Viessmann Vitoligno 300-H Installation And Service Instructions For Contractors page 114

Diagnosis and service checks
Checking the outputs (actuators)
"Boiler valve Open"
■
■ "Boiler valve Close"
■ "Ash removal On"
■ "Grate On"
■ "Grate Rev" (reverse the rotational direction)
"Cleaning On"
■
Note
After replacing a mixer motor: Check the rotational
direction!
"Charging"
"Feed screw conveyor On"
■
"Screw conveyor On"
■
■ "Vacuum module On "
■ "Discharge On"
■ "Changeover unit RR On" (clockwise)
■ "Changeover unit LR Rev" (anti-clockwise)
"Ext. charging On"
■
"Flue gas filter"
■ "Cleaning"
■ "Flue gas filter door"
■ "Voltage"
"Additional boiler"
"Additional boiler On"
■
"Heating circuit 1"
■ "Pump On"
■ "Valve Open"
■ "Valve Close"
Calling up the "Actuator test" menu
The actuator test can only be carried out when the
boiler is "turned off" (START/STOP button is not illumi-
nated).
Outputs (actuators) can be switched in the "Service"
menu under "Actuator test".
Note
Each term on the display is followed by the action of
the corresponding actuator, which will be carried out. If
no action or the wrong action appears, check the cor-
responding electrical connection.
Automatic overfill protection is disabled during the
actuator tests.
1. simultaneously for approx. 4 seconds.
d +
å
The "Service" menu appears.
2. / for "Actuator test".
| ~
114
(cont.)
"Heating circuit 2"
■ "Pump On"
■ "Valve Open"
■ "Valve Close"
"Heating circuit 3"
"Pump On"
■
"Valve Open"
■
■ "Valve Close"
"Heating circuit 4"
■ "Pump On"
"Valve Open"
■
"Valve Close"
■
"DHW"
■ "Pump On"
■ "Valve Open"
"Valve Close"
■
"DHW circulation" (on the boiler, HKK PCB)
■ "Pump On"
"Solar" (on the boiler, HKK PCB)
■ "Pump On"
"Valve Open"
■
"Valve Close"
■
3.
d
4. /
| ~
5.
d
6. /
| ~
7.
d
8.
d
9.
ä
to confirm.
for the required group of outputs (actua-
tors).
to confirm.
for the required output (actuator).
to activate.
Note
The speed of some actuators can be
changed by pressing | / ~ .
to terminate.
until the default display is shown.