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Old 08-03-2009, 03:28 PM   #1
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Help with dash temperature control

I have a 1996 HR Navigator. The rheostat temperature control pictured below is wired to the water valve" (also pictured below) and either one or both do not work. The rheostat turns smoothly from blue stop to red stop, but there is no corresponding action from the control motor above the valve. Can anyone tell me who the manufacturer of these controls is? I've looked at Evans Tempcon but don't see my controls in their catalog.
There are four wires leading into the valve motor and I'm not sure how to test the motor or the rheostat control.
I know most coach builders use commonly available items from car manufacturers and the like, but I haven't been able to identify these. I'd like to replace them with the same if possible, if not I'll try switching them out for something available in a local boneyard, or as a last resort, attach an aftermarket "choke" cable with a "PULL FOR HEAT" label thru the dash. Thanks for any help or insight.

on edit: Does anyone know exactly how the " Over the Road (OTR) " position is supposed to function? I asked Monaco techs and dealers, but never gotton a response that made sense. If it helps, there are two A/C compressors (one on top of the other) in the rear on the Cummins.
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Old 08-04-2009, 10:13 AM   #2
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Here is a Link if you do not have to Evans.
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Old 08-04-2009, 12:20 PM   #3
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I appreciate your reply. If you were directing me toward the Evans link ( Evans Tempcon water valve change ), I have looked at this as a possible replacement but was hoping someone would recognize what I have now. Plus I figured someone might know about this OTR thing. Thanks - L
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Old 08-05-2009, 12:14 AM   #4
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Quote:
Originally Posted by Loosestar View Post
Does anyone know exactly how the " Over the Road (OTR) " position is supposed to function? I asked Monaco techs and dealers, but never gotton a response that made sense. If it helps, there are two A/C compressors (one on top of the other) in the rear on the Cummins.

Any chance OTR stands for "other"??? I notice that they've got FLR for "floor".
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Old 08-05-2009, 05:42 AM   #5
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Thanks for the reply. Anything is possible. I got "Over The Road" from the Monaco tech that I asked. He said he had heard of the system but had no personal experience with it. He told me he would try to find out and if he learned anything he would get back to me. Never heard from him again.
Hard to believe that no one has any info on these two items. Glad neither one is critical. Usually the folks here are very knowledgable about these older coaches.
Thanks - L
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