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gene, RV Mechanic
Category: RV
Satisfied Customers: 1100
Experience:  28 yrs exp in the industry
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Installing the 6400 on my RV with propane furnace and AC.

Customer Question

installing the 6400 on my RV with propane furnace and AC. there r 6 wires to the old one Y, R, B, W, Grey and green. where to now???
JA: Did you check the furnace's filters?
Customer: no, need to know how to wire to the 6400 thermostat
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: don't think so. i have 6 wires on the RV and only 5 connections for the 6400
Submitted: 1 month ago.
Category: RV
Customer: replied 1 month ago.
there r 2 wires coming to the thermostat . #1 wire has yellow, blue, red, and green
#2 wire has white, green, and red
wired to thermostat as follows
#1 yellow to yellow
#1 green to green
#1red to grey
#1 blue & #2 white to blue
#2 green to white
#2 red to red
Expert:  Randall replied 1 month ago.

Whose thermostat are you using? Not familiar with a "6400" as such by that number.

Customer: replied 1 month ago.
Expert:  Randall replied 1 month ago.

I am not familiar with that for RV use, so I will opt out of this question and let another tech offer something. I like to stick with the brand of the A/C so I know it will work without modifications.

Expert:  Randall replied 1 month ago.

I see nobody responded here. See the attached link and tell me if this is what you are trying to hook up here?

Customer: replied 1 month ago.
That is the thermostat I am tryin to install
Expert:  Randall replied 1 month ago.

That isn't going to be a good match for what you have. You would be limited to just a single fan speed for one. What was the old thermostat make and part number if you have it?

Customer: replied 1 month ago.
It's a Coleman-Mach, couldn't find a model #. 2 speed fan doesn't seem to be working anyway
Expert:  Randall replied 1 month ago.

I will go ahead and opt out of this as I don't have the information on the interchange. Perhaps another tech here might.

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