Opel Frontera UE. Manual - part 1221

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–5

Ventilation

Setting the air source select lever to “FRESH" position
allows the heating system to work with sending the
fresh air from outside.

The blower fan also serves to deliver fresh outside air to
the passenger compartment to assure adequate
ventilation.

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SECTION

1A–6

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Control Lever Assembly

The control lever assembly has some cables to control
the mode and temperature of the heater unit and the
mode door for the air source of the blower assembly.

The fan control is used to control the amount of air sent
out by the resistor at four levels from “LOW" to “HIGH".

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Air Source Select Lever

The intake of outside air and the circulation of inside air
are controlled by sliding this lever left or right.

Fan Control Lever

This lever controls the blower motor speed to regulate
the amount of air delivered to the defrost, foot, and
ventilation ducts:

1. Low

2. Medium Low

3. Medium High

4. High

Temperature Control Knob

When the temperature control knob is in the “COLD"
position, the air mix door closes to block the flow air to
the heater core.
When the temperature control knob is in the “HOT"
position, the air mix door opens to allow air to pass
through the heater core and heat the passenger
compartment.
Placing the knob in a intermediate position will cause a
lesser or greater amount air to reach the heater core. In
this mode the passenger compartment temperature can
be regulated.

Legend

(1) Air Source Select Lever
(2) Air Select Knob
(3) Fan Control Lever (Fan Switch)

(4) Air Conditioning (A/C) Switch (W/ A/C)
(5) Temperature Control Knob
(6) Middle Position

SECTION

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

1A–7

Flow of Each Position of the All Select Dials

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Air Select Knob

The air select knob allows you to direct heated air into
the passenger compartment through different outlets.

1. Vent – In this position, air is discharged from the

upper air outlet.  Air quantity is controlled by the fan
control lever.

2. Bi-Level – In this position, air flow is divided

between the upper air outlets and the floor air
outlets, with warmer air delivered to the floor outlets
than the air delivered to the upper air outlets when
the temp lever is in middle position.

3. Foot – In this position, air flow is delivered to the

foot, while sending a small amount of air to the
windshield.

4. Def/Foot – In this position, air flow is delivered to

the foot, while sending approx. 40% of total amount
of air to the windshield.

5. Defrost – In this position, most of the air is delivered

to the windshield and a small amount is delivered to
the side windows.

Moving the air source select lever to the “CIRC" position
provides quickest heat delivery by closing the blower
assembly mode door.  In this position, outside air is not
delivered to the passenger compartment.

SECTION

1A–8

HEATING, VENTILATION AND AIR CONDITIONING (HVAC)

Circuit Diagram

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SECTION