1999 HONDA ODYSSEY cooling

Heating and Cooling

How to Use the System

This section covers how to set up the system controls for ventilation,
heating, cooling, dehumidifying, and defrosting.
The engine must be running for the heater and air conditioning to
generate hot and cold air. The heater
uses engine coolant to warm the air.If the engine is cold, it will be several
minutes before you feel warm air
coming from the system.
The air conditioning does not rely on engine temperature.
It is best to leave the system in Fresh
Air mode under almost all conditions. Keeping the system in Recirculation
mode, particularly with the A/C off,can cause the windows to fog up.
Switch to Recirculation mode when
you are driving through smoky or dusty conditions, then switch back to
Fresh Air mode when the condition
FAN CONTROL
DIAL
MODE BUTTONS

TEMPERATURE
CONTROL DIAL

RECIRCULATION
BUTTON

clears.

The outside air intakes for the heating and cooling system are at
the base of the windshield. Keep

these clear of leaves and other
debris.
Ventilation
The flow-through ventilation system draws in outside air, circulates it
through the interior, then exhausts it
through vents near the rear side

panels.

1. Turn the temperature control dial all the way to the left.
Make sure the A/C is off. 2. Select and Fresh Air mode.
3. Set the fan to the desired speed.
Comfort and Convenience Features
CONTINUED

AIR CONDITIONING BUTTO
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Heating and Cooling

To Cool with A/C

1. Turn on the A/C by pressing the button. The light above the button
should come on when a fan speed
is selected.
2. Make sure the temperature control dial is all the way to the left. 3. Select
4. If the outside air is humid, select
Recirculation mode. If the outside
air is dry, select Fresh Air mode.
5. Set the fan to the desired speed.
If the interior is very warm from
being parked in the sun, you can cool it down more rapidly by setting up
the controls this way:
1. Start the engine.
2. Turn on the A/C by pressing the button. Make sure the tempera-
ture control dial is all the way to
the left.
3. Set the fan to maximum speed.
4. Open the windows partially. Select and Fresh Air mode. FAN CONTROL

DIAL

MODE BUTTONS


TEMPERATURE

CONTROL DIAL
RECIRCULATION BUTTON
When the interior has cooled down to a more comfortable temperature,close the windows and set the
controls as described for normal

cooling.
Air conditioning places an extra load
on the engine. Watch the engine
coolant temperature gauge (see page 63 ) when driving in stop-and-go
traffic or climbing a long, steep hill.
If it moves near the red zone, turn off the A/C until the gauge reads
normally.
Comfort and Convenience Features AIR CONDITIONING
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Heating and Cooling

To Heat

To warm the interior:
1. Start the engine. 2. Select and Fresh Air mode.
3. Set the fan to the desired speed.
4. Adjust the warmth of the air with
the temperature control dial.
To Heat and Dehumidify with Air

Conditioning

Air conditioning, as it cools, removes moisture from the air. When used in
combination with the heater, it
makes the interior warm and dry.
1. Switch the fan on.
2. Turn on the air conditioning. 3. Select and Fresh Air mode.
4. Adjust the temperature control
dial so the mixture of heated and
cooled air feels comfortable.
This setting is suitable for all driving conditions whenever the outside
temperature is above 32°F (0°C).
To Defog and Defrost

To remove fog from the inside of the
windows:

1. Switch the fan on. 2. Select
When you select the
system automatically switches to
Fresh Air mode and turns on the
A/C.
3. Adjust the temperature control dial so the air flow from the
defroster vents feels warm.
4. Turn on the rear window defogger to help clear the rear window.
When you switch to another mode from the A/C stays on.
Press the A/C button to turn it off.

CONTINUED

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Heating and Cooling

To remove exterior frost or ice from the windshield and side windowsafter the vehicle has been sitting out
in cold weather:
1. Start the engine. 2. Select
When you select the
system automatically switches to
Fresh Air mode and turns on the
A/C.
3. Switch the fan and temperature controls to maximum.
To rapidly remove exterior frost or ice from the windshield (on very colddays), first select the Recirculation
mode. Once the windshield is clear, select the Fresh Air mode to avoid
fogging the windows. FAN CONTROL
DIAL
MODE BUTTONS
TEMPERATURE
CONTROL DIAL
Comfort and Convenience Features RECIRCULATION
BUTTON

AIR CONDITIONING
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Heating and Cooling

These settings direct all the air flow to the defroster vents at the base ofthe windshield and the side windowdefroster vents. The air flow will get
warmer and clear the windows faster as the engine warms up. You can
close the corner vents with the dial
beside each vent. This will send
more warm air to the windshield
defroster vents.
For safety, make sure you have a
clear view through all the windows
before driving away. To Turn Everything Off
To shut off the system temporarily,
turn the fan speed and temperaturecontrol dials all the way to the left.
You should shut the system completely off only for the first few
minutes of driving in cold weather,
until the engine coolant warms up
enough to operate the heater. Keep
the fan on at all other times so stale air does not build up in the interior.
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Climate Control System

On EX model

The automatic climate control system in your Honda picks the
proper combination of air condi-
tioning, heating, and ventilation to maintain the interior temperature
you select. The system also adjusts the fan speed and air flow levels.
Your vehicle also has a rear A/C unit that allows the rear passengers toadjust the heating, cooling, and air
flow (see page 146).
The direction of air flow from the vents in the center and each corner of the dashboard is adjustable.
Move the tab in the center of each
vent up-and-down and side-to-side.
The corner vents can be opened and closed with the dials next to them.
CENTER VENTS

There are four vents in the ceiling (see page 148).
The climate control system draws air through the exterior vents at the
bottom of the windshield. Keepthese vents clear of leaves and other
debris.
CORNER VENT

For the climate control system to
provide heating and cooling, the engine must be running.

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Climate Control System

Fully-automatic Operation
To put the Automatic Climate Control in fully-automatic mode,
press the AUTO button and set the
fan control dial to AUTO, then set the desired temperature by turning
the temperature control dial. You willsee FULL AUTO in the system'sdisplay. The light above the button also shows you which
mode, Recirculation or Fresh Air, is
selected.

The system automatically selects the proper mix of conditioned and/or
heated air that will, as quickly aspossible, raise or lower the interior
temperature from its current level to the set temperature.
When you set the temperature to itslower limit (60°F/18°C) or its upper
limit (90°F/32°C), the system runsat full cooling or heating only. It does
not regulate the interior temperature.
When the temperature is set between the lower and upper limits,
the system regulates the interior
temperature to the set value.
In cold weather, the fan will not
come on automatically until the
vehicle has been driven for a short
time and the heater starts to develop
warm air. Pressing the OFF button shuts the
climate control system completelyoff. Keep the system completely off
only for short periods. To keep stale
air and mustiness from collecting,
you should have the fan running at
all times.

Comfort and Convenience Features TEMPERATURE
CONTROL DIAL FULL AUTO

DISPLAY
FAN CONTROL DIAL
OFF BUTTON
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Climate Control System

Fan Control Dial

You can manually select the fan speed by turning the fan control dial.
When you turn the dial clockwise, the fan is taken out of automaticmode and starts to run at its lowest
speed. Turning the dial fully
clockwise increases the fan's speed,
which increases air flow.

Rear A/C Control Dial

With this dial, you can adjust the rear A/C unit heating, cooling, andair flow (see page 146).

Mode Button

Use the MODE button to select the
vents the air flows from. Some air will flow from the dashboard corner
vents in all modes. Each time youpress the MODE button, the display shows the mode selected. Press the
button four times to see all the
modes.
MODE BUTTON
REAR A/C CONTROL DIAL
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