Electra WNG 50 DCI Service Manual page 61

12.3.2.3 'No Communication' fault
If no legal transmission or no message received for 30 seconds, system enters 'No
Communication' fault.
•
If there is no communication, the following will be performed:
1. The unit changes to STBY.
2. The system will scan all the communication channels.
3. Each channel that is identified as 'no communication' channel will be referred as
STBY unit.
4. The unit resumes its normal operation with only the operative channels.
12.3.3 Temperature Measurements
12.3.3.1 Thermistor failures definition
Thermistor
OCT
OAT
CTT
OMT
HST
12.3.3.2 System responses for different thermistor failure
Thermistor
OCT
OAT
CTT
OMT
HST
ICT
12.3.4 Flash Memory Programming
In order to upgrade the ODU software, will be used. A special application
For upgraiding new software via a PC, the auxiliary port on the outdoor controller can be
used by running a special firmware.
Service Manual - WNG 50_60_80 DCI
Thermistor is Disconnected
Temp < -40 °C
Temp < -40 °C
Temp < -30 °C
Temp < -40 °C
Temp < -30 °C
Default value
6°C
Cool 35°C
Heat 7°C
43°C Forced compressor to OFF after 20 minutes.
43°C
43°C
43°C
Revision Y05-02
CONTENT
CONTROL SYSTEM
Thermistor is Shorted
Temp > 75 °C
Temp > 75 °C
Temp > 130 °C
Temp > 75 °C
Temp > 130 °C
System Reaction
12-5