BAC Forum

General Boards => Technical Support => Topic started by: Larry Fritz on July 11, 2010, 08:00:24 PM

Title: Condenser Fan not running on Air Conditioner
Post by: Larry Fritz on July 11, 2010, 08:00:24 PM

I have a 98 Beaver Patriot, 37'.  The air conditioning system does not deliver 12VDC to the fan. (The fan is good - in fact I have a cheat switch on it now).  I wonder if anyone has a electrical schematic that shows all the switches, relays, etc that are involved in sending power to the fan.  My system is now fully charged and cools fine; but, I want to get rid of the manual cheat switch. The 12V bay below the driver has a K2 relay labeled "condenser fan" but where does it get its signal from?  Any help will be appreciated.

Title: Re: Condenser Fan not running on Air Conditioner
Post by: Richard And Babs Ames on July 11, 2010, 09:36:33 PM

On our 1997 Patriot the switch is a pressure switch that depends on freon pressure to turn on the electric fan. We do not have any diagrams.

Title: Re: Condenser Fan not running on Air Conditioner
Post by: Tom and Pat Fudale on July 11, 2010, 11:52:25 PM

Condenser fan is controlled by a pressure switch called a trynary switch and is located on the front ofthe coach on the high pressure hose of the system. New switch can be ordered at Acme radiator.

Title: Re: Condenser Fan not running on Air Conditioner
Post by: Keith Moffett Co-Admin on July 12, 2010, 01:03:32 PM

Larry
We also have a '98 Pat.  The dash A/C has Acme stamped on it.  I went looking and this is the story as I understand it.
Acme was a diversified company.  A/C was only part of it. The company was bought by a Sweedish (I think) outfit that seperated and closed the A/C division.  One of the older employees bought out the stock and set up business.
As of 4/2009 this was the contact info.
913-515-1560  (Richard)
sales @myacparts.com

If you need more information, I have some of the diagrams.  I cant lay my hands on them but I can look.  Let me know if you need it but I think the web site will help and they had the trinary switch with a picture so you can know what to look for on yours.  I believe yours is behind the front access panel (hood).  Just down and to the right by the black cylinder with a round viewing glass on top (the drier).

Good luck
Keith

Title: Re: Condenser Fan not running on Air Conditioner
Post by: Larry Fritz on September 04, 2010, 04:25:10 AM

1998 Patriot 37': The problem with my condenser fan not operating on the chassis air conditioner was a faulty "trinary" switch. Had to substitute a different trinary switch since my original (Ranco SP3-H2060 000 has been discontinued. Never could find the true specs on the original switch so a generic was used to replace it.
The good news is that it was the female thread type that connect to a Schrader valve; therefore, the freon did not need to be removed.

Larry Fritz

Thanks to several of you who responded and offered your comments. Definitely appreciated.