Keep your RV comfort system running at full capability. This OEM room sensor plugs directly into Coleman Mach Zone Control 9-Series digital thermostats, giving the system an accurate ambient temperature reading from a specific zone so your air conditioning and heat pump can respond precisely -- not just to conditions at the wall unit.
Coleman Mach Zone Control systems divide your RV into independently managed temperature areas. Each zone relies on a dedicated room sensor to report actual air temperature back to the digital thermostat. Without a properly functioning sensor, the thermostat cannot accurately read zone conditions, which leads to poor comfort control, short-cycling, or a zone that simply won't respond to setpoint changes.
The 8330-5191 is the correct OEM replacement sensor for these systems. It connects to the 9-Series digital thermostat's sensor input and restores full zone monitoring capability. The white housing blends with standard RV interior trim.
Direct replacement for Coleman Mach Zone Control 9-Series digital thermostat systems -- no modifications needed.
Reports localized ambient temperature to the thermostat so each zone is controlled on actual conditions, not a shared reading.
Low-profile white housing blends with standard RV interior walls and trim panels.
Designed for straightforward swap-out when an existing sensor fails or reads inaccurately.
In a Coleman Mach Zone Control setup, the thermostat controls separate heating and cooling zones rather than running a single whole-coach system. Each zone sensor is a small thermistor-based device mounted in the living space. It continuously reports air temperature so the thermostat can modulate operation to hit the setpoint for that zone.
Over time, sensors can fail due to vibration, moisture exposure, or age -- causing erratic temperature readings or a zone that stops responding. Replacing the sensor is typically the first diagnostic step when a zone behaves unpredictably.
If one zone of your Coleman Mach system reads incorrectly, won't hold setpoint, or shows a sensor fault on the thermostat display, a failed room sensor is the most common cause. The 8330-5191 is the direct OEM fix.
This sensor is designed for use with Coleman Mach Zone Control 9-Series digital RV thermostats. The 9-Series line includes multi-zone digital control heads used in larger coaches and fifth wheels equipped with Coleman Mach ducted heat pump and air conditioning systems.
This sensor is specific to the 9-Series Zone Control digital thermostat platform. Coleman Mach produces multiple thermostat families (5-series, 7-series, 9-series analog, 9-series digital). Check your thermostat model number and confirm it is a Zone Control 9-Series digital unit before ordering. Using the wrong sensor will not restore proper operation.
This listing includes the room sensor unit (part 8330-5191) only. Thermostat control heads, wiring harnesses, zone controllers, and air conditioning units are sold separately. If your installation requires additional sensors for multiple zones, each zone requires its own sensor.