{"product_id":"coleman-mach-9420a330-12v-multi-zone-wall-thermostat","title":"Coleman-Mach 9420A330 12V Multi-Zone RV Wall Thermostat","description":"\u003cp class=\"nvn-hero\"\u003eThe Coleman-Mach 9420A330 is the digital wall thermostat that runs a multi-zone RV climate setup. 12 volt DC, black case, with a real temperature readout and fan speed control. If your coach runs two or more rooftop units, this is the control that ties them together at one panel.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThe Coleman-Mach 9420A330 is the wall thermostat that runs a multi-zone Coleman-Mach climate setup. If you've got a coach or fifth wheel with more than one rooftop unit, this is the control that ties them together at a single panel. Digital readout, 12 volt DC, black case. It's the brain on the wall, not the box in the ceiling.\u003c\/p\u003e\n\u003cp\u003eHere's the thing about multi-zone RVs. A big diesel pusher or a long fifth wheel often carries two or three rooftop air conditioners so the bedroom and the living area can hold their own temperatures. The 9420A330 is built for exactly that. You set your zones from one spot, read the temperature off the digital display, and let the system decide which units run. Each zone tracks its own set point, so nobody's stuck fighting over one number for the whole rig. No more walking front to back adjusting separate controls.\u003c\/p\u003e\n\u003cp\u003eIt runs on 12 volt DC, which is how Coleman-Mach wires their low-voltage control side. That matters when you're troubleshooting or replacing a dead thermostat. This isn't a 24 volt residential stat and it isn't a household wall thermostat. It's the RV-specific control that talks to the Coleman-Mach zone control box over the coach's 12 volt system. If your old display went dark or the buttons quit responding, swapping in the correct 12 volt part is what gets you cooling again.\u003c\/p\u003e\n\u003cp\u003eThe digital readout is the upgrade a lot of owners are after. You get an actual temperature number on the screen instead of guessing where a slider sits. Fan speed control is built in, so you can drop the blower to low overnight when you want quiet, then bring it back up when you're cooking in the afternoon heat. The temperature range runs from 32 to 158 degrees, which covers everything from a frosty morning boondock to a full-sun parking lot in July.\u003c\/p\u003e\n\u003cp\u003eThe black case is the standard Coleman-Mach look. It sits flush on the wall and keeps a clean profile next to your other panels. If your coach was originally built with a black thermostat, this drops right in and matches.\u003c\/p\u003e\n\u003cp\u003eNow, a couple of honest notes before you buy. This is the wall thermostat only. In a multi-zone Coleman-Mach system it works together with a zone control box, the unit that actually switches the rooftop air conditioners and furnace on and off. If your system already has a working control box and you just need a new wall stat, you're in the right place. If you're building a system from scratch or your control box is also bad, you'll want to confirm both pieces match. When in doubt, check the model on your existing control box before ordering so everything speaks the same language.\u003c\/p\u003e\n\u003cp\u003eInstall is straightforward for anyone comfortable pulling a wall plate and matching up low-voltage wires. Kill the 12 volt power first, note how the existing wires land, and transfer them one at a time. Take a phone photo of the wiring before you pull anything, that's the easiest way to get it back exactly right. Coleman-Mach publishes wiring instructions for these controls, and the terminals are labeled. If you've wired a trailer plug or added a 12 volt accessory, you can handle this. If low-voltage wiring makes you nervous, it's a quick job for any RV tech.\u003c\/p\u003e\n\u003cp\u003eWho's this for? RVers with a multi-zone Coleman-Mach rooftop setup who want a clean digital wall control with real temperature readout and fan speed adjustment. Motorhomes, fifth wheels, and larger travel trailers with two or more rooftop units are the sweet spot. It's not a fit for a single-knob mechanical stat setup or a non-Coleman system, and it isn't the air conditioner itself. It's the control that makes a multi-unit rig comfortable from one spot on the wall.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e12 Volt DC operation wired to the Coleman-Mach low-voltage control side for a direct RV replacement\u003c\/li\u003e\n  \u003cli\u003eDigital temperature readout so you set an actual number instead of guessing at a slider\u003c\/li\u003e\n  \u003cli\u003eMulti-zone control runs two or more rooftop units from one wall panel\u003c\/li\u003e\n  \u003cli\u003eFan speed control lets you drop the blower to low for quiet nights and back up for peak heat\u003c\/li\u003e\n  \u003cli\u003eTemperature range of 32 to 158 degrees covers cold mornings to full-sun afternoons\u003c\/li\u003e\n  \u003cli\u003eBlack case matches factory Coleman-Mach panels and sits flush on the wall\u003c\/li\u003e\n  \u003cli\u003eWall-mount design with labeled low-voltage terminals for a straightforward swap\u003c\/li\u003e\n  \u003cli\u003eWorks with the Coleman-Mach zone control box to switch rooftop air conditioners and furnace\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Coleman reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat does the Coleman-Mach 9420A330 do?\u003c\/summary\u003e\n    \u003cp\u003eIt's the wall thermostat for a multi-zone Coleman-Mach RV climate system. You set your zones and read the temperature from one digital panel, and the system runs your rooftop units to match.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this a 12 volt thermostat?\u003c\/summary\u003e\n    \u003cp\u003eYes. It runs on 12 volt DC, the low-voltage control side Coleman-Mach uses in RVs. It isn't a 24 volt or household thermostat.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan it control more than one air conditioner?\u003c\/summary\u003e\n    \u003cp\u003eYes, that's the point of the multi-zone design. It's built for coaches and fifth wheels running two or more rooftop units so different areas can hold their own temperatures.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it have a digital display?\u003c\/summary\u003e\n    \u003cp\u003eIt does. You get an actual temperature readout on screen instead of a mechanical slider, which makes dialing in a comfortable setting a lot easier.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes it have fan speed control?\u003c\/summary\u003e\n    \u003cp\u003eYes. You can drop the blower to low for quiet overnight running and bring it back up when you need maximum airflow in the heat.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat's the temperature range?\u003c\/summary\u003e\n    \u003cp\u003e32 to 158 degrees, so it covers everything from a cold boondocking morning to a hot afternoon in a full-sun lot.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this include the zone control box?\u003c\/summary\u003e\n    \u003cp\u003eNo, this is the wall thermostat only. In a multi-zone Coleman-Mach system it works with a separate zone control box that switches the rooftop units. If you just need a new wall stat and your control box is good, this is the part.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill it work with my Coleman-Mach rooftop unit?\u003c\/summary\u003e\n    \u003cp\u003eIt's designed for Coleman-Mach multi-zone systems. Before ordering, check the model on your existing control box so the wall thermostat and control box match.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs it hard to install?\u003c\/summary\u003e\n    \u003cp\u003eNot for most owners. Kill the 12 volt power, note how the existing low-voltage wires land, and transfer them one at a time to the labeled terminals. If low-voltage wiring isn't your thing, it's a quick job for an RV tech.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eColeman-Mach 9420A330 12V Multi-Zone RV Wall Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eColeman\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e9420A330\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e755790009626\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eProduct Line\u003c\/th\u003e\n\u003ctd\u003eColeman-Mach\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eVoltage\u003c\/th\u003e\n\u003ctd\u003e12 Volt DC\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eControl Type\u003c\/th\u003e\n\u003ctd\u003eMulti-Zone Wall Thermostat\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDisplay\u003c\/th\u003e\n\u003ctd\u003eDigital Readout\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCase Color\u003c\/th\u003e\n\u003ctd\u003eBlack\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eFan Speed Control\u003c\/th\u003e\n\u003ctd\u003eYes\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eTemperature Range\u003c\/th\u003e\n\u003ctd\u003e32 to 158 Degrees F\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMounting\u003c\/th\u003e\n\u003ctd\u003eWall Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What does the Coleman-Mach 9420A330 do?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's the wall thermostat for a multi-zone Coleman-Mach RV climate system. You set your zones and read the temperature from one digital panel, and the system runs your rooftop units to match.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this a 12 volt thermostat?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. It runs on 12 volt DC, the low-voltage control side Coleman-Mach uses in RVs. It isn't a 24 volt or household thermostat.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can it control more than one air conditioner?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes, that's the point of the multi-zone design. It's built for coaches and fifth wheels running two or more rooftop units so different areas can hold their own temperatures.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it have a digital display?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It does. You get an actual temperature readout on screen instead of a mechanical slider, which makes dialing in a comfortable setting a lot easier.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does it have fan speed control?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. You can drop the blower to low for quiet overnight running and bring it back up when you need maximum airflow in the heat.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What's the temperature range?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"32 to 158 degrees, so it covers everything from a cold boondocking morning to a hot afternoon in a full-sun lot.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this include the zone control box?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No, this is the wall thermostat only. In a multi-zone Coleman-Mach system it works with a separate zone control box that switches the rooftop units. If you just need a new wall stat and your control box is good, this is the part.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will it work with my Coleman-Mach rooftop unit?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's designed for Coleman-Mach multi-zone systems. Before ordering, check the model on your existing control box so the wall thermostat and control box match.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is it hard to install?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Not for most owners. Kill the 12 volt power, note how the existing low-voltage wires land, and transfer them one at a time to the labeled terminals. If low-voltage wiring isn't your thing, it's a quick job for an RV tech.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Coleman","offers":[{"title":"Default Title","offer_id":45005352075357,"sku":"2007965","price":193.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_8894fc99-234c-458e-9667-5caa35873d37.png?v=1788761362","url":"https:\/\/nvnmarine.com\/products\/coleman-mach-9420a330-12v-multi-zone-wall-thermostat","provider":"NVN Marine","version":"1.0","type":"link"}