HEATING AND COOLING
CUSTOMER CARE | 877.855.2867
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modes of operation, the unit takes fresh air from outside
of the vehicle and heats or cools it before discharging into
the cockpit area. Only when operated in the MAX A/C
mode does the system recirculates air from inside the
cockpit area, thus maximizing the cooling eect of the air
conditioner.
Operating Features
e air conditioning system is designed to operate in all
modes except VENT, FLOOR and OFF. Operating the air
conditioner provides signicant moisture, dust, and pollen
removal for enhanced passenger comfort. Use MAX A/C
and HI Fan for quick cool down. To assist with cooling,
close all windows and vents to hot, humid outside air.
To achieve the maximum comfort in the motorhome, the
air must be directed where it is needed. Some dash units
may feature a mode switch, which gives the driver the
ability to select where the air will ow; oor, dash vents,
or a blend.
GENERAL MAINTENANCE
Keep the condenser and radiator free of bugs and debris.
During periods of little use, operate the A/C system
monthly to keep the compressor lubricated. Periodically
inspect belts and hoses for wear and proper tension.
Warranty/Service
If repairs are necessary during the terms of the motorhome
warranty, please contact the nearest authorized or Motor
Coach dealer for service. In the event repairs are necessary
during your travels, contact or Motor Coach Customer
Care. Certain individual parts of the Heating and Air
Conditioning System such as the compressor, dryer and
condenser are covered under the chassis manufacturer’s
warranty.
NOTE: Components covered under the TMC Limited
Warranty must be Original Equipment Manufacturer
(OEM) parts. The installation of after market compo-
nents or unauthorized repairs may void the warranty.
Heating/Cooling with Multiplex
Integration
Your motorhome may be equipped with a programmable
multiplex system that, among other features, will include
integrated control of the motorhome’s interior climate
(both heating and cooling), and all HVAC-related devices.
Your multiplex system panel may look dierent than the
illustrations below, but will function similarly.
TO OPERATE:
1. Turn ON the Master Battery Disconnect Switch , pro-
viding 12 volt DC power to the HVAC control unit(s).
a. If heat is desired, ensure the main propane valve is
ON prior to selecting HEAT.
b. If cooling is desired, ensure 120 volts AC is available
for the air conditioner(s).
2. Select the Temperature-setting feature by either
touching the temperature icon along the edge of the
multiplex panel, or touching the temperature icon on
the panel screen.
3. Select the zone you wish to control. Depending on
motorhome conguration, there may be one, two, or
three temperature zones.
4. Select cooling or heating by pressing the appropriate
area on the screen.
5. Select the desired temperature setting by either touch-
ing the UP or DOWN arrows.
If desired, select the fan speed by touching the HIGH,
LOW, or AUTO areas on the screen.
Typical multiplex control panels depicting climate control display
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