12-30
CONTROL SYSTEM
SM CKDDCI 2-A.3 GB
12.7.4.4 OFAN Test procedure
Start the operation by navigating the HMI.
1.
Both OFANs will start operation.
2.
After about 30 sec the fans will be shut off.
3.
If any of the OFANs are not operating, check the OFANs and the Main board.
4.
Replace if faulty.
12.7.4.5 EEV Test procedure
Start the operation by navigating the HMI.
1.
Listen to EEV motor “clicks” to assure operation.
2.
Replace if faulty.
3.
12.7.4.6 Compressor Test procedure
Start the operation by navigating the HMI.
1.
A/C will start operate.
2.
Listen to compressor motor to assure operation. Use Pressures, Temperatures and current
3.
measurements to assure the operation.
After about 30 sec the A/C will be shut off.
4.
If compressor is not operating, check both Driver and compressor and replace if faulty.
5.
12.7.4.7 RV Test procedure
Start the operation by navigating the HMI.
1.
Listen to RV “clicks” (2 cycles) to assure operation.
2.
Replace if faulty.
3.
12.7.4.8 HGBP Test procedure
Start the operation by navigating the HMI.
1.
Listen to HGBP “clicks” (2 cycles) to assure operation.
2.
Replace if faulty.
3.
12.7.4.9 Temperature Sensors Test procedure
Start the operation by navigating the HMI.
1.
A/C is not operating at this test, only thermistor measurements are taken.
2.
If one of the measurements is not as specified, it is declared as faulty.
3.
The display will show the faulty thermistor name following by “FLT” display:
4.
,
, etc.
This message should be displayed blinking for 30 sec
Replace the faulty sensor.
5.
6.
Note
– the fault is NOT send to diagnostics as “Short” or “Disconnected”
