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HVAC, Air Conditioners, Aqua Hot, Primus, Webasto, Chassis Heaters, Furnaces and Water Heaters Questions and information about the wide variety of Heating and Air Conditioning as well as Water Heater systems available are discussed here.

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  #1  
Old 07-23-2018
robertnm robertnm is offline
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Default 1983 PT40 electric and LPG suburban Heater

Can't locate shut off valve for living room heater
How to remove this heater and the one in the bedroom, How to access them?
The 3 electric heaters do not work even with cat breaker on How to test or repair?
Thank you for any advice.
Just cutting my teeth on this enterprise
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  #2  
Old 07-23-2018
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gcyeaw gcyeaw is offline
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For both the electric heat/ air conditioners there are switches above the drivers head that enable contactors to supply 110 power. That allows you to turn them on or off while driving. They should be marked front, mid and rear (if you have three ac's, or just front and rear if you have two). (same power for AC and heat)
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86 PT-36 Golden Memories
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Old 07-23-2018
robertnm robertnm is offline
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Thank you.
The switches are on and the air for on.
Do I turn off the aircon units at the controls before the heaters work?
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Old 07-23-2018
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In my PT36 the rear suburban is removed by removing the outside vent assembly (remove screws and pull straight out), then remove the wood panel on the inside in front of the heater (there are screws into the top of the panel from above), Then you will have access and see the power and propane connections, disconnect them. Remove the front metal cover. There should be one or two screws on the bottom front of the case holding the heater to the floor. Then slide the heater out.


The living area heater is removed from the top after sliding the couch and following the instructions for the rear heater. On mine the power and propane are accessed through a vent behind the drivers seat.
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86 PT-36 Golden Memories
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78 FC 33 Happinest (Sold)
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Old 07-23-2018
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gcyeaw gcyeaw is offline
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Quote:
Originally Posted by robertnm View Post
Thank you.
The switches are on and the air for on.
Do I turn off the aircon units at the controls before the heaters work?
There is no interlock, both will work when the switches are on. Do the AC's work?
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Gardner Yeaw
86 PT-36 Golden Memories
83FC35 SB $IXTEEN TON$ SOLD
78 FC 33 Happinest (Sold)
Ridgewood, New Jersey
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  #6  
Old 07-23-2018
robertnm robertnm is offline
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Yes all three but the electric heaters do not regardless of the direction which I turn the knob
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Old 07-23-2018
markkitch markkitch is offline
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Don't you have wall thermostat's for these? All three not working would tell me there is a switch somewhere not engaged. I would think it would be rare for all three to be out. Just my opinion.
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  #8  
Old 07-23-2018
robertnm robertnm is offline
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Chasis heat thermostat. Turned on no electric heat tegardlrss of knob position.prebious owner of 10+ years never used these three heaters...
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  #9  
Old 07-23-2018
Bruce Bruce is offline
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I read where the electric heaters have some sort of safety feature that if the heater is full of dust bunnies it wont run. I know that the heaters were the subject of a recall away back when. Have you checked to see if there is voltage at the heaters?. You should at least clean up the heaters as a safety measure. The thermostat( the one in the heater) contacts are sometimes corroded.
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  #10  
Old 07-23-2018
robertnm robertnm is offline
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Every think looks fine no dust bunnies no corrosion.
Can't get to the wiring to test voltage.

Another mystery?
Just trying to find out what works.
I will use strip heater in air conditioning.
Bathroom heater heater under the kitchen sink and a ceramic heater.
Where would suggest checking voltage?
Air conditioning on same ckt work fine.
Thanks for your thoughts.
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