Refrigerant Circuit - Viessmann VITOTRONIC 200 Service Instructions Manual

Troubleshooting
Message overview

07 Refrigerant circuit

Additional code
Last message in message histo-
ry, refrigerant circuit
09 Electricity meter PV
Utilisation of PV power generated on site not possible.
Additional Fault on connected electricity meter
code
Phase 1
"01"
"02"
"03"
"04"
"05"
"06"
"07"
0E Ventilation unit
"Standard operation" is switched on or ventilation
unit switches off, depending on the cause of the fault.
Additional code
Last message in message histo-
ry, ventilation
0F Ventilation unit
Additional code
Last message in message histo-
ry, ventilation
10 Outside temp. sensor
An outside temperature value of
culate the set flow temperature.
Cause
Short circuit, outside temperature sensor
78
(cont.)
Cause
Message from refrigerant circuit con-
troller, heat pump stage 1
Phase 2
X
X
X X
X
X
X X
Cause
Short circuit/lead break temperature
■
sensors, ventilation unit
CO signal capture disrupted
■
2
Communication with ventilation unit
■
disrupted
Cause
Message from ventilation controller of
the ventilation unit
40 °C is used to cal-
–
Action
Observe "Diagnosis"
circuit"
Action
Phase 3
Have electricity meter checked by an electri-
cal engineer.
X
X
X
X
Action
Observe "Diagnosis"
"Message history".
Action
Observe "Diagnosis"
"Message history".
Action
Check resistance value (NTC 10 k
"Controller and sensor PCB".
"Refrigerant
"Message history".
"Ventilation"
"Ventilation"
) at plug F0: See
Ω