heat while driving

[freewill2008]

Here is some general trouble shooting information. PT owners may know some
tricks specific to your rig:

The fans blow cold because the heater core is cold. Are there other chassis
heaters (not propane furnaces) around the bus that blow warm? If so, then your
hot water circulation is working.

There is probably a Sporlan valve controlling hot water flow to the front heater
cores. The valve is controlled by a a 12 volt circuit. That circuit inlcudes
the 12 volt source power (fuse? breaker?) and one or more switches. One switch
is probably a manual control somewhere on the dash. There may also be a
thermostat (temperature controlled switch) somewhere in the dash.

Other possibilities: 1. The front heat Sporlan valve gets power, but the valve
is plugged or broken. 2. There is a summer/winter valve (manual or Sporlan)
that is shut off. 3. The front heater core is plugged.

Bob Griesel '84 FC31 WLII WA

--- In WanderlodgeForum@yahoogroups.com, Jana Ewart wrote:
>
> We are finally on the road "full-time" as of this morning. It is
> cooooollllldddd up here in the north. Can anyone give us some ideas how to
> get dash heat while going down the road? We have the right vent and left
> vent closed, the front heat under the camera is all the way to heat -- but
> the right and left fan switches only blow cold air. Is there another button
> or switch we need to turn on? Thanks so much.
> Jana (with ice cube feet)
> 89pt40wb
> The Bird House is on the road!
> Still in South Dakota
>
> --
> Blessed are the people whose God is the Lord. (Psalm 144:15)
>