Viessmann Vitocal 350-A Installation And Service Instructions Manual page 152

Troubleshooting
Control unit diagnostics
Diagnosis overview
Diag. HP module
[ - ] : 0100 4000 0101
Tsh, Tc [ °C ] :
pmop [ bara ] :
Ts, Tc [ °C ] :
ps, pc [ bara ] :
T1 [ °C ] :
x, P [ % ] :
00 : 00000001
Err [ - ] :
2 T/P
Displays
Display Explanation
I [–] Information index (commands, status, versions):
12 digits, 4 different codes possible at each position, hexadecimal dis-
play; observe the subsequent display system
Tsh, Tc [°C] Tsh: Set superheating temperature
Tc: Set hot gas temperature for start of the vapour injection (EVI)
Pmop Max. suction gas pressure ("maximum operating pressure")
[bara] Max. evaporator operating pressure
Ts, Tc [°C] Ts: Actual suction gas temperature
Tc: Actual condensation temperature
Ps [bara] Actual suction gas pressure
Pc [bara] Actual condensation pressure
TI [°C] Actual LPG temperature
x, P [%] x: Last EEV position
P: Most recent set value default for the compressor output, calculated
by heat pump control unit from current heat demand in the secondary
circuit
Err [–] Fault index (component, message):
10 digits, 4 different codes possible at each position, hexadecimal dis-
play; observe the subsequent display system
152
(cont.)
1
3.0, 68.0
6.6
19.8, 63.9
6.2, 14.1
28.8
100 , - - -
H BACK
Note
■ The information displayed in "Diag.
HP module" is independent of the
fault codes in the heat pump control
unit.
■ The diagnosis of compressor stage 1
or 2 is called up with "1" or "2". The
diagnosis for compressor stage 2 has
no function.