Viessmann Vitotwin 300-W - Input;Output Test

114
Function Code Oper-
ating
level
Setting/function
"Relay
test"
7700 "F2" "No test"
"Everything off"
"Relay output QX1" (central fault message facili-
ty)
"Relay output QX2"
"Relay output QX3" (diverter valve)
"Relay output QX4"
"Relay output QX21" mixer extension 1
"Relay output QX22" mixer extension 1
"Relay output QX23" mixer extension 1
"Relay output QX21" mixer extension 2
"Relay output QX22" mixer extension 2
"Relay output QX23" mixer extension 2
"Relay output QX21" mixer extension 3
"Relay output QX22" mixer extension 3
"Relay output QX23" mixer extension 3
Input/output test
The displayed value shows a captured
temperature or a switching state, for
example. If "- - -" is displayed, either
there is no component connected or the
connection is faulty.
Operating level "F2".
Function Code From/
switching
state
To/switching
state
Unit
"Outside temp B9" 7730 - 50.0 50.0 °C
"Boiler temp B2" 7760 0.0 140.0 °C
"Boiler temp B20" 7761 0.0 140.0 °C
"Head control temp B24" 7764 0.0 700.0 °C
"Head limit temp B25" 7765 0.0 700.0 °C
"Return temp B7" 7769 0.0 140.0 °C
"Sensor temp BX3" (B3) 7822 0.0 200.0 °C
"Sensor temp BX4" (B4) 7823 0.0 200.0 °C
"Sensor temp BX5" (B41) 7824 0.0 200.0 °C
Service scans
Relay test
(cont.)
5618 294 GB