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Old 04-03-2012, 03:39 PM   #1
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Thermostat wiring.....I know, I know....

Ok, First off I tried the search function here as well as other forums and Google. Didn't find the answer (at least I don't think so.) and I don't want to screw up my new trailer.

So I bought a new thermostat in the form of a Honeywell RTH2300B.


Here are the connections on the inside of the Honeywell



Here are the wires that come out of the wall and in to the current thermostat

And



My first question I guess is......will this new thermostat even work? It is ran by batteries. But the connections on the Honeywell are different than all the diagrams I have seen i.e. Hunter.

If anyone has any answers I would greatly appreciate it. Sorry for yet another thermostat question.
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Old 04-03-2012, 03:59 PM   #2
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Lets take a look in the Herkbrary.
This may help you.
It is for a "RiteTemp" model but has what you need I think.

The troubleshooting PDF has an excellent section on thermostats.
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Old 04-03-2012, 04:49 PM   #3
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My biggest concern is that the new one does not have RC or RH it only has O/B
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Old 04-03-2012, 05:25 PM   #4
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Hook it up and test it then. Biggest worry will be something does not work. Write down what you tried and if it does not work correctly reverse the wires.
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Old 04-03-2012, 06:07 PM   #5
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Here is another Hunter Thermostat that might help someone
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Old 04-03-2012, 07:46 PM   #6
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I think I may have it figured out. According to the Airxcel website it states

Red wire is for 12VDC-- Which can be taped off

Blue wire is for (-) 12VDC-- Which can be taped off right?

Yellow wire is for A/C compressor- Which should go to the Y on thermostat

Green wire is for high fan setting on A/C- Which should go to the G on thermostat if all I want is high fan

Grey wire is for low fan setting- Which should go to the G on thermostat if all I want is low fan

White wire is for the furnace- Which should go to the W on the thermostat

Does this sound/look right? My original thermostat had 6 wires going to it. The new one would only have 3 unless I wanted to put in the extra switch for Hi/Low? Or would both the green and grey have to be connected to the G on the thermostat? I assume that the furnace and the A/C have separate fans.
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Old 04-03-2012, 07:49 PM   #7
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Quote:
Originally Posted by herk7769 View Post
Lets take a look in the Herkbrary.
Love it.
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Old 04-03-2012, 08:04 PM   #8
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Someone who has done this mod needs to chime in here.
I have no idea.
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Old 04-03-2012, 08:06 PM   #9
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Have done this switch, I am hunting the document and will post it as soon as I find it.
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Old 04-03-2012, 08:18 PM   #10
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Found it and this works great. Just make sure if you add the high/low fan switch, you get the smallest one at Radio Shack and solder about 8" of wire to the terminals before installing the switch. Highly recommend adding the high/low switch. We turn it on high to cool the camper quicker and then on low to reduce the noise level.
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