Dedicated cool-only zone control for multiple Coleman Mach air conditioners. 12 VDC. Works with 9-Series Digital Zone Thermostats.
The Coleman Mach 9430A751 is a cool-only zone control box engineered to communicate with and control multiple Coleman Mach air conditioners simultaneously from a single location. Each rooftop AC unit requires its own dedicated control box, which then connects to a compatible 9-Series Digital Zone Wall Thermostat for centralized zone management throughout your RV.
This control box is strictly for cool-only use and is compatible exclusively with Coleman Mach Series air conditioners. It is not compatible with heat pump units — see the 9530A751 or 9630A751 for heat pump and heat-ready applications.
Control multiple AC units from one central thermostat location
Works with Coleman Mach 9330A3341 and 9330A3351 digital zone thermostats
Designed exclusively for Mach Series cool-only air conditioners
Operates on 12 VDC — standard RV low-voltage power
Each rooftop air conditioner must have its own dedicated control box. For example, if your RV has three AC units, you need three separate control boxes. Because this 9430A751 is cool-only, units with different system types (heat pump, heat/cool) will require different control box part numbers. Verify your AC type before ordering.
The 9430A751 works only with Coleman Mach cool-only air conditioner units. It is not compatible with heat pump systems or Mach 8 units with heat strip. For heat pump applications, use the 9530A751 or 9630A751 control box instead.
The 9430A751 control box is designed to pair with the following Coleman Mach 9-Series Digital Zone Wall Thermostats: 9330A3341 — 9-Series Digital Zone Thermostat (Black) 9330A3351 — 9-Series Digital Zone Thermostat (White) These thermostats allow you to manage all connected zones from a single wall-mounted location. Each thermostat can control up to four rooftop AC units when used with the correct control box for each unit.
In the Box: • 9430A751 Zone Control Box • Installation Hardware • Wiring Diagram / Instructions Sold Separately: • 9-Series Zone Thermostat (9330A3341 or 9330A3351) • Additional control boxes (one required per AC unit)
If your RV has a mix of AC system types, each unit requires the correct control box: 9430A751 — Cool-Only (this item) 9530A751 — Heat Pump / Mach 8 with Heat Strip 9630A751 — Heat Pump (alternate configuration) All 9xxx series control boxes work with the same 9330A3341 / 9330A3351 zone thermostats.