220 • Section 9 — Electrical Systems - Chassis Cayman 2006
MAX A/C - Recirculated air is drawn from the passenger area and discharged through the
dash louvers.
A/C - Fresh Air is drawn from outside into the system and discharged through the dash louvers.
VENT - Fresh air is drawn in and discharged throughout the dash.
OFF - The blower motor does not operate. The fresh air inlet door will close, minimizing
outside air infi ltration into the motorhome.
BI-LEVEL - Fresh air is drawn in and discharged through the dash and the fl oor.
FLOOR - Fresh air is drawn in and discharged through the fl oor louvers.
MIX - Fresh air is drawn in and discharged through the fl oor and defrost louvers. The A/C
system operates to dehumidify the discharged air.
DEFROST - Fresh air is drawn in and discharged through the defrost louvers. The A/C
system operates to dehumidify the discharged air.
Heat and Defrost Operation:
The air conditioning compressor operates in all modes except VENT, FLOOR and OFF to dehumidify the
air. Rotate the temperature control switch to set discharge air temperature.
• Set the Mode Control Switch to the desired position.
• Set the Temperature Control Switch to the red zone.
A/C Operation:
The air conditioning compressor operates in all modes, except vent, fl oor and off, to dehumidify the air. Rotate
the temperature control switch to set discharge air temperature.
• Setting the Mode Control Switch to A/C will allow outside air into the system.
• Setting the Mode Control Switch to MAX A/C will recirculate inside air. Select this position when
maximum cold air is desired.
• Set the Temperature Control Switch to the blue zone.
Operating Hints and Tips:
• Air intake and discharge temperatures are greatly affected by ambient temperature and relative humidity.
• A large amount of cooling capacity is used to dehumidify air as well as cool it. After three to fi ve minutes
of A/C compressor operation, discharged air temperature should be approximately 30º F cooler than the
fresh or recirculated air entering the A/C system.
• The air system on the motorhome must have adequate pressure to operate the damper doors.
• At the beginning of the day, activate the compressor with the engine at idle. This will avoid sudden high
speed activation resulting in damage from lack of internal compressor lubrication.
• The dash A/C and heater system should be used monthly to keep the compressor lubricated.
A/C
MAX
A/C
OFF
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