Viessmann Vitocrossal 300 CA3 2.5 Installation And Service Instructions Manual page 6

Table of Contents
Service
(continued)
Function Description
Coding Levels
Coding Level 1
Coding Level 2
Service Scans
Troubleshooting
6
Vitocrossal 300 CA3 Series 2.5 to 6.0 Installation/Service
Further Assembly and Commissioning .......................117
Checking for Flue Gas Leakage .............................. 117
Automatic Leakage Test for Valves of the Combined
Gas Valve ............................................................. 117
Checking On-site Gas Connections for Leakage ..........118
Taking Final Measurement Reading ..........................118
Checking the Water Conditions ...............................118
Checking Expansion Tank and System Pressure ........ 121
Mixing Valve Movement and Leak Check ...................121
Checking Air Intake in the Installation Room
(visual check) ........................................................ 122
Replacing the Supply Air (for room air dependant
operation) ........................................................................ 122
Instructing the Operator of the System .....................122
Operating and Service Documents ............................ 122
Boiler Water Temperature Control ...........................123
Cascade Control Unit .............................................. 123
Heating Circuit Control ............................................ 128
DHW Tank Temperature Control ............................... 132
Calling up Coding Levels ..................................... 135
Resetting Coding to their Factory Set Condition .........135
"General" Group ..................................................... 136
"Combustion Controller" Group ................................ 138
"Boiler" Group ....................................................... 138
"Cascade" Group ..................................................139
"DHW" Group ........................................................ 141
"Solar" Group .................................................. 142
"Heating Circuit..." Group....................................... 143
"General" Group ..................................................... 147
"Combustion Controller" Group ................................ 155
"Boiler" Group ....................................................... 156
"Cascade" Group ..................................................156
"DHW" Group ........................................................ 159
"Solar" Group .................................................. 161
"Heating Circuit..." Group....................................... 165
Calling up the Service Menu ...................................171
Leaving the Service Menu .......................................172
Change Passwords .................................................172
Resetting all Passwords to Factory Settings .............172
Scanning Operating Data ........................................ 172
Resetting Operating Data .......................................173
Brief Scan ............................................................. 173
Carrying Out an Actuator Test ................................ 174
Checking Sensors ................................................... 175
Maintenance Display ............................................... 175
Fault Display .......................................................... 176
Boiler System Fault Codes ........................................ 177
Burner Fault Codes ................................................183
Sensors ...............................................................186
Page