Control Module HVAC: Description and Operation

COMPONENT DESCRIPTION




Unified Meter and A/C amp. (Automatic Amplifier)
The unified meter and A/C amp. has a built-in microcomputer which processes information sent from various sensors needed for air conditioner operation. The air mix door motor, mode door motor, intake door motor, blower motor and compressor are then controlled.
When the various switches and temperature control dial are operated, data is input to the unified meter and A/C amp. from the A/C controller using multiplex communication.
Self-diagnosis functions are also built into unified meter and A/C amp. to provide quick check of malfunctions in the auto air conditioner system.