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Old 09-27-2008, 11:11 AM   #1
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1976 Argosy 26
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Question HELP, heater/AC fan problem

Hi,
I am hoping that someone out there can give me a great tip! I have a '75
Argosy 26 foot M/H. It is near all original, (though I did replace the green shag rug.)

My major problem is that the heater/AC fan cuts out and then starts again for a minute or two and repeats. The local parts guy says it probably is the heater motor resistor.

That sounds like a good place to start, BUT I can't locate it. Anyone out there have an idea where it is?

Thanks in advance for any and all help...John
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Old 09-27-2008, 11:44 AM   #2
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The heater and the AC are two different units. The AC is mounted on the roof and the heater is most likely under the sink or somewhere near there.
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Old 09-27-2008, 11:53 AM   #3
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Rivet Heater/AC Problem

Hi John,

Iím assuming you said heater/AC because the AC has a heat strip, correct? Richard is correct about the furnace being different. A little more information, like what brand and model AC would help.

Iím no expert by any means, but if the fan starts and runs for a while it doesnít sound like a resistor problem. What happens if you run it on fan only?
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Old 09-27-2008, 04:12 PM   #4
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Since its a motorhome, I assume he is talking about the in dash unit?

Sorry, I don't know where to locate the resistor.

Maybe someone with an Argosy motorhome ...
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Old 09-27-2008, 08:27 PM   #5
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Kind of makes me wonder if someone hasn't installed a small circuit breaker in place of a fuse in your fuse block. They sell small breakers that replace the fuses and they automatically reset after they cool down. You might check your fuse block and see if that sort of swap has taken place.

Brad
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Old 09-28-2008, 08:51 AM   #6
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Lightbulb Whoops, help AC/heater fan...

Sorry about limited info. Thanks Guy99

The heater/AC fan I am discussing is the dash unit. I am assuming that the Argosy and Airstream are the same on this, based on a P30 Chevrolet chassis....so any Airstreamers that may have an answer would be appreciated.

It is a 1976, 454 26' Motorhome, and the problem is that when the AC or heater is on, the fans blow for a minute or so, and then cut off. A few minutes later they come back on and then repeat the scenario. I have replaced the multispeed control switch in the dash and that did not solve the problem. My local partsman suggested that it was the AC/heater motor inline resistor. I am unable to find it and have indeed found that the fans themselves seem to be in a bomb proof metal box!

Anyone? Thanks, John
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Old 09-28-2008, 01:17 PM   #7
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Quote:
Originally Posted by KenaiJohn View Post
Sorry about limited info. Thanks Guy99

The heater/AC fan I am discussing is the dash unit. I am assuming that the Argosy and Airstream are the same on this, based on a P30 Chevrolet chassis....so any Airstreamers that may have an answer would be appreciated.

It is a 1976, 454 26' Motorhome, and the problem is that when the AC or heater is on, the fans blow for a minute or so, and then cut off. A few minutes later they come back on and then repeat the scenario. I have replaced the multispeed control switch in the dash and that did not solve the problem. My local partsman suggested that it was the AC/heater motor inline resistor. I am unable to find it and have indeed found that the fans themselves seem to be in a bomb proof metal box!

Anyone? Thanks, John
If the fan motor has a thermal cut out it may be overheating and shutting down until cools off. Starts back up and repeat.....
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