Viessmann Vitocal 300-G Installation And Service Instructions Manual page 132

Troubleshooting
Control unit diagnostics
The information line (second line from
the top of the display) contains the fol-
lowing details:
0000 0000 0000
The last 4 digits designate the ver-
sion of the hardware and software
of the heat pump module.
Terms and values of the display details:
Err/Msg "Error Message" = Error
message
Tsh, Tc Set temperature superheat-
ing/set condensation tem-
perature [°C]
Pmop Max. operating pressure [bar
absolute]
Ts, Tc Actual suction gas tempera-
ture/actual condensation
temperature [°C]
The lower display line contains a left hand and right hand group of figures:
Temperatures and pressures
Key "ÓT/P" enables the diagnosis page "Temperatures and pressures" to be
called up.
Temperatures and pressures are
displayed as initially captured
values during the last compressor
operation.
These values are saved when the
appliance is shut down. They are
only overwritten when the compres-
sor starts again.
132
(cont.)
Ps Actual suction pressure [bar
absolute]
Pc Actual condensation pres-
sure [bar absolute]
Tl Actual liquid gas tempera-
ture [°C]
x Set valve position [%]
P "
Err Fault/Error (with the asso-
ciated information)
Values for temperatures and pres-
sures:
tpe Primary input heat pump 1
tpa Primary output heat pump 1
tse Secondary return heat pump 1
and 2
tsa Secondary flow for heat pump 1
p0 Evaporation pressure heat
pump 1 and 2
pc Condensation pressure heat
pump 1 and 2
"