Case CX160C Excavator Repair Manual

Model: Case CX160C Tire 4
Manuals: Service Manual
Introduction
Engine
Hydraulics System
Frames and Ballasting
Tracks and Track Suspension
Cab Climate Control
Electrical System
Booms, dippers and buckets
Dozer Blade and Arm
Platform, cab, bodywork and decals
Special Tools Index
Hydraulic Schematics
Electrical Schematics
Manual Extract: Air conditioning – Overview
Explanation of control
Backup function

Even when air-conditioner operation is stopped with the vehicle main key power supply or operation panel ON/OFF switch, the set temperature and all the other setting states are stored in memory, so the next time air-conditioner operation starts, it goes into the same state as before it was stopped.

When the vehicle main key power supply is cut-off, the data is backed up by storing it in the internal EEPROM.
However, if the main key power supply is cut-off within 0.5 s. of switch input, that switch input is not stored into memory.

Also, the data read out from EEPROM when the power is switched ON is judged to see if it is within the valid range. If data outside the valid range was written into memory, for example due to noise, then operation starts from the default setting values to avoid abnormal operation.