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A/c-Heater System - Automatic: Overview Volvo V70 I

Automatic HVAC System 1 illustration ~106 words

DESCRIPTION

The Electronic Climate Control (ECC) module (A/C-heater control panel) contains a function selector dial, driver's and passenger's temperature dials, a recirculated air switch, AC ON and OFF switch, and a fan speed (blower motor) control lever. (Scheme 3) The heater (blower motor) fan is controlled by ECC output (power) stage. Air conditioning system will only operate above 32°F (0°C). Blower switch must not be in zero position to allow compressor to engage.

Additional system components include sun sensor, outside temperature sensor, interior temperature sensor, low-pressure switch, 4 damper motors, pressure sensor, engine coolant temperature sensor, and A/C relay

Scheme 3

Scheme 3: DESCRIPTION