Viessmann VITOCAL 300-G Installation And Service Instructions Manual page 153

Diagnosis (service scans)
E
DHW
50 DHW temperature, top
45 Set DHW temperature
Circulation pump for cylinder
heating
DHW circ pump
F
Heating water buffer cylinder
45 Heating water buffer cylinder
temperature
33 Set temperature, heating water
buffer cylinder
44 System flow temperature
System flow
Swimming pool
Swimming pool circuit pump
G
1 Heating circuit A1 (without
mixer)
21 Room temperature
21 Set room temperature
38 Set heating circuit flow tempera-
ture
Heating circuit pump
H
2 Heating circuit with mixer M2
22 Room temperature
22 Set room temperature
32 Heating circuit flow temperature
38 Set heating circuit flow tempera-
ture
Heating circuit pump
Mixer
(cont.)
K
3 Heating circuit with mixer M3
23 Room temperature
23 Set room temperature
33 Heating circuit flow temperature
38 Set heating circuit flow tempera-
ture
Heating circuit pump
Mixer
L
Separate cooling circuit
20 Room temperature
18 Set room temperature
15 Flow temperature, separate cool-
ing circuit
10 Flow temperature, separate cool-
ing circuit, set value
"Cooling circuit pump": NC sig-
nal
Mixer
Troubleshooting
153