1
Download Viessmann WS3A Operating instructions
Transcript
Troubleshooting Fault codes (cont.) Const. Fault code in the display CF Weath.- System charcomp. acteristics Cause Remedy X Control mode Replace the LON communication module dA X Control mode without room influence db X Control mode without room influence dd X Control mode without room influence Communication fault LON communication module Room temperature sensor, heating circuit A1 shorted out Room temperature sensor, heating circuit M2 shorted out Room temperature sensor, heating circuit A1 lead broken dE X Control mode without room influence X X Burner blocked E5 X X Burner blocked Check the room temperature sensor – heating circuit M2 Check the room temperature sensor, heating circuit A1 and the remote control DIP switch setting (see page 105) Check the room Room temtemperature senperature sensor, heat- sor, heating circuit M2 and the ing circuit M2 lead bro- remote control DIP switch setting ken (see page 105) Fault – sup- Replace control unit ply voltage 24 V Flame ampli- Replace the confier fault trol unit. 5692 619 GB E4 Check the room temperature sensor – heating circuit A1 76
