Compressor Control

SYSTEM

AUTOMATIC AIR CONDITIONING SYSTEM (WITH FOREST AIR) : Compressor Control


DESCRIPTION

- When the compressor activation condition is satisfied while blower motor is activated, A/C auto amp. transmits compressor operation signal to electric compressor via UART communication.

COMPRESSOR PROTECTION CONTROL AT PRESSURE MALFUNCTION

When high-pressure side value that is detected by refrigerant pressure sensor is as per the following state, ECM requests A/C auto amp. to turn A/C cut request signal.
2
- 2.64 MPa (26.40 bar, 26.9 kg/cm, 383 psi)
2
- 0.14 MPa (1.40 bar, 1.4 kg/cm, 20 psi) or less

LOW TEMPERATURE PROTECTION CONTROL






- When intake sensor detects that evaporator fin temperature is 1�C
(33.8�F) or less, A/C auto amp. requests electric compressor to turn compressor OFF, and stops the compressor.
- When the evaporator fin temperature returns to 4�C (39.2�F) or more, the compressor is activated.