Archive for September, 2012

RV RiteTemp 6030 thermostat upgrade

I got tired of the wide temperature swings, and guess what temperature I was setting, from our analog thermostat in the RV and decided to swap it out.  I have had a RiteTemp thermostat in our house for years and love it, so I decided to get one for the RV.  I went down to Home Depot and picked up a RiteTemp 6030.

First thing I had to do was figure out how to hook the wires up to the new thermostat.  The existing wires were not labeled, so I had to work backwards from the existing thermostat manual to label the wires.

The very first thing I did was take a few pictures, to document it in its working form, in case things don’t work out, I can always revert back.

Coleman Mach (original install diagram)

Mach wires <-> Notation <-> RV wires
Green <-> GH <-> Green
Grey <->  GL <-> 5 pair small white
Yellow <->  Y <->  Yellow
White <->  W <->  2 pair small white
Blue <->  N/A <->  large single white AND blue
Red <->  RH <->  2 pair small red

The RiteTemp install for my setup was to be like this:

RiteTemp <-> RV wires
Y <-> Y
G <-> GH & GL (high and low fan speed together, basically loosing low speed capability)
W <-> W
N/A <-> B (B or negative 12 volts was not to be used)
RH <->  RH

Set the jumpers on RiteTemp 6030 to:
1. Empty
2. Jumper
3. Empty
4. Empty
5. Jumper

However the A/C fan would not turn on in this configuration.  A day later, and many hours pondering what was wrong, I figured out I needed to connect the “unused” blue wire to the mysterious large white wire (presumed to be ground).  As soon as that was done, the A/C fan fired right up and everything worked as it should.

Now that everything is functional, I need to go back and clean up my installation.  I need to remove each wire and trim it down so bare wire isn’t exposed.  I also would like to use some electrical tape around the wiring bundle to prevent it from ever coming apart on its own.  And last, I need to find some stand off’s to put behind the RiteTemp, so it not only fits better in the previous enclosure, but also allows better airflow around it to sense temperature more accurately.

I did this writeup for anyone else that may attempt to replace their thermostat with a standard house thermostat.  What helped me was reading other peoples posts on how they got their setup working.  I figured I would do the same thing for anyone else struggling with their install.  If you have questions, let me know!

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