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Old 05-19-2023, 07:52 AM   #1
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Adding a wall thermostat to a Coleman Mach 3 Plus

Trying to add a wall thermostat but am struggling to get it to work. I purchased the 8330-752 control module and the ac is an 48203c866. I was trying to use a house thermostat (running off batteries) but canít get anything to happen. Donít know if I need to try a different thermostat or if I have the wrong control module. There are 4 wires from control module. They are fan hi and low, compressor and 12volt negative. I ran the yellow compressor wire to yellow on the tstat. Then I ran the fan wire to a toggle with a single wire coming off going to the G on the tstat. My 120 is all hooked up and shore power is provided. Nothing happens no fan or compressor. I didnít hook up the blue negative wire as I read somewhere online it wasnít needed. Adding some pics for reference. I ran a tstat wire from ac to wall unit. Click image for larger version

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Old 05-27-2023, 12:23 PM   #2
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Got it to work! Click image for larger version

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Old 05-28-2023, 03:33 AM   #3
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That's what I like about this forum. Folks come back with resolutions that can help us all.
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