Viessmann Vitoligno 300-C Installation And Service Instructions Manual page 5

Index
6. Diagnosis and service
checks
7. Troubleshooting
8. Maintenance
Hardware ............................................................................................ 78
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General ............................................................................................... 81
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Boiler .................................................................................................. 81
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Charging ............................................................................................. 82
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Buffer (heating water buffer cylinder) .................................................. 84
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Additional heat generator ................................................................... 84
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Heating ............................................................................................... 86
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DHW (DHW heater) ............................................................................ 89
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Solar ................................................................................................... 89
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Code 2 ................................................................................................... 91
Calling up code 2 ................................................................................ 91
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Overview of coding level 2 .................................................................. 91
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General ............................................................................................... 91
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Boiler .................................................................................................. 92
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Charging ............................................................................................. 94
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Buffer (heating water buffer cylinder) .................................................. 95
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Heating ............................................................................................... 95
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DHW (DHW heater) ............................................................................ 97
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Controllers .......................................................................................... 97
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Service functions ................................................................................... 98
Calling up the service menu ............................................................... 98
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Exiting the service menu .................................................................... 99
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Checking operating states, actuators and sensors ................................ 99
Calling up the "Information" menu ...................................................... 99
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Calling up the "Diagnosis" menu ........................................................ 99
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Checking the outputs (actuators) ........................................................... 99
The following actuators can be switched "manually" .......................... 100
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Calling up the "Actuator test" menu .................................................... 100
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Filling the vacuum module ..................................................................... 101
Calls up the "Fill vacuum module" menu ............................................ 101
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Running the pellet hopper until empty ................................................... 101
Calling up the "Run pellet hopper until empty" menu ......................... 101
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Checking the changeover unit ............................................................... 102
Calling up the "Changeover unit" menu ..............................................102
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Icons and text in the menu ................................................................. 102
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Manual operation of changeover unit ................................................. 102
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Loading the standard setting ................................................................. 103
Calling up the "Standard setting" menu .............................................. 103
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Fault indicator ........................................................................................ 104
Checking and acknowledging faults ................................................... 104
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Calling up acknowledged fault messages .......................................... 104
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Calling up fault codes from the fault memory (fault history) ............... 104
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Deleting saved fault codes from the fault memory ............................. 104
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Fault displays in plain text ......................................................................105
Fault codes ............................................................................................ 105
Fuses ..................................................................................................... 112
Appliance fuse protection (to EN 60127-5) ......................................... 112
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Checking the fuses ............................................................................. 112
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Battery ................................................................................................... 112
High limit safety cut-out ......................................................................... 112
Triggering the function ........................................................................ 112
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Cancelling the function ....................................................................... 113
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Sensors ..................................................................................................113
Connection ......................................................................................... 113
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Check sensors .................................................................................... 114
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Lambda probe ........................................................................................114
Checking the Lambda probe .............................................................. 114
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Index
5