94pt 'cool o matic' gally exhaust fan

[Don Bradner]

Mine also has Green, Brown, and White. Green-to-white turns the Kool-o-matic on,
Brown to white is the heater.

I replaced with a Hunter 42999B from Wal-Mart, digital. Green to the G terminal,
Brown to W, White to Rh, with a jumper from Rh to Rc. Y has no connection.

Works very, very well.

Don Bradner
90 PT40 "Blue Thunder"
Posting today by satellite near Rodanthe, on the NC Outer Banks
My location: http://www.bbirdmaps.com/user2.cfm?user=1

On 9/30/2008 at 4:47 PM Pete Masterson wrote:

>I checked all the fuses in the overhead (it's different on a PT-42)
>power center and didn't find any blown fuses/tripped breakers.
>
>After disassembling a few things, I'm suspecting that the thermostat
>is shot. There's a lot of corrosion on the back side, down where the
>switches are mounted.
>
>I'm aware of how to turn on the fan, so that's not the problem. I
>previously had intermittent operation (that is, the fan would cycle
>on and off -- without regard to the thermostat setting -- but then it
>seemed to (mostly) be working as expected for several months. Last
>Friday, it refused to go on despite whatever manipulation. In the
>past, when the fan failed to come on, slamming the front door often
>started it up -- but even that doesn't work now.
>
>I took some things apart and found no 'juice' at the fan.
>
>The thermostat has 3 wires coming it its backside, white, green, and
>brown. Shorting either the green or brown to the white (presumably
>ground) causes the toe-heater to come on. (This was with the middle
>part of the thermostat removed, so the switches weren't active.) How
>the thermostat circuits work is a mystery to me.
>
>I'm going to try to find a replacement thermostat at a home center
>(although, we're heading into Amish country in a couple of days, so
>finding a home center with anything but lanterns might prove
>difficult...)
>
>
>Pete Masterson
>'95 Blue Bird Wanderlodge WBDA 42
>aeonix1@...
>On the road near Scranton, PA
>
>
>
>On Sep 30, 2008, at 3:35 PM, Gregory OConnor wrote:
>
>> Kool o matic fan fuse on 94pt is
>> front overhead component panel circuit block A "sk5"
>> above driver ,in cabinet block close to street side,
>>
>> to turn on the fan you need to play wit the center thermostat
>> try puttining one switch to cool and the fan on auto with the
>> thermostat on a low temp setting. to have it run on auto you need to
>> pick cool I guess it keeps from exhaustinng generated heat.
>> Greg94pt
>>
>
>------------------------------------
>
>Yahoo! Groups Links
>
>
>