Viessmann VITOTRONIC 200 Service Instructions Manual page 144

Diagnosis
Refrigerant circuit
A
Refrigerant circuit
25.8°
R 100%
tc:47.9°
Q
25.1°
Back with
P
Fig. 30
Pos. Meaning
Secondary circuit flow temperature in °C
A
Hot gas temperature in °C
B
Condensing pressure in bar(a)
C
Vitocal 333-G only:
D
Compressor output in %
Compressor
Animated symbol: Compressor is running.
Suction gas temperature in °C
E
F Suction gas pressure in bar(a)
Value underlined: Pressure control of suction gas is active.
R410A Refrigerant
Primary circuit flow temperature in °C
G
Primary pump
Animated symbol: Primary pump is running.
Primary pump speed in %
H
"t0:" Evaporation temperature in °C
K
Primary circuit return temperature in °C
L
Suction gas superheating in K
M
Value highlighted white: Set suction gas superheating in K
Value underlined: Suction gas superheating control active
Electronic expansion valve:
Refrigerant circuit in heating mode, heat generation at condenser
Electronic expansion valve opening in %
N
LPG temperature in °C
O
Secondary circuit return temperature in °C
P
"tc:" Condensing temperature in °C
Q
R Secondary pump speed in %
Secondary pump, cylinder loading pump
Animated symbol: Pump is running.
144
(cont.)
B C D
83.2°
56%
29.2bara
5.0K
9.1K
21.9° 25%
O N M
E F G
R410A
10.2°
8.3bara
8.2°
86% H
tO:20.5°
K
1.6°
L