VirtualGarage
Vancouver, Canada
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Keep in mind not all RVs use the same coloured wires. Most of the instructions I found referred to matching colours but that didn't help me because my wires didn't correspond to them.
I had to connect them according to the function of each wire:
Original connection to New connection:
GND = RC & RH (jumpered)
HI FAN/FAN = G
COOL (A/C) = Y
FUR (furnace/heat) = W
7.5 = Not used
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robbie69
wauconda, il usa
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VirtualGarage wrote:Keep in mind not all RVs use the same coloured wires. Most of the instructions I found referred to matching colours but that didn't help me because my wires didn't correspond to them.
I had to connect them according to the function of each wire:
Original connection to New connection:
GND = RC & RH (jumpered)
HI FAN/FAN = G
COOL (A/C) = Y
FUR (furnace/heat) = W
7.5 = Not used
humm-haden't thought of that have to find original thermostat-marked on there what color went where
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robbie69
wauconda, il usa
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ok-lets try this again.
my colors, what they were hooked up to original and what they are on hunter
MINE DOMETIC HUNTER
RED/ +7.5/ not used
YELLOW/ COOL/ "Y"
WHITE/ FURNANCE/ "W"
BLUE/ FAN-HI/ Middle post(of 3)of switch
BROWN/ FAN/ "G"
GREEN/ GROUND/ "Rc"
"Rc" and "Rh" jumped along with a jumper from the #1 post of switch to "G"
I'd be willing to bet that if you do not use the switch that the FAN (my brown) would be replaced with Fan/hi(my blue) and Fan would not be used, or maybe both are used-just a guess on my part, I'd check it first
Come on Les, jump in anytime 
* This post was
edited 08/09/09 01:46pm by robbie69 *
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Bucky Badger
Madison, WI
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robbie69 wrote:ok-lets try this again.
my colors, what they were hooked up to original and what they are on hunter
MINE DOMETIC HUNTER
RED/ +7.5/ not used
YELLOW/ COOL/ "Y"
WHITE/ FURNANCE/ "W"
BLUE/ FAN-HI/ Middle post(of 3)of switch
BROWN/ FAN/ "G"
GREEN/ GROUND/ "Rc"
"Rc" and "Rh" jumped along with a jumper from the #1 post of switch to "G"
I'd be willing to bet that if you do not use the switch that the FAN (my brown) would be replaced with Fan/hi(my blue) and Fan would not be used, or maybe both are used-just a guess on my part, I'd check it first
Come on Les, jump in anytime
In your pic it looks like the Red is to the RH?
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robbie69
wauconda, il usa
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Bucky Badger wrote:
In your pic it looks like the Red is to the RH?
if you look at the closeup again between the yellow and fatter red(jumper) you'll see the TT red folded back into the wall. can see where it may look like that, but trust me, it's shoved back into the wall
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Bucky Badger
Madison, WI
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robbie69 wrote:Bucky Badger wrote:
In your pic it looks like the Red is to the RH?
if you look at the closeup again between the yellow and fatter red(jumper) you'll see the TT red folded back into the wall. can see where it may look like that, but trust me, it's shoved back into the wall
Cool, Thanks
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sonicsix
Jemison, AL
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As stated above, very easy mod to do and many people have done it... including me.
Why We RV | Our Lighthearted Blog | Our Big List of Mods | The RVer's Library
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okgc
southern Michigan
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Here is the link I used yesterday to swap out a failing Coleman thermostat in our Bounder. Cant remember the last time we used the fan on low so I skipped over the extra fan switch part and just hooked up the fan high speed wire.
http://www.klenger.net/RV_General/HVAC_H........at/hunter-digital-tstat-instructions.pdf
This was such an easy swap I am going to buy another Hunter unit for the second furnace/AC units.
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LAdams
Northern Illinois
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Well gang, the best thing to remember here is that the color coded wiring in different model trailers WILL NOT be the same... The best thing to do is inspect the old thermostat first and see if there is any terminal identification on the old stat - there usually is...
Below is a picture of my 1999 Nomad wiring... My 2006 color coding was identical but that is definitely not the norm...
Les
Plus the original wiring documentation from my article
Ground - Black or green "RC"
Fan - Orange or Tan "G"
Cool - Yellow "Y"
Ground - Black or Green "RH"
Heat - White "W"
Hi Fan - Blue Thru SPST switch to "G" (Tan)
Red - +7.5 volts DC not used
Hunter thermostat Heating System Selector switch set to "HG"... "F/C" selector switch to "F" ...
If you don't connect the hi fan lead, you'll obviously just have low fan... Connecting the hi fan lead to the "G" terminal will result in hi fan all the time...
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opnspaces
San Diego Ca
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LeBout wrote:Thanks for the info. How many trailers use the same thermostat to control both AC and heat? Mine controls the heater only. AC is ducted but controlled directly on the overhead unit only.
I don't believe you can add AC control without a lot of work. Does your t-stat control a fan speed or just the heater on and off? If it's just a heater on and off you can have it swapped out in about 15 minutes. 14 minutes to drill holes for new screws and 1 minute to wire it.
Find a way to remove the thermostat cover (it probably just pulls off) and see how many wires come out of the wall. It's probably just two which when connected together turn the heater on. Are the terminals labeled (embossed in the plastic)?
Let us know and we can help. But yes you can do it.
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