Question about Dometic Rooftop RV Air Conditioner

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I ordered a replacement relay box (Part # 3104998) for my 1998 600 Series Penguin A/C ( model # 600312.321). They sent me a 3109226.005 box that is used with 600 series A/C and other series units with more options like heat strip and phone line hook ups.. The problem I?m having is how to wirer my thermostat ( part # 3105058) to this new box. Here are the wire colors for the thermostat: Wire T?stat Yellow?. RH Blue (larger gage) W White??????.. Y RED???????. RC Blue (small gage).. H Green G The relay box has six wires two blue, two yellow, and one black, one red. It looks to me the blue wirers go to a heat strip that is not an option on my cooler. I?m lost at how to wire the thermostat to the relay box.

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1) Connect the previously run +12 VDC to the red wire labeled +12V protruding from the air conditioner. 2) Connect the previously run -12 VDC to the black wire labeled -12V protruding from the air conditioner. 3. Connect the two (2) blue wires from the air conditioner to the furnace leads (if applicable). Polarity does not need to be observed on the furnace leads. 4. Connect the air conditioner yellow wire to the EMS wires (if applicable). Do not allow the yellow wires to short out or touch, because the compressor will fail to run. 5. Connect the Comfort Control CenterTM (CCC) cable previously terminated (Control Cable) into one of the control cable leads out of the air conditioner. Either one of the two (2) control cables can be used. 6. Connect the remote temperature sensor lead into the remote sensor extension from the air conditioner (if applicable). 7. Connect the previously terminated (Control Cable) 4 conductor control cable into one of the control cable leads out of the air conditioner for the next zone (if applicable). 8. If the unit is a heat pump model, route the ambient air sensor cable, already installed in the base model, through the grommet in the control kit and attach it to the connector that matches its color (RED P3). ----------- check out.Keep updated.

Posted on Aug 20, 2010

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