94pt 'cool o matic' gally exhaust fan

[Pete Masterson]

Good info!! Just what I needed to know. If I can find a Walmart in
this state, I'll take a look at the Hunter thermostat.

Pete Masterson
'95 Blue Bird Wanderlodge WBDA 42
aeonix1@...
On the road near Scranton, PA



On Sep 30, 2008, at 9:56 PM, Don Bradner wrote:

> 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
>>>
>>
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