IHKA Climate Control System (E39): Diagnosis
The DIS tester and E39 software are used to troubleshoot and diagnose the IHKA system. The following displays and test programs are available, once the tester is connected and the diagnostic program is accessed:
- Testing based on a fault symptom
- Readout and testing based on the status list displays
- Simulation of outputs
- Readout and display of stored faults
- Testing/troubleshooting based on fault displays
- Canceling of the fault memory
Replacement values are stored in the control module that will allow the IHKA system to continue to function when various sensors fail. Output faults result in the switching off of the failed output.
The fault memory is contained in a non-volatile RAM so that any stored faults will not be canceled when the system is switched off or the battery is disconnected. A maximum of six faults can be stored in the fault memory.