Chassis heat problems

[Don Bradner]

Yes, someone has nylon-tied them open.

On 3/3/2008 at 4:36 AM ronmarabito2002 wrote:

>Don: Have you checked to make sure your manual valves on the engine
>are open. These valves are notorious for vibrating into a closed
>position.
>
>R.E. (Ron) Marabito, Dallas, TX 92WB40
>
>--- In WanderlodgeForum@yahoogroups.com, "Don Bradner"
> wrote:
>>
>> Until a few days ago, my chassis heat was working fine, now it is dead.
>>
>> The chassis heat on this coach is a lot simpler than has been
>described for many others. No summer/winter valves, no always-on
>Sporlans, no Webasto or Primus.
>>
>> The water system consists of a single Sporlan valve and a pump, both
>actuated by a slide switch in the cockpit (below the backup monitor
>controls). The valve should open and the pump turn on whenever the
>switch is in the Warm position and the ignition key is on.
>>
>> When this is done (engine off in order to hear things), there is a
>discernible click at the Sporlan, and the pump starts. After a few
>seconds, a circuit breaker can be heard to pop, and it goes off. Maybe
>ten seconds later the breaker resets and things run for a few seconds
>more.
>>
>> Question: Could this be a stuck Sporlan (pump blowing breaker
>because of back pressure)? I've looked through the various documents
>available and don't see a good way to test a Sporlan valve.
>>
>> Don Bradner
>> 90 PT40 "Blue Thunder"
>> Posting today by satellite from Pea Soup Andersen's, Santa Nella, CA
>>
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