at both switches together you can see that they are not exactly the same. The older switch has much larger coils in it and also terminates at different position on the switch itself. However it is still a 3 position switch. So I installed it to give it a try.

First things first the fan worked perfectly on the high setting. On the low setting the fan did work but you can see that the coil heated up to a glowing red almost instantly. Not a good sign! Looking at the old switch again I could see that it to had heat damage where it failed.

So my question to you fine people is have you noticed this with your switch when set to the low postion of your Koolomatic?

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Re: Koolomatic circuit breaker / fuse

Reply #8 – October 02, 2015, 04:51:19 pm

That is the function of that "resistor".  That is how the motor slows down.  Totally normal.  Time to reinstall and have a refreshing drink of something to reward yourself for diagnosis and repair.  Best of Travels!

Oh, by the way, that is why those things wear out.  The heat eventually breaks down the unit. 

If I am wrong, sorry, I think that is right.

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Re: Koolomatic circuit breaker / fuse

Reply #9 – October 02, 2015, 05:55:24 pm

I am going to say you have the wrong switch. The switch you have is made for a smaller motor that does not require as much current yours does.  If by chance the switch is correct it could be the motor is going out and thus the reason for not running at the lower voltage.  When you are on high the switch is bypassing the resistors and it is a direct connection. When you select lower speeds the resistors should reduce the voltage to the motor, thus reducing the speed.

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Re: Koolomatic circuit breaker / fuse

Reply #10 – October 02, 2015, 10:41:04 pm

It might not matter, but on my 1998 U295, I just found my fan fuse is in #6 position on the foot of the bed 12 volt box.

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Re: Koolomatic circuit breaker / fuse

Reply #11 – October 03, 2015, 02:54:18 pm

Thanks again to everyone for your inputs.

Charles, I installed the switch and it works just fine. As you say that is the function of that "resistor". I poured me three fingers of Markers Mark and relaxed.

TurboJack, Thank you for your insight. I will keep an eye on it.

Dave, Thank you  I found that my fan fuse is in #6 position also.

What a great forum! 

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Re: Koolomatic circuit breaker / fuse

Reply #12 – October 03, 2015, 03:03:39 pm

The resistor is mounted in the stream of flowing air for a reason.....

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Re: Koolomatic circuit breaker / fuse

Reply #13 – October 03, 2015, 03:25:46 pm

Krush,

That's what I was thinking.

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