Checking communication

Check whether the communication is working. Read off the control module P/N in the VIDA communication input for example.

Check if the fault is limited to the Combustion Preheater Module (CPM) or if several nodes have communication problems. If the problem is limited to contact with the auxiliary heater, the fault has been located.

If the communication works and the P/N can be read off, the fault is intermittent.

Remedy as necessary.

Other information: 

• If there are also communication problems with other control modules, check according to the appropriate service information.

• Continue 

  Refer to Checking communication, continued