DTC 09

CIRCUIT DESCRIPTION

In the CCOT air conditioning system, the pressure cycling switch (47) informs the control assembly microprocessor (15) of the direct operating condition (cycling) of the compressor. When the refrigeration system becomes low on freon, the on/off frequency of the pressure cycling switch (47) increases. If compressor "On" time becomes too short for ten consecutive cycles, the microprocessor (15) will shut the compressor off until the system is recharged or repaired and the battery is reset.